HME System 500 User manual

HME# 400524
Rev— 8/4/03
System 500
Wireless Drive-Thru Audio System
Operating Instructions

Table of Contents
I. GENERAL.........................................................................................................................1
II. EQUIPMENT FUNCTIONS AND USE .........................................................................1
A. Base Station.....................................................................................................................................2
B. Headset .....................................................................................................................................4
C. Battery Charger................................................................................................................................7
III. SYSTEM 500 OPERATION ............................................................................................8
A. Single-Lane Operation.....................................................................................................................8
B. Dual-Lane Operation .......................................................................................................................9
C. Speed-Team Operation....................................................................................................................9
D. Message Repeater Operation .........................................................................................................10
IV. EQUIPMENT CARE AND CLEANING......................................................................11
A. Proper Handling.............................................................................................................................11
B. Cleaning ...................................................................................................................................11
V. IN CASE OF PROBLEMS.............................................................................................12
VI. SPECIFICATIONS.........................................................................................................16
VII. OPTIONAL EQUIPMENT............................................................................................17
VIII. FCC NOTICE..................................................................................................................17
List of Figures
Figure Title Page
1 System 500 equipment............................................................................................................1
2 Base station exterior................................................................................................................2
3 Headset features and controls..................................................................................................4
4 Correct wearing of headset......................................................................................................5
5 Battery removal.......................................................................................................................6
6 Battery replacement ................................................................................................................6
7 Battery charger........................................................................................................................7
8 Base station circuit boards ....................................................................................................14
The HME logo and the word COMMUNICATOR®are registered trademarks of HM Electronics, Inc.
© Copyright HM Electronics, Inc. - August 2003

1
I. GENERAL
The System 500 is a wireless audio system primarily for use at quick-service restaurants.
II. EQUIPMENT FUNCTIONS AND USE
Figure 1. System 500 equipment
HS500, Version 2 or higher, provides basic operating cues in Spanish and French,
as follows. Refer to the Language Selection instructions on page 6.
Español
HS500, versión 2 o mayor, proporciona las señales de funcionamiento
fundamentales siguientes en español: Sistema activado, Sistema desactivado,
Batería baja, Línea uno, Línea dos y Frecuencia ocupada.
Français
HS500, la version 2 ou plus, fournit les sélections de fonctionnement fondamentales
suivantes en français: Fonction active, Fonction inactive, Pile basse, Voie un,
Voie deux et Fréquence occupée.

2
A. Base Station
The base station is the electronic heart of the System 500. It contains the circuitry
through which all functions of the drive-thru audio system are channeled.
External base station features are shown in Figure 2, and described on page 3. Its
internal features are shown in Figure 8, and the base station circuit board switches and
adjustments are listed on page 15.
Figure 2. Base station exterior

3
Base Station External Features
Front —
• POWER light is on when the base station has power.
• MESSAGE RECORD light is on RED when the base station is ready to record
message #1 for the message repeater, and blinking RED while message #1 is
being recorded. It is on GREEN when the base station is ready to record
message #2 for the message repeater, and blinking GREEN while message #2
is being recorded. The MESSAGE REPEATER button must be pushed IN.
• RECEIVE light is on during channel-A and channel-B transmissions, and is
used for troubleshooting.
• “A” light is on during channel-A transmission.
• “B” light is on during channel-B transmission.
• VEHICLE light is on when a vehicle is present in the drive-thru lane or when the
system is in vehicle-detect override.
Bottom —
• PUSH FOR RECORD MODE button must be pushed IN and released once to
prepare the base station to record message #1 for the message repeater, or
pushed IN and released twice to record message #2.
• MESSAGE REPEATER button must be pushed IN to use the message
repeater, OUT when the message repeater is not being used.
• SPEED TEAM button must be pushed IN for speed-team operation, OUT for
normal drive-thru operation.
• VEHICLE DETECTOR button must be pushed and left IN to override a vehicle
detector; to reset vehicle detector, push IN and leave IN for 5 seconds, then
push again and leave OUT for normal vehicle detection.
Left Side —
• WIRED/WIRELESS button must be OUT when using the wireless System 500,
IN when using a wired backup system.

4
B. Headset
1. Features and Controls
Figure 3. Headset features and controls
2. How to Wear the Headset
• Wear the microphone on your right or left side.
• Wear the battery end of the headset above your
ear, on the side of your head opposite the earpiece.
• Adjust the headband for a comfortable fit.
• To adjust the microphone position, hold the microphone
boom at its base (See Figure 3) and pivot the boom up
or down until the microphone is at the side of your mouth
as shown in Figure 4.
Figure 4.
Correct wearing
of headset

5
3. How to Use the Headset
The headset control buttons are touch-sensitive. They will activate when only
slightly touched. Use your fingertips, not your fingernails, to touch the buttons.
a. Power On/Off
Power Light
• The headset power light is red for lane 1, green for lane 2.
• The headset power light blinks while the headset is transmitting your voice.
• The headset power light is ON steady when the headset is not transmitting.
Power On
• Press and release the power ON/OFF button to turn the headset on.
• A voice message in the headset says “Power on, lane one (or two)” in the
selected language.
• The headset power light blinks green, then goes on steady red (lane 1)
or green (lane 2).
Power Off
• Press and hold the power ON/OFF button 2 seconds.
• A voice message in the headset earpiece says “Power off” in the
selected language.
• The headset power light goes off.
b. Volume Up/Down
Single-Step Volume Adjustment
• Lightly touch and release the Volume-up or Volume-down button.
• A beep sounds in the headset earpiece each time the button is pressed.
• As the volume increases, one step at a time, the pitch of the beep increases.
As the volume decreases, one step at a time, the pitch of the beep decreases.
• When the same high or low pitch repeats each time you touch a Volume-up
or down button, you have reached the maximum or minimum volume level.
Continuous Volume Adjustment
• Lightly touch and hold the Volume-up or Volume-down button.
• The volume increases or decreases continuously while the button is held.
• A series of beeps, of increasing or decreasing pitch, sound in the headset
earpiece until the volume reaches maximum or minimum.
4. Headset Operating-Mode Settings
Most stores have systems with Hands-Free capability. If you are uncertain whether or not
your System 500 has Hands-Free capability, do the following test. ⎯When a car is at the
speaker post (or menu board), touch and hold the appropriate Abutton. If you can hear the
sound of the car or the customer with the Abutton held, you have Hands-Free capability.
a. Auto-Hands-Free Setting
The auto-hands-free (AHF) feature allows one operator to communicate with a
customer in one drive-thru lane without pressing any buttons. Other operators can
listen. If the first operator turns the AHF feature off, another operator can turn it on.
CAUTION: Only one HS500 per lane can be set in the auto-hands-free mode,
or interference will occur when a customer enters the drive-thru lane.

6
• Turn the headset power on and release the power button. After hearing the status
message, press and hold the Power button and touch the Volume-down button
– You will hear “Auto-hands-free on” or “Auto-hands-free off”
NOTE: You must touch the Volume-down button within 2 seconds after pressing
the Power button, or you will turn the power off and have to begin again. If the
auto-hands-free feature does not come on, you may need to reconfigure the S1
switch in the base station. Call HME Customer Support at 1-800-848-4468 for help.
• The last Auto-hands-free on/off message heard will remain in effect until you
change it again or turn the headset power off.
b. Configuration Settings
• Turn the headset power on and release the power button. After hearing the status
message, press and hold the Power button and press the Bbutton. NOTE: You
must press the Bbutton within 2 seconds after pressing the power button, or you
will turn the power off and have to begin again.
• You will hear “Configuration” in the headset.
• Select the desired configuration setting described below.
• When finished, press and release the Bbutton to exit the configuration-settings
mode. You will hear “Power on, lane (one or two)” in the headset, in the
selected language.
• Configuration settings will remain in effect until you change them again.
Hands-free On/Off Configuration
• Touch and release the Volume-down button – you will hear “Hands-free on.”
• Touch and release the Volume-down button again – you will hear “Hands-free off.”
• You will continue to hear “Hands-free on” or “Hands-free off ” messages
alternating each time you touch and release the Volume-down button.
• The last Hands-free on/off message heard will be selected when you exit the
configuration-settings mode by pressing the Bbutton.
Single/Dual Lane Configuration
• Touch and release the A1 button – you will hear “Single lane.”
• Touch and release the A1 button again – you will hear “Dual lane.”
• You will continue to hear “Single lane” or “Dual lane” messages alternating each
time you touch and release the A1 button.
• The last Single/Dual lane message heard will be selected when you exit the
configuration-settings mode by pressing the Bbutton.
Language Selection
• Touch and release Volume-up button – you will hear “English.”
• Touch and release Volume-up button again – you will hear “Español.”
• Touch and release Volume-up button again – you will hear “Français.”
• You will continue to hear “English,” “Español” and “Français” each time you
touch and release the Volume-up button.
• The last language message heard will be selected when you exit the
configuration settings mode by pressing the Bbutton.
Operating Channel Configuration
• CAUTION: If you touch the A2 button you may change the headset
operating channel, in which case you will hear “Channel __.” If this
happens, do not touch any other headset buttons until you hear a second
“Channel __” message (approximately 15 seconds), indicating the headset
has reverted to its previous channel setting. If you do not hear the
second message, call HME Customer Support at 1-800-848-4468.

7
5. Battery Removal and Replacement
If you hear “Battery Low” in the headset, in the selected language, its battery needs to
be replaced and recharged. HS500 batteries need be recharged after 12-13 hours of
normal use.
a. Battery Removal
• Slide the battery-release latch
upward.
• Pull the battery out from the top.
b. Battery Replacement
• Place the end of a battery into
the battery compartment, with
its metal contacts downward.
• Press the top of a battery into the battery
compartment until it snaps in place
under the battery-release latch.
C. Battery Charger
Up to four headset batteries can be charged in the charger at the same time. Charging
time is approximately 2 hours. The battery status lights next to each charging port are
explained below. Up to six fully charged batteries can be kept in the battery storage ports.
• Insert a battery in one of four charging ports until it clicks in place.
• The yellow light next to a charging port stays on while it is empty. When a battery is in a
charging port, a yellow light flashing next to it indicates CHARGE PENDING, which means
the temperature where the charger is located is out of the battery’s operating range (32o-
104oF, 0o-40oC). Adjust the room temperature or move the charger to a cooler area.
When battery is in a port, a yellow light on steady next to it indicates CHARGE FAILED.
Follow the diagnostic instructions on the side of the battery charger.
• The red CHARGING light next to a charging port stays on while a battery in it is charging.
CAUTION: Do not remove batteries from the charger until the green READY light is
lit, or the charger will reset and the charge cycle will begin again.
• The green READY light next to a charging port goes on when a battery in it is fully charged.
NOTE: Batteries left in a charging port for an extended period of time (over a week
without being removed) may result in a yellow error light next to the port while the battery
is still there. In this situation, the battery is not faulty. It can be used in the headset and
recharged as normal.
• Remove the fully charged battery from its charging port and place it in a storage port.
Figure 6.
Batter
y
re
p
lacement
Figure 5.
Batter
y
removal
Battery
release
latch
Figure 7. Battery Charger
Battery in
storage port
Battery in
charging port
Label on
battery charger

8
III. SYSTEM 500 OPERATION
The headset can be operated in Hands-Free, Auto-Hands-Free or Hands-Free-Off modes.
If your store does not have Hands-Free capability, you should operate the System 500
according to section A.3. below in single-lane stores, or B.3. (page 9) in dual-lane stores.
If you are uncertain if your store has hands-free capability, refer to section 4 on page 6.
In the Auto-Hands-Free mode, transmission and reception are activated automatically when a
customer drives into the drive-thru lane. In the Hands-Free mode, transmission is activated
by touching and releasing one of the Abuttons on the headset. In the Hands-Free-Off mode,
you must touch and hold one of the Abuttons on the headset while speaking to the customer.
When a customer arrives in the drive-thru lane, you will hear a single beep in the headset
for single lanes and for Lane 1 in dual-lane operations, or a double beep for Lane 2. In
dual-lane operation, if you are communicating with a customer when another customer
arrives in the opposite lane, a higher pitch double beep will sound in the headset to alert
you of the second customer’s presence. When the first customer leaves the speaker post,
the same higher pitch double beep will repeat in your headset every 4 seconds until you
touch the A1 or A2 button to communicate with the second customer.
A. Single-Lane Operation (one base station for one speaker post)
1. Hands-Free (HF) Mode:
!Alert tone (single beep) sounds in headset, then customer at speaker post or menu board can be
heard.
!Adjust customer’s voice level in headset if necessary.
!Touch and release A1 or A2 button to speak and listen to customer.
!Touch and release A1, A2 or Bbutton to end communication with customer. You will hear a
single beep in your headset.
!Touch and release A1 or A2 button if you want to speak to the customer again.
!If customer drives away from speaker post or menu board, headset automatically stops transmitting.
2. Auto Hands-Free (AHF) Mode:
!Alert tone (single beep) sounds in headset, then customer at speaker post or menu board can be
heard.
!Adjust customer’s voice level in headset if necessary.
!Speak and listen to customer without pressing any buttons.
!Touch and release A1, A2 or Bbutton to end communication with customer. You will hear a
single beep in your headset.
!Touch and release A1 or A2 button if you want to speak to the customer again.
!If customer drives away from speaker post or menu board, headset automatically stops transmitting.
3. Hands-Free-Off Mode:
!Alert tone (single beep) sounds in headset, then customer at speaker post or menu board can be
heard.
!Adjust customer’s voice level in headset if necessary.
!Touch and hold A1 or A2 button to speak to customer.
NOTES:
To communicate internally with another HS500 user, press and hold the Bbutton while
talking. Release to listen.
If you press the A1, A2 or Bbutton while someone else is already communicating on
that channel, you will hear “Channel active” in your headset, in the selected language.

9
B. Dual-Lane Operation (two base stations for two speaker posts)
1. Hands-Free (HF) Mode:
!Alert tone (single beep for Lane 1, double beep for Lane 2) sounds in headset, then customer at
speaker post or menu board can be heard.
!Adjust customer’s voice level in headset if necessary.
!Touch and release A1 button for Lane 1 or A2 for Lane 2, to speak and listen to customer.
!Touch and release A1, A2 (depending on lane) or Bbutton to end communication with customer.
You will hear a single beep in your headset.
!Touch and release A1 button for Lane 1 or A2 for Lane 2, to speak to the customer again.
!To change lanes, touch and release the opposite Abutton.
!If customer drives away from speaker post or menu board, headset automatically stops transmitting.
2. Auto Hands-Free (AHF) Mode:
!Alert tone (single beep for Lane 1, double beep for Lane 2) sounds in headset, then customer at
speaker post or menu board can be heard.
!Adjust customer’s voice level in headset if necessary.
!Speak and listen to customer without pressing any buttons.
!Touch and release A1, A2 (depending on lane) or Bbutton to end communication with customer.
You will hear a single beep in your headset.
!Touch and release A1 button for Lane 1 or A2 for Lane 2, to speak to the customer again.
!To change lanes, touch and release the opposite Abutton.
!If customer drives away from speaker post or menu board, headset automatically stops transmitting.
3. Hands-Free-Off Mode:
!Alert tone (single beep for Lane 1, double beep for Lane 2) sounds in headset, then customer at
speaker post or menu board can be heard.
!Adjust customer’s voice level in headset if necessary.
!Touch and hold A1 button to speak to customer in Lane 1; A2 to speak to customer in Lane 2.
NOTES:
To communicate internally with another HS500 user, press and hold the Bbutton while
talking. Release to listen.
If you press the A1, A2 or Bbutton while someone else is already communicating on
that channel, you will hear “Channel active” in your headset, in the selected language.
Pressing the Bbutton will not interrupt same-lane communication, but the Bchannel
communication will be heard at a reduced level by the operator of the other lane.
C. Speed-Team Operation
Speed team operation is used during high-volume times. An order taker wearing an
HS500 headset relays orders from outside into the store, using button Bon the
headset. Placing the speed-team switch, on the bottom of the base station, in the ON
position will disable the outside speaker/microphone and the vehicle-alert tone.

10
D. Message Repeater Operation
1. Record
To record messages for the message repeater, press the MESSAGE REPEATER
button in, on the bottom of the base station, and do the following:
ACTION RESULT
Press and release the RECORD MODE
button on the base station once.
The red MESSAGE RECORD light on
the base station will come on.
Press and hold button Bon the headset
and talk into the headset microphone to
record a message (up to 8 seconds).
The MESSAGE RECORD light on the
base station will begin blinking.
To record
Message #1
Release button B. The record function will stop and the
MESSAGE RECORD light will go off.
Press and release the RECORD MODE
button on the base station twice.
The green MESSAGE RECORD light
on the base station will come on.
Press and hold button Bon the headset
and talk into the headset microphone to
record a message (up to 8 seconds).
The MESSAGE RECORD light on the
base station will begin blinking.
To record
Message #2
Release button B. The record function will stop and the
MESSAGE RECORD light will go off.
2. Playback
Locate the S7 and S8 DIP switches at the bottom-center of the audio circuit board
inside the base station for the following settings. Refer to Figure 8.
Message #1
• S8 switch #7 in the ON position enables Message #1 to be played.
• will be triggered by a vehicle present signal if S7 switch 5 is in the OFF
position. The playing message can be cancelled by pressing button Aon the
headset.
• will be triggered by an alert signal if S7 switch 5 is in the ON position.
• will be played to the locations selected if S7 switches 2, 3 and/or 4 are in the
ON position.
Switch 2 enables Message #1 to be played back in all HS500 headsets.
Switch 3 enables Message #1 to be played back on the outside speaker.
Switch 4 enables Message #1 to be played back on the ceiling speakers.
Message #2
• S8 switch #8 in the ON position enables Message #2 to be played.
• will be triggered by a vehicle present signal if S8 switch 5 is in the OFF
position. The playing message can be cancelled by pressing button Aon the
headset.
• will be triggered by an alert signal if S8 switch 5 is in the ON position.
• will be played to the locations selected if S8 switches 2, 3 and/or 4 are in the
ON position.
Switch 2 enables Message #2 to be played back in all HS500 headsets.
Switch 3 enables Message #2 to be played back on the outside speaker.
Switch 4 enables Message #2 to be played back on the ceiling speakers.
If S8 switches 7 and 8 are both in the ON position, and S7 switch 5 and S8 switch 5
are both set to ON or OFF, Message #1 and Message #2 will be played alternately.
After a new message has been recorded or after the base station has lost and
regained power, any message to the outside speaker will always be heard in
the headset the first three times it plays.

11
IV. EQUIPMENT CARE AND CLEANING
A. Proper Handling
• When adjusting microphone position, hold boom at base, not at microphone end.
• Carry headset by headband, not by earpiece or battery end, and never by
microphone boom.
• Use both hands to put headset on or take it off.
B. Cleaning
1. Headsets
• Remove batteries from headsets.
• Clean batteries and headsets with damp sponge sprayed with household
cleaner. Squeeze excess liquid out of sponge before using it.
• Clean metal contacts on batteries and headsets as follows. Wet tip of swab with
alcohol and squeeze excess alcohol from it. Wipe each contact with swab and
be certain all contacts are dry before reinstalling batteries in headsets.
• Foam muffs on headset earpieces can easily be replaced for sanitary purposes.
To order extra foam muffs, call your local HME sales representative.
2. Battery Charger
Avoid splashing water or grease on the battery charger. Clean the battery charger
monthly as follows.
CAUTION: Always unplug the battery charger before cleaning it.
• Remove all batteries from the battery charger.
• Clean the battery charger case with a damp sponge. Wet the sponge and wring
it out so it is damp, not dripping wet. Spray household cleaner on the sponge
(NOT DIRECTLY ON THE EQUIPMENT). Clean the battery charger with the
sponge and dry it thoroughly.
• Wet the tip of a cotton swab with rubbing alcohol and squeeze the excess
alcohol from the swab. Wipe the metal contacts inside each battery port with
the damp swab. Allow the contacts to dry before placing batteries in the ports.

12
V. IN CASE OF PROBLEMS
PROBLEM PROBABLE CAUSE SOLUTION
Power may be off at base station. Check circuit breaker for building.
Power supply in base station may
not be working.
Check power supply indicator lights
on base station. If no light is lit,
be certain AC power adapter is
plugged into AC electrical outlet
and is connected to J16 on base
station audio circuit board.
Headset power may not be on. Press Power ON/OFF button on
headset. Be certain power light
goes on.
Volume may not be set correctly. Adjust headset volume with Volume-
up and down buttons.
Battery may be low or defective. Check Power light. If not lit, replace
battery.
No sound is heard in
headset when you
press button Aand
speak into
microphone.
Headset may be defective. Use another headset. Call HME. *
Headset power may not be on. Press Power ON/OFF button on
headset. Be certain power light
goes on.
Battery may be low or defective. Check Power light. If not lit, replace
battery.
Channel Aor Blight on base
station does not light when
headset button Aor Bis pressed.
Use another headset. Call HME. *
Headset channel A
or Bis not working.
Frequency settings may be wrong. Call HME. *
Outbound sound is
too low.
Outbound volume may be set too
low for environment.
Turn outside speaker volume
control, R59 on base station audio
circuit board, clockwise until volume
is satisfactory.
System may be set for speed-team
operation.
Be certain SPEED TEAM button on
base station is in out (OFF) position.
There may be loose wires on
outside speaker or base station
circuit board.
Check outside speaker wire
connections in base station and at
outside speaker.
No outbound sound;
Customer cannot
hear anything.
Speaker or base station may be
defective.
Call HME. *
System may be set for speed-team
operation.
Be certain SPEED TEAM button on
base station is in out (OFF) position.
Customer cannot be
heard in push-to-talk
(PTT) operation. Base station may be set for wrong
drive-thru mode (full or half-duplex).
Check S6 DIP switch #1 at bottom of
base station audio circuit board. It
should be ON for full-duplex, OFF
for half-duplex operation.
Base station may not be powered. Check power supply indicator lights
on base station. If no light is lit,
be certain AC power adapter is
plugged into AC electrical outlet
and is connected to J16 on base
station audio circuit board.
Only static can be
heard in headsets.
Circuit board may be defective. Check to see if status lights on base
station are lit. Call HME. *

13
PROBLEM PROBABLE CAUSE SOLUTION
Touch-sensitive
buttons on headset
are stuck on, or do
not work. No click or
tone is heard when
touching an Aor B
or Volume button.
Buttons may be out of calibration. Press and hold headset power
button for 6 seconds, until a buzzing
sound is heard in headset earpiece.
Hold the headset by the headband
and do not touch any buttons for 10
seconds. If the buttons are still not
working properly, call HME. *
Circuit board may be defective. Check to see if status lights on base
station are lit. Call HME. *
Personnel hear
customers in ceiling
speaker or headsets,
but cannot hear
each other.
Headset may be defective. Use another headset. Call HME. *
Power interruption may have
caused vehicle detection circuit to
be out of balance.
When no vehicle is in the drive-thru
lane, press the vehicle detector
override switch on the base station
to the RESET position, then back to
the NORMAL position.
System may be set for speed-team
operation.
Be certain SPEED TEAM button on
base station is in out (OFF) position.
No tone or sound is
heard in ceiling
speaker or headsets
when vehicle enters
drive-thru lane.
Connector may be loose. Check all connectors in base
station. Call HME. *
There may be loose wires on base
station circuit board.
Check all connections on base
station circuit boards.
System may be set for speed-team
operation.
Be certain SPEED TEAM button on
base station is in out (OFF) position.
Personnel cannot
hear customers in
ceiling speaker or
headsets.
Outside speaker or audio circuit
board may have failed.
Call HME. *
Battery may be low. Replace battery.
Headset has
intermittent sound. Headset may be defective. Use another headset. Call HME. *
OVERRIDE/RESET switch on base
station may be in the OVERRIDE
(in) position.
Be certain switch is in the NORMAL
(out) position.
There is still sound in
headset after all
customers have
been served. Vehicle detector may be locked up. Press OVERRIDE/RESET switch
twice.
Battery charger is
not working.
Charger may not be plugged in. Be certain charger is plugged in.
If it still is not working, call HME. *
Message cannot be
recorded.
Message will not
play.
Message repeater may not be
turned on.
Be certain message repeater button
on bottom of base station is in the
ON (in) position.
* For assistance, call HME at 1-800-848-4468, or Fax [phone].
In the event of an electrical power outage –
such as from a lightning storm or power generator failure, if you experience problems
with your HME equipment after the electricity comes on again, unplug the AC power
adapters from their electrical outlets and wait 15 seconds, then plug them back in.
900MHz cordless telephone interference –
If there is a 900MHz cordless telephone nearby, interference may occur. Changing
frequencies on the telephone and/or base station and headset may alleviate the
problem. Call HME Customer Support at 1-800-848-4468 if assistance is required.

14
Figure 8. Base station circuit boards

15
Base Station Circuit Board Adjustments
1. Wired backup system switch — S2
2. DM2 select switch — S1
3. Record message switch — S1
4. Message repeater ON/OFF switch — S2
5. Speed team switch — S3
6. Vehicle detector override switch — S4
7. Channel selector — S3
8. System status switch — S2
9. System configuration switch — S1
10. Squelch adjustment — R90
11. “A” sidetone level — R56
12. “B” sidetone level — R70
13. Ceiling speaker “A” channel volume control — R112
14. Ceiling speaker vehicle present tone volume control — R83
15. Ceiling speaker inbound volume control — R84
16. Outside speaker volume control — R59
17. Line out level adjustment — R260
18. VAA level adjustment — R146
19. Outside speaker message volume control — R113
20. Transmit message volume control — R149
21. Ceiling speaker message volume control — R114
22. Inbound audio level adjustment — R74
23. VAA attenuation level adjustment — R55
24. Ceiling speaker “B” dual volume control — R1
25. Line in level adjustment — R20
26. Deviation adjustment — R29
27. “B” dual audio level adjustment — R57
28. Ceiling speaker “B” volume control — R58
29. Vehicle present tone level adjustment — R110
30. System configuration switches — S5, S6, S7, S8, S9

16
VI. SPECIFICATIONS
Base Station
Voltage input 16VAC ±2.5V
AC current input 2.5A maximum
Audio distortion 5% maximum level
Outside speaker output 3 watts RMS into 8 ohms
Ceiling speaker power 3 watts RMS into 8 ohms
Controls/Switches 2-position vehicle detector switch (Normal — Override/Reset)
2-position “Speed Team” ON/OFF switch
2-position “Message Repeater” ON/OFF switch
1-position “Record” switch
4-position VAA and noise reduction DIP switch
4-position RS485 bias/term DIP switch
8-position DIP switches (3 ea)
Outside speaker volume control
Outside speaker Hi-Lo volume jumper
“A” sidetone
“B” sidetone
Inbound volume control
VAA level control
Ceiling speaker volume control
Transmit message volume control
Vehicle present tone volume control
TX/RX frequency Receive - 926.064MHz — 927.864MHz
Transmit - 902.136MHz — 903.936MHz
Dimensions 8.2”H x 14.2”W x 3.5”D (208 mm x 361 mm x 89 mm)
Weight 6.5 lbs (2.95 kg) maximum
HS500 Headset COMMUNICATOR®
Battery type 3.6V Lithium ion
Battery life 10 hours (typical)
Battery operating temperature 32oF −104oF (0oC −45oC)
RF frequency Receive - 902.136MHz — 903.936MHz
Transmit - 926.064MHz — 927.864MHz
Weight 4.7 oz (.133 kg) with battery
Controls Power ON/OFF button
Volume-up button
Volume-down button
“A1” button
“A2” button
“B” button
Indicator Dual-color LED (red/green)
AC40 Battery Charger
Voltage input 16.5VAC
Number of charging ports 4
Number of storage ports 6
Charging time 2 hrs maximum
Dimensions 7.6” x 4.6” x 2.6” (193mm x 117mm x 66mm)
Weight 1.5 lb (.68 kg)
Indicators 4 red, 4 green, 4 yellow LEDs

17
VII. OPTIONAL EQUIPMENT
Equipment Model Number
Headset COMMUNICATOR®HS500
Battery for HS500 BAT40
Headset Earmuff No model number
Ceiling Speaker MM100
Ultrasonic Vehicle Detector DU3
Vehicle Detector Board VDB101A
Vehicle Detector Loop (underground) VDL100
Message Repeater MR300
Remote Display R30
Low-Profile Speaker SP2500LP
Microphone DM3
Mode Switch (dual lane) MS1000
Switcher Circuit Board No model number
Extended Range Antenna ANT10
VIII. FCC NOTICE
HME wireless radio frequency systems are type-accepted in the United States under Part
90 of the Federal Communications Commission (FCC) Code of Federal Regulations, and
type-approved in Canada by Industry and Science Canada. Because licensing depends
on the system’s application, it is the user’s responsibility to apply for a license from the FCC
in the U.S. and its possessions, or from Industry and Science Canada in Canada and its
territories. Licensing requirements vary from country to country. Contact your local
licensing agency for specific requirements.
This device complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) This device
must accept any interference received, including interference that may cause undesired
operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communication. Operation of this equipment in a residential
area is likely to cause harmful interference, in which case the user will be required to
correct the interference at his own expense.
Changes or modifications not expressly approved by HM Electronics, Inc. could void the
users authority to operate this equipment.