Applied Wireless SF900 User manual

User’s Guide
Instructions for Installation and Operation
900 MHz Spread Spectrum
Switch Follower
Remote Switching Products
Model SF900
900 MHz Spread Spectrum
Two-Way Remote Control
Model SFT900-4
Long Range Wireless Applications

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Applied Wireless Inc.
Switch Follower
Model SF900
Two-Way Remote
Model SFT900-4
Product Descriptions
The SF Series switch followers are a two way system designed to provide a quick
and cost effective solution for a variety of wireless switching applications. Each
unit has four inputs connected to a transmitter and four 10 Amp SPDT relay
outputs connected to a receiver. Designed to work in pairs, the output relay at
the receive end of one unit will “follow” the input at the transmit end of the other
unit.
An optional loopback mode can be set for each channel separately. This will
activate the corresponding relay at the originating (TRANSMIT) end confirming
the switch change was carried out at the other unit. The inputs on the other unit
are ignored for those channels set in the loopback mode.
The inputs are opto-isolated and may be operated by an applied voltage that can
be supplied by a power source from 5 to 24 Volts AC or DC through a switch
contact, relay, sensor, PLC output, etc.
Alternatively, instead of automatic switch following operation, the SF900 can
operate as a 4-channel wireless relay using a SFT900-4 4-button handheld
remote control. In this configuration, latched, momentary and toggle mode
outputs are available. When a button is pushed on the SFT900-4, a beep will
indicate that the proper relay was triggered in the SF900. In this configuration,
the SF900 is always in the loopback mode.
These products utilize frequency hopping spread spectrum technology and are
immune to interference and multipath fading. All inputs and outputs are
independently isolated from each other and from the power supply and ground.
Expected range with these products is 1 mile*. The receiver requires 12 to 24
Volts AC or DC (supply not included).
* Unobstructed, straight line-of-sight range, when used with the standard antennas
included with the units.

Installation Instructions
Before Beginning the Installation
Plan your installation carefully. The physical location and orientation of
the unit will have a significant influence on reception, particularly at
longest ranges. For best results, the antennas should be positioned
vertically (pointing either up or down). If necessary, use double-sided
foam tape or hook & loop fasteners (not supplied) to secure the unit to a
non-metallic vertical surface. Also, keep in mind that the RF signal from
the unit will travel through most non-metallic building materials (wood,
stucco, brick, etc.), however maximum stated reception range is based on
unobstructed line of sight conditions.

Mode Configuration Settings
Use the internal 4-position DIP switch and the J1 jumper to set
configuration modes.
SF900’s in use as switch following pair
“Transmit” side unit
“Receive” side unit
Loopback Off Loopback Enabled
J1:
T or L
T or L
T or L
SW1
OFF (default)
OFF
ON
SW2
OFF (default)
OFF
ON
SW3
OFF (default)
OFF
ON
SW4
OFF (default)
OFF
ON
Loopback Mode: When enabled, activates the corresponding relay
at the originating (transmit) end confirming the switch change was
carried out at the receiving end. When loopback mode is enabled,
the corresponding inputs at the “receive” end are ignored.
SF900 Settings when used with SFT900-4 4-Button Remote
Control Transmitter
Switch /
Mode
Momentary
Toggle
Latched
Output
J1
T or L
T
L
SW1
OFF
ON
ON
Relay 1
SW2
OFF
ON
ON
Relay 2
SW3
OFF
ON
ON
Relay 3
SW4
OFF
ON
ON
Relay 4
Momentary: Output is activated for only as long as button is
pressed.
Toggle: “Push on/Push off”
Latched: A latched mode operates with at least one other channel
set to latched mode. For example, if channel 1 and 2 are set to
latched mode, pushing button 1 on the SFT900-4 will turn relay 1
on the SF900. Pushing button 2 will turn off relay 1 and turn on
relay 2. This mode is often used when a separate on and off
button is desired. If more than 2 channels are selected for latched
mode, only 1 relay can be activated at any given time. Any
activated relay will result in the others being turned off.

SF900 Latched Mode Jumper Settings When Used With SFT900-4
Transmitters
Learn Mode Instructions
The SF900 learn mode is initiated by pushing the learn button on both units
and releasing them. The power LED’s on both units will start blinking and a
handshaking protocol is initiated. After a few seconds, the power LEDs will
stop blinking and stay ON. The data light on each unit will also turn ON
indicating successful pairing operation.
To pair a SF900 switch follower with a SFT900 hand-held remote unit, push
the learn button on the SF900 and the power LED will start blinking. Then,
in sequence, push 1, 2, 3, 4 on the SFT900. Two beeps will be heard from
the SFT900. After a few seconds of handshaking protocol, the power LED
on the SF900 will stop blinking and remain ON and the data LED will light.
A beep will be heard from the SFT900. Pairing will be complete.
SF900/SF900 Pair Learn Procedure Summary
1. Push the LEARN button on both SF900’s to be paired. The
LEARN LEDs will start blinking on both units.
2. When the LED’s stop blinking and stay on, the units have been
successfully paired.
SF900/SFT900-4 Pair Learn Procedure Summary
1. Push the LEARN button on the SF900. The LEARN LED will start
blinking.
2. On the SFT900-4, in sequence push buttons 1, 2, 3 and 4, holding
the final 4 button down for 2 seconds. Two Beeps will be heard
from the transmitter.
3. When the power LED on the SF900 stops blinking and remains ON
and the data LED lights the pair is successfully programmed. A
beep will also be heard from the SFT900.
The SF900 will retain this pairing memory, even if power is discontinued
from the receiver.
If more than one transmitter is to be used with the SF900 Receiver, the
transmitters must be purchased from the factory with identical address codes.
Latched Mode
When paired with SFT900 transmitters, the J1 Jumper
setting must be set to the L position to allow SW1 to select
channels for the Latched mode.
For any other mode of operation, the J1 jumper should be
set in the T position, the factory default configuration
J1
J1
T L

LED Indicators (Receiver)
Power/Learn LED: Indicates that voltage is applied to the receiver. LED blinks
when in the learn mode.
Data LED: Is lighted when a valid link is established,
Relay LED’s (4): They indicate for each relay whether the relay is activated.
RSSI (Received Signal Strength Indicator): LED indicates reception of RF
signal at the receivers frequency of operation. For troubleshooting purposes, it
can indicate the following:
1) Whether the transmitter is actually transmitting.
2) Whether there are interfering signals at the receiver’s frequency of
operation. With the units NOT paired, the LED should remain off if the
transmitter button is not being pressed. Any LED indication would
indicate that an interfering signal is present, the severity of which is
indicated by how much the LED is activated.
Controlling 120V Circuits and High Amperage Loads
The SF900 transceiver is not UL listed, and 110 Volt or higher voltage circuits
should not be directly connected to the unit. These high voltage circuits can be
controlled however by using a contactor with a 24-VAC coil (AW PN 269006,
30A contactor). For low voltage loads over 10 Amps, Applied Wireless offers
high current relays (AWPN 269007, 30A 12VDC Relay) that can be controlled
by the SF900.

Receiver Package Information
NC-Normally Closed Contact
C1- Common Contact
NO- Normally Open Contact-
Terminal Strips may be “unplugged” for ease of installation.
Block Diagram

Ordering Information
Model No.
Product Description
SF900
Switch Follower, Single Unit
SF900-P
Switch Follower, 2-Unit Set
SFT900-4
4-Button Handheld Transmitter
Receiver Electrical Characteristics
Parameter
Min
Typ
Max
Unit
Operating Voltage Range (AC or DC)
10
12
36
Volts
Operating Current, Receive Mode
45
56
mA
Operating Current, Transmit Mode
212
225
mA
“Input Signal” Resistance
4.7k
Ohms
“Input Signal” Input Voltage (AC or DC)
5
24
Volts
Output Relay Contact Ratings @ 28 VDC
10
A
Frequency Range
902
928
MHz
Receiver Sensitivity
-112
dBm
Output Power
250
mW
Antenna Input Impedance
50
Ohms
Operating Temperature
-20
+60
C
SFT900-4 4-Button Handheld Transmitter
Battery: CR123
Size: 3.40 x 2.56 x 1.02 in. (86.4 x 65.0 x 25.9 mm)
FCC ID:
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.
Related Optional Products
AW Part
Number
Description
Volts
Current
800216
AC Power Adapter, 120VAC Input
12 VDC
500 mA
610347
AC Power Adapter, 120VAC Input
24 VDC
800 mA
610300
AC Power Transformer, 120VAC Input
24 VAC
20 VA
269006
AC Power Line Contactor, SPST, 30A, 24VAC coil

Application Drawings
Remote Activation of Relay(s)
In this example, switch(s) activation on a water tank or other switch application, will
remotely activate a relay(s) for activating, pump, motor, light or other device.

Application Circuit-Loopback Mode
Loopback Mode
In loopback mode, the relay is activated as in the earlier example. However, in Loopback
mode, a transmission will then be sent back to the originating location and a relay
activated as feedback that the remote instruction has been carried out.
These switches (or
other low voltage
signals up to 36 Volts)
controls these lights (or
other low voltage loads
up to 10 Amps.
The status of these
lights (or other low
Voltage loads up to 36
Volts) control these
lights (or other low
voltage loads up to 10
Amps.
These switches
have no effect.
There can be a mix of loopback modes, however only
one side of each channel can be enabled and the
corresponding input on that side is disabled.
AC or DC Power
Supply or Adapter
as required.
AC or DC Power
Supply or Adapter
as required.

Application Circuit- Thermostat to HVAC

ONE YEAR LIMITED WARRANTY (USA)
Products manufactured by APPLIED
WIRELESS, INC. (AW) and sold to purchasers
in the USA are warranted by AW according to
the following terms and conditions. You should
read this Warranty thoroughly.
•WHAT IS COVERED,AND DURATION OF
COVERAGE:
AW warrants the product to be free from
defects in materials and workmanship for one
(1) year from the date of purchase by the
original end user purchaser.
•WHAT IS NOT COVERED:
This warranty does not apply to the following:
1. Damage caused by accident, physical or
electrical misuse or abuse, improper
installation, failure to follow instructions
contained in the User’s Guide, any use
contrary to the product’s intended
function, unauthorized service or alteration
(i.e. service or alteration by anyone other
than AW).
2. Damage occurring during shipment.
3. Damage caused by acts of God, including
without limitation: earthquake, fire, flood,
storms, or other acts of nature.
4. Damage or malfunction caused by the
intrusion of moisture or other
contamination within the product.
5. Batteries supplied by AW in or for the
product.
6. Cosmetic deterioration of chassis, cases,
or pushbuttons resulting from wear and
tear typical of normal use.
7. Any cost or expense related to trouble-
shooting to determine whether a
malfunction is due to a defect in the
product itself, in the installation, or any
combination thereof.
8. Any cost or expense related to repairing or
correcting the installation of an AW
product.
9. Any cost or expense related to the
removal or reinstallation of the product.
10. Any product whose serial number or date
code is altered, defaced, obliterated,
destroyed, or removed.
This warranty is extended to the original
purchaser of the product(s) only, and is not
transferable to any subsequent owner or
owners of the product(s). AW reserves the right
to make changes or improvements in its
products without incurring any obligation to
similarly alter products previously purchased.
•EXCLUSION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES:
AW expressly disclaims liability for incidental
and consequential damages caused (or
allegedly caused) by the product. The term
“incidental or consequential damages” refers
(but is not limited) to:
1. Expenses of transporting the product to
AW to obtain service.
2. Loss of use of the product.
3. Loss of the original purchaser’s time.
•LIMITATION OF IMPLIED WARRANTIES:
This warranty limits AW’s liability to the repair
or replacement of the product. AW makes no
express warranty of merchantability or fitness
for use. Any implied warranties, including
fitness for use and merchantability, are limited
in duration to the period of the one (1) year
express limited warranty set forth herein. The
remedies provided under this warranty are
exclusive and in lieu of all others. AW neither
assumes nor authorizes any person or
organization to make any warranties or assume
any liability in connection with the sale,
installation, or use of this product.
Some states do not allow limitations on how
long an implied warranty lasts, and some states
do not allow the exclusion or limitation of
liability for incidental or consequential damages
so the limitations or exclusions stated herein
may not apply to you. This warranty gives you
specific legal rights and you may have other
rights which vary from state to state.
(continued on next page)

ONE YEAR LIMITED WARRANTY (USA), cont.
•HOW TO OBTAIN WARRANTY SERVICE:
If a product covered by this warranty and sold in the USA by AW proves to be defective during the
warranty period AW will, at its sole option, repair it or replace it with a comparable new or
reconditioned product without charge for parts and labor, when said product is returned in compliance
with the following requirements:
1. You must first contact AW at the following address/phone for assistance:
APPLIED WIRELESS, INC.
1250 Avenida Acaso, Suite F
Camarillo, CA 93012
Phone: [phone]
If you are instructed to return your product directly to the factory, a Return Merchandise
Authorization number (RMA) will be issued to you.
2. You must package the product carefully and ship it insured and prepaid. The RMA number must
be clearly indicated on the outside of the shipping container. Any product returned without an
RMA number will be refused delivery.
3. In order for AW to perform service under warranty, you must include the following:
(a) Your name, return shipping address (not a PO Box), and daytime telephone number.
(b) Proof of purchase showing the date of purchase.
(c) A detailed description of the defect or problem.
Upon completion of service, AW will ship the product to the specified return shipping address. The
method of shipping shall be at AW’s sole discretion. The cost of return shipping (within USA) shall be
borne by AW.

Troubleshooting Guide
Symptom
Possible Problem
Notes
Poor Range
Antenna
Receiver Antenna connected,vertically oriented and placed
preferably at least 7' high and away from metal surfaces.
Antenna will not work inside a metal box.
Battery
Replace Battery (SFT900-4)
Doesn't Work Power
Check power to receiver (power LED lights?)
Slow Response

Applied Wireless products are designed and manufactured
with pride in the United States of America
Copyright 2007 by Applied Wireless, Inc. All rights reserved.
Specifications subject to change without notice.
APPLIED WIRELESS,INC.
1250 Avenida Acaso, Camarillo, CA 93012
Phone: [phone] Fax: [phone]
Email: [e-mail]
www.appliedwireless.com
Pub. # UG-SF Rev. date 10/10