CMR Electrical LD32 User manual

CMR Electrical Ltd
Bolton House
Five Chimneys Lane
Hadlow Down
East Sussex
TN22 4DX
Tel: [phone]
LD32
Water Leak Detection Manual

2
Contents
1) System Overview
2) Display and Control
3) Water Detected Alarm
4) Sensor Fault Alarm
5) Relay outputs
6)“Mute” push button
7) “Light” push button
8) “Info” push button
9) Beacon and beacon sounder
10) Fitting SCA repeat alarm or SMS / Email messaging system
11) Outstation
12) Positioning the Outstations
13) Fitting and wiring Alarm unit
14) Outstation wiring
15) RS485 data cable End of Line Resistor
16) Positioning the water detection cable
17) Fitting Cable Clips
18) Water Detection Sensitivity Adjustment
19) Water Shutdown Valve
20) Water Shutdown Valve Override Procedure
21) Fitting the battery backup
22) Commissioning
23) Maintenance
24) Fault Diagnoses
25) Installation Drawings

3
1) System Overview
The unit has been designed to interrogate individual outstations and report back to the main controller if
water or a disconnected sensor is found. On powering up, the unit will display “SETTING UP PLEASE
WAIT” until all remote outstations have been interrogated for their current status. Providing there are no
alarms or faults on the system, the displays backlight will change to green and all zones will be shown as
“NORMAL”. With the system clear from alarms or faults, after five minutes the display will go into
power saving mode by turning off the backlight. If required, the light can be turned back on again for a
further five minutes by pressing the “Light” button.
When a water leak is detected, the zone “Alarm” lamp contained within the appropriate outstation will
start to flash. This has been provided to give maintenance staff local alarm status indication, thereby
alleviating the need to keep interrogating the main alarm controller for an update. Also, if fitted within the
outstation, the appropriate water shutoff valve will close thereby removing the risk of further water
damage. At the same time, the alarm will be displayed on the controller’s screen in large letters i.e.
“WATER DETECTED ZONE 15”, with the displays backlight flashing between red and white. The
internal “New Alarm”, “Common Alarm” relays will change state, the audible warning device will sound
and if fitted (optional equipment), the sounder beacon will start up, the text messaging system will send a
text or email and the individual BMS relay will operate. On pressing the “Mute” button, the display will
change to the normal screen, but with a white backlight, the zone in alarm screen statement will flash i.e.
“Zone 15 ALARM”, the internal warning device will stop, the “New Alarm” relay will de-energise
leaving the common alarm relay still energised and if fitted (optional equipment) the remote sounder will
stop, leaving the beacon flashing. Once the water has been removed from the sensor and provided the
alarm has been muted, the system will automatically reset its self back to normal operation. Please note,
the outstation Alarm lamp is a true current state indication and unlike the main control unit, it is not
latched and therefore muting is not required for a reset.
The outstations also monitor’s all water detection cables and sensors for disconnection. If a fault is found,
the appropriate “Fault” lamp on the outstation will start to flash, again this has been provided to give
maintenance staff local alarm status indication. In the same way as described above, the fault will also be
shown on the controller’s screen but with the appropriate statement i.e. “SENSOR FAULT ZONE 15” the
audible warning device will sound, and only common Fault relay will energise. On pressing the “Mute”
button, the display will change to the normal screen, but with a white backlight. The zone in alarm screen
statement will flash i.e. “Zone 15 FAULT”, and the internal warning device will stop. Providing the mute
button has been operated, once the fault has been rectified, the system will automatically revert back to
normal operation. Please note, the outstation Alarm lamp is a true current state indication and unlike the
main control unit, it is not latched and therefore muting is not required for a reset.
An additional lamp has been provided on each outstation identified as “Active” this lamp indicated that
the outstation is successfully communicating with the main alarm unit and should be flashing at a rate of
1-2 seconds. An active lamp is also provided for the same reason within the main alarm unit and should
appear (flashing at a high speed) to be permanently on.
A button identified as “Info” is provided on the screen of the alarm unit. Pressing this will display the
number of expected zones, the total number of outstations that should be fitted to the system, the total
number of current alarms (water leaks) and the total number of current faults (disconnected sensor). If the
“Exit” button is not pressed within 5 seconds, the unit will automatically revert back to the main screen.
If fitted, some or all the outstations might contain a water shutoff control board. This additional feature
requires a 230VAC supply to drive the remotely fitted water valves. Depending upon the type of
configuration asked for at the time of ordering, i.e. each zone with its own valve or all zones controlling
the same valve, a 230VAC two core cable needs to be run between the appropriate outstations L E N
terminals to the valve. Lights have been provided to indicate if the valve has been asked to close. In
normal operation with no alarms these lights should be off and will only illuminate when the valve is
asked to close. If required, positioned on the outstations top board is a push button identified as “Valve
Override”. Pressing this with no alarms on the outstation will do nothing. However, if the outstation has
an alarm (water detected) pressing will start an audible pulsing sound. Keeping the button pressed until
the sound stops, will illuminate the “Valve Override” lamp (top board), and open the shutdown valve.

4
2) Display and Control
Screen 1
Normal, no alarm or faults
Screen 2
Unacknowledged (new) water leak detected
Screen 3
Acknowledged water detected alarm
Screen 4
Unacknowledged (new) Cable fault
Screen 5
Acknowledged Cable fault
Screen 6
System information
3) Water Detected Alarm
When the detection cable comes into contact with water anywhere along its length, the audible warning
device will start, the New alarm and common alarm relay will operate and display will start flashing with
the zone number. To stop the audible warning press the “Mute Alarm” button. On muting, the display will
stop flashing and display screen 3. The system will remain in this state until the water is removed from
the cable.
4) Sensor Fault Alarm
Because of the exposure of the detection cable on the floor the system monitors for any breaks in the
detection cable and the interconnection cable between the control unit and the detection cable. Provided
continuity is maintained the unit will display screen 1. If a break within the cable is found, the audible
warning device will start, the fault relay will operate and the display will start flashing and change to
screen 4 To stop the audible warning press the “Mute Alarm” button. On muting, the screen will stop
flashing indicating an acknowledged alarm and change to screen 5. The system will remain in this state
until the cable fault is repaired, when the display will revert back to screen 1. If the controller detects a
break in the cable, the system will continue to detect water up to the point of the break.
5) Relay outputs
Three sets of volt free contacts have been provided for the following and can be found within the unit on
the main PCB. The “New Alarm” contact is provided to advise a BMS system when the system sees a
new water detected alarm or a new sensor disconnected alarm. After acknowledging the new alarm, this
relay re-sets and arms itself for the next event.
a) 1 x Common Alarm (Any zone detecting water will energise this relay)
b) 1 x New Alarm (Only a new alarm or fault will energise this relay which turns off when muted)
c) 1 x Common Fault (Any sensor becoming disconnected will energise this relay, see note below)
NOTE: the common fault N/O, Com, and N/C statements on the PCB are only true when the units is
powered down

5
5a) Outstation common alarm relay
Each outstation has its own common alarm relay for just the zones fitted to the outstation.
Located on the top left of the outstation board (see above) use the two terminals provided. Note; this
contact is only Normally open, Close in alarm.
6)“Mute” push button
The mute button is provided to silence the audible warning device. This button will also silence the
remote sounder if fitted.
7) “Light” push button
In darkened areas, if the display back light is off, pressing the “light” will turn it on for 5 minutes.
8) “Info” push button
Use this button to display the current status of the system. Displayed are the total number of expected
system zones, the total number of expected outstations, the total number of current water detected alarms
and the current number of cable faults. Pushing the “Exit” button will revert to the normal screen. The
system will automatically revert back to the normal screen if the Exit button is not pressed.
9) Beacon and beacon sounder
If a beacon or beacon sounder is supplied connect to the three terminals identified as “Beacon” as
follows.
9a) Non-Mutable Beacon or beacon sounder
If the beacon or the beacon sounder is to be active (On all the time) until the water leak alarm has
cleared, connect as follows Terminal
reference
Connect Beacon / beacon sounder
terminals to the following terminals
+V
Beacon +V
or
Strobe /Tone +
terminal
BOV
Beacon
-
V or Strobe /Tone
-
terminal
SOV
NO connection to this termi
nal
9b) Mutable Beacon or beacon sounder
If the beacon or the beacon sounder is to turn off when the “Mute” push button is pressed connect
as follows. Terminal
reference
Connect Beacon / beacon sounder
terminals to the following terminals
+V
Beacon +V
or Strobe /Tone + terminal
BOV
NO connectio
n to th
is terminal
SOV
Bea
con
-
V or Strobe /Tone
-
terminal
9c) Mutable sounder Beacon on all the time
If the beacon is to remain alight all the time an alarm is current but the sounder is to be turned off
when the “Mute” push button is pressed connect as follows.
Terminal
refer
ence
Connect Beacon / beacon sounder
terminals to the following terminals
+V
St
robe and Tone + termin
al
BOV
Strobe
-
terminal
SOV
Tone
-
terminal
Warning; if the above option “9c” is required, remove the electrical link connected between the second
(Strobe -) & third terminals (Tone -) terminals within the sounder.

6
10) Fitting SCA repeat alarm or SMS / Email messaging system
SCA
Terminal
No.
SMS
Terminal
No.
Cable wire colours fitted
to the messaging system
+V
DC
RED
Sig
Z1
BLUE
0V
COM
BLACK
11) Outstation Standard outstation
Outstation with shutdown valve control
Zone water & fault
lights
O
ne
set for each zone
Terminal connection to
detection cable or sensor
one for each zone
Test push button used to
put the zone into alarm
one for each zone
RS485 data and
power cable
terminal
Shutdown Override
push button and light
230VAC supply to
terminals LEN
230VAC supply to
drive open the
shut
down valve
As per standard
outstation above
Use the “SMS”
term
inal
block
Outstation number
“Active”
communication to
alarm unit healthy
light

7
12) Positioning the Outstations
All outstations are wall mounted using the fixing points located in each corner behind the removable front
cover. Outstations should be mounted in a position to allow accessibility to the internal components and
cables.
13) Fitting and wiring Alarm unit Main control unit
THIS EQUIPMENT SHOULD ONLY BE CONNECTED AND WORKED ON BY A QUALIFIED
ELECTRICIAN.
To mount the unit to a wall, first remove the front cover to expose the internal equipment. In each corner
of the housing positioned below/above the front cover fixings will be found the mounting holes. Plastic
glands have been provided for incoming power and outgoing signal cables. The large gland requiring a
20mm hole within the housing is for the power cable and the smaller gland requiring a 13mm hole within
the housing is for the signal cable. Care should be taken when drilling the holes to ensure no damage
occurs to the electronic equipment. A suitably rated 230VAC power cable supply should be run from a
fused spur to the unit and terminated to the internal terminal block marked “L”, “E” & “N”. The fuse
within the fused spur should be rated at 5 Amps.
If Fitted
Beacon/Sounder If Fitted
SMS Text
230VAC
mains
Input New
Alarm/Fault
contact
Common
Alarm
Volt free
contact
Common
Fault
Contact
See Item 5
above
RS485
data and
power to
outstations

8
Output Volt Free contacts for use by a Building Management System.
Function Required Function
New alarm
Operates
on ea
ch
new water leak al
arm
or sensor fault,
reset by muting
Common Alarm
An
y
z
one in
water
alarm
,
clears with no
water
alarms on the
sy
stem
Common
Faul
t
Operates
on disconnected sensor or power
fault
(
See Item 5 above)
Power Faul
t
See Common Fault
14) Outstation wiring
The maximum cable length is dependent upon the number of fitted outstations. The RS485 line is capable
of distances up to 1000m using 0.5mm cables which must be shielded. However, the outstation power
supply (“+V” & “0V”) cable size must be sized to give a maximum volt drop of no more than 12 volts.
Calculation of this can be done in the normal way using a supply voltage of 24VDC and a load current of
0.01A per outstation, i.e. 30 outstations = 0.3A. Using a Belden 0.5mm 4 core industrial cable (2 cores for
outstation power & 2 cores for data line) type YE00906.00100 or similar will provide outstation power
and RS485, to 23 outstations 300m from the main control unit. If shutdown valve control boards are
provided, (see left hand picture below) a 230VAC 3A supply will need to be feed to the LNE terminals as
shown. First connect the cable from the controllers RS485 terminal block shown above, to the outstations
5way terminal block as shown below. It is important that the cable run is laid out in a daisy chain pattern,
i.e. main alarm unit (above) to the nearest outstation, then on to the next outstation one after the other,
avoiding teeing off the main line.
Main Controller terminal number
Outst
ation terminal number
+V (Red)
+V (Red)
0V (Black)
0V (Black)
A (White)
A (White)
B (Yellow)
B (Yellow)
Use the “SC” terminals to terminate the cable screening cable
14a) Power Booster
For installations where the 24VDC outstation power supply voltage drops below 12VDC due to long
cable runs, a power booster can be used, connected to the “+V” and “0V” outstation terminals. This
power booster must have a 24VDC regulated, ripple free output of suitable rating and MUST not turn into
a load to the main supply when its input power is turned off i.e. it should be fitted with blocking diodes.
Correct connection polarity is critical as damage will occur if incorrectly connected.
14b) Relay Outstations
The relay outstation is provided in applications where a volt free alarm contact for all zones is required
such as a Building Management System. Connection is shown above and in Item 25’s installation
drawing below.
15) RS485 data cable End of Line Resistor
As with all RS485 data lines, a 120Ω resistor MUST be fitted at the end of the data cable run, this being
the furthest away from the alarm unit in cable length terms. This resistor can be found fitted to the RS485
terminal block in the last (highest numbered) outstation. The outstation number can be found in the top
right-hand corner of each outstation. If this outstation is not the furthest away, remove the resistor and
terminate it between terminals “A” & “B” on the appropriate outstation. Being a resistor, it is NOT
polarity dependant.

9
Stannard Outstation Valve control Outstation
Water detection and signal cable
16) Positioning the water detection cable
The detection cable is susceptible to damage and should not be fitted to areas where the cable is likely to
be damaged or walked on unless a perforated steel cover is used. If fitting the cable around Air
Conditioning Units with humidifiers, ensure that cable is positioned at least one metre from the ACU to
stop intermittent alarms being generated from over humidity or water droplets from the AHU. Having
positioned the detection cable, ensure that the End of line terminator is plugged into the end of the cable
(see drawing above).
End of line
Terminators
Plug MUST
Be fitted at the
end of the
detection cable
Terminate the Red
and Black wires to
to zone terminals
within the alarm
unit as shown
above
Water leak
detection Cable
run around the
area to be
protected
Signal cable
used to connect the water
detection cable, to the
alarm unit.
Signal cable to
Water detection
cable connectors
RS485 terminal block layout
Sc|A|B|0V|+V
Control unit Outstation
Sc to Sc (Screen wire)
A to A (wire 1)
B to B (wire 2)
0V to 0V (wire 3)
+V to +V (wire 4)
Wrongly or badly connected wiring will result in
damage or intermittent alarms or faults
Water detection sensor wiring
Only the Red and Black
cables in the white signal
cable are used.
Red wire to Sig+
Black wire to Sig-
Wrongly or badly connected
wiring will result in
intermittent faults or alarms.
The end of line terminator
MUST be fitted
Connect a 230VAC
supply to terminals
LEN

10
17) Fitting Cable Clips
If Cable Clips are required, to protect the small sensor wires and to stop false water detected alarms from
occurring insulating tape should be first applied around the detection cable before the clip tongue is
closed. Clips should be fitted approximately every 1 to 1.5 metres apart. When using clips make sure that
the cable touches the floor between the clips, DO NOT tighten the cable so that the cable does not touch
the floor.
18) Water Detection Sensitivity Adjustment
To increase the sensitivity of the cable, turn the potentiometer CLOCKWISE, to de-crease the sensitivity
turn ANTICLOCKWISE.
19) Water Shutdown Valve
Valves are controlled from the appropriate outstation and would have been factory set at the time of
ordering i.e. each zone controls its own valve, all zones operate a common valve, zones 1 & 2 operate the
same valve etc. Within the outstation, an override push button and light are provided to allow the water to
be turned back on even though water is still being detected by the detection sensor as outlined in Item 17
below. Connection of Water Shutdown Ball Valve
The Valve is supplied with a short length of cable that will need extending back to the Z1 or Z2 Valve
terminals within the alarm unit.
The 230VAC supply to
the valves is generated
from within the alarm
unit. 15 to 25mm valves
are supplied with a red
and black cable whilst
larger valves are red and
green. For good practice
connect live to the red
wire and neutral to the
black or green wire.
Insulating Tape
Under the fixing
clip tongue
Increase Sensitivity Decrease Sensitivity

11
Specification
Type motor open, automatic close
Voltage 230VAC
Buren 5 watt moving, <1 watt maintaining
Operation Powered Open, capacitor reserve used to close
Controlled fluid temperature -15 to 100°C
Maximum pressure
½”
¾
”
1”
1 ½”
2”
0
-
1
0
bar
0
-
1
0
bar
0
-
1
0 bar
0
-
10
bar
0
-
10 bar
WARNING, In order to shut properly, this type of valve need powering for at least 3 minutes.
Connection of Water Shutdown Solenoid Valve
PLEASE NOTE;
We don’t recommend that this type of valve and will NOT be supplied by CMR electrical.
However, if this type of valve MUST be fitted, ensure that the arrow on its body facing the direction
of flow, if not, the valve will not stop the flow of water.
20) Water Shutdown Valve Override Procedure
Operating a shutdown override can only be carried out at the appropriate outstation and will only work if
there is a current water leak detected alarm light illuminated on the outstation’s top PCB (see Item 10
above). To put the system into shutdown override and re-open the valve, press and keep pressed the
“Override” push button (see Item 10 above). On pressing the button, the unit will start beeping, keeping
your finger on the button, wait for the beeping to stop. Once this happens the “override” light will
illuminate and the valve “Closed” light will extinguish (see Item 10 above) and the valve will open. You
can now stop pressing the button. The system will automatically cancel the override once the zone stops
detecting a water.
21) Fitting the battery backup
The battery should only be connected after the system has been commissioned. Mount the battery box
next to and butting up to, the alarm unit and drill a 10mm hole between both boxes to allow the battery
cables to pass through. Connect the BLACK cable to the “—“ battery terminal and the wire to the
batteries “+” terminal. If the battery is misconnected, the battery fuse located on the PCB will blow.
The 230VAC supply to
the valves is generated
from within the alarm
unit.
Having removed and
opened the 3 pin socket,
connect live to terminal
“1”, neutral to terminal
“2” and Earth to the earth
terminal

12
22) Commissioning
Having connected the unit as described above, turn on the mains power to the unit. The screen should
display “Setting up please wait”, If not, refer to the “Fault Diagnostics” below. If the unit powers up with
the audible warning going, press the mute button and wait to see if the alarm clears. If the alarm remains
after approximately 10 seconds, refer to the “Fault Diagnostics” below. With the unit powered with
screen 1 (Item 2) above in the display, unplug the end of line terminator (Item 13 above), positioned at the
end of the detection cable for zone 1, outstation 1. The controller should display screen 4 (item 2 above)
and the audible warning device should sound, if not refer to the “Fault Diagnostics” below. Pressing the
“Mute” button, the audible warning device should stop and screen 5 (item 2 above) should be on display.
Replace the End of line terminator to return the system to normal and repeat for the other zone on
outstation 1 and all other zones on all the other outstations. Using a cup of CLEAN water, immerse a
small area (50mm long) of cable on zone 1, outstation 1, into the water. The controller should display
screen 2 (item 2 above) and the audible warning device should sound, if not refer to the “Fault
Diagnostics” below. Press the “Mute” button, the audible warning device should stop and the display
change to screen 5 (Item 2 above). Remove the water and wipe the cable with some tissue paper. Repeat
for all other zones on outstation 1 and all zones on all the other outstations.
23) Maintenance
The system should be fully tested at least once a year for correct operation and if fitted, a check made to
ensure that the shutoff valve operates correctly. All cables should be inspected at the same time for signs
of damage, dirt contamination or mis-placement.

13
24) Fault Diagnoses
“Active” LEDS are provided on all outstations and the main alarm unit. The lights are provided to help
when fault finding. When all interconnecting cabling is correct, the alarm unit “Active” LED should look
to ON and all the outstation “Active” LEDS should be flashing. If the alarm units LED is OFF, it
indicates that the controller can communicate to any of the outstations. If the alarm units LED is flashing,
it indicates that the controller is having difficulty or can’t communicate to some of the outstations. If an
outstations “Active” LED is not flashing, it indicates that the controller can’t communicate with it.
Fault Possible Reason
Display is OFF and the unit
appears dead 1) Alarm unit in power save mode. Press the “Light” push button 2) No power to the control unit. Test with a meter
3) The power fuse has blown. Test the fuse with a meter
Display is shows” SYSTEM
FAULT” 1) Power off and on again. If this fails to resolve the problem contact the manufacturer
All zones are displaying “FAULT” 1) If the “Active” LED next to the display is permanently ON. All sensors on all
outstation could be disconnected. Press one of the outstation “Test” buttons to
see if the statement changes to “Alarm”, screen 2 above. If the answer is yes,
the sensors are disconnected.
2) If the “Active” LED next to the display is OFF. Disconnected cable between
the alarm unit and all outstations.
3) If the “Active” LED next to the display is flashing. Disconnected or wrongly
cable between the alarm unit and all outstations.
Display is showing some zones as
“NORMAL” and some as
“
FAULT
”
1) Check that all outstation “Active” LEDS are flashing. If one or more are not
flashing, disconnected or wrongly connected data cable to that outstation. If
all are
flashing, disconn
ected se
nso
r or sensors.
All zone sensors are fitted correctly
but the display is showing some
zones in “FAULT”
1) If the “Active” LED next to the display is permanently ON.
2) If the “Active” LED next to the display is OFF. Disconnected cable between
the alarm unit and all outstations.
3) If the “Active” LED next to the display is flashing. Disconnected or wrongly
cable between the alarm unit and all outstations.
1) Check that all outstation “Active” LEDS are flashing. If one or more are not
flashing, disconnected or wrongly connected data cable to that outstation,
2) Take a note of what zones are normal and in alarm and turn off the controller
then back on again. If different zones go into alarm and normal, this indicates
a
Disconnecte
d
or wrongly
c
onnected data
cab
le
The display appears dead 3) Check that the “Active” LEDs on the controller is ON, that all outstation
“Active” LEDS are flashing and press one of the outstation “Test” buttons to
simulate an alarm. If all looks correct but the display fails to react Return to
man
ufacture
The system will not record a water
detected alarm, the Display and
audible warning device do not react
to water on th
e cable.
1) Sensitivity could be too low or a Possible system fault. Remove the lid from
the small plastic box connected to the detection cable and turn the
potentiometer until the system goes into alarm.
2)
System fault.
Return to manufacture
Horn not working 1) System fault. Return to manufacture
2)
The battery will not power the
system 1) Battery discharged, disconnect a lead and test with meter. 2) Battery fuse blow, see item 10
3)
Charger fault, disconnect a battery lead & check
for 13.5V

14
25) Installation Drawings
L E N
Mains
3amp
Supply
N/O
COM
N/C
Fault
N/O
COM
N/C
NewAlarm
SOV
BOV
+V
Beacon
Com
Z1
DC
SMS
Volt free contacts
toa BMS system
Beaconor
BeaconSounder
SeeItem 9in the
installation
Manual
COM
Alarm
SMSText
Messaging
Strobe
Tone
+V
Alarm
3core0.22mm12VDCcable
Zone 1 Water detection cable
SPSP
End of Line
Terminator
N/O
N/C
Shutdown
Valve 230VAC
+V
0V
A
B
SC
+V
0V
B
A
SC
Sig+
Sig-
Zone
4
Sig+
Sig-
Zone
3
Sig+
Sig-
Zone
2
Sig+
Sig-
Zone
1
Sig+
Sig-
Zone
4
Sig+
Sig-
Zone
3
Sig+
Sig-
Zone
2
Sig+
Sig-
Zone
1
L E N
Mains
3amp
Supply
L E N L E N L E N L E N
+V
0V
B
A
SC
Wired ina daisy chain format (one after the other)
DatacableYE00906.00100 or similar, connect
Red to +V, Black to OV, White toA&Yellowto B
Whitesignal cable
Red to Sig+, Blackto Sig-. This cable
can be extendedusing a2 core cable
such as Beldon 9502 but care must be taken
to ensure correct polarity is maintained.
Whitesignal cable
Red to DC, Blue to ZandBlack to Com.
This cable can beextended using a 3 core
cable such as Beldon9502but care must be
taken to ensure correct polarity is maintained
AlarmUnit StandardOutstation ShutdownValve Outstation
SMS
See Item 10 in the
installation
Manual
Connect all other
Outstations in a
daisy chain
Pattern
Outstation No.1
+V
0V
B
A
SC
BMRRelayOutstation
120R
Fit a 120R resistor between
terminals "A" &"B" inthe
furthers outstation from the
alarmunit see item15in the
installation manual.
Last Outstation
Volt free (dry) alarm
contact for use by BMS
or other data gathering
system