Zone Monitor

The Zone Monitor powers and controls the operation of a zone of up to 20 conventional detectors from Shield.


Operating voltage 17–28V DC
Zone voltage
 (Loop voltage 22V) 19V±1V
Loop voltage < 22V) Loop voltage –1.5V
Maximum current consumption at
24V DC		 (5.1k EOL)
switch-on surge, max 150ms 3.5mA
quiescent load 4mA + detector
alarm 11mA
(19mA when increased
current enabled
short-circuit)		 11mA
Surge Current
 2.5 mA
Maximum Alarm Current
 5 mA (LED on)
Stabilisation time on power-up 4 seconds
Maximum capacitor on
zone terminals		 50μF
Operating temperature -20°C to +70°C
Humidity
 0–95%
IP rating 54
Dimensions (L x B x H) 150 mm x 90 mm x 48 mm


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