Sounder Control

The Sounder Control Unit is used to control the operation of a zone of conventional sounders and report their status to the control panel

  • Allows sounders to be operated continously or be pulsed; 1 second on, 1 second off
  • May be synchronised with loop sounders


Operating voltage 17–28V DC
Maximum current consumption at
24V		 switch-on surge, max 100ms 2.6mA
quiescent, 10kΩ EOL fitted 1.95mA
sounders operated
 1.7mA
fault (yellow LED on)
 3.6mA
sounder line short circuit
 2.8mA
Maximum continuous current 1A
Maximum switching current 3A
On resistance 0.2Ω
Switch input monitoring voltage
(open-circuit condition)		 9–11V DC
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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