Description

The TrueAlarm duct sampling unit detects the presence of smoke in air conditioning or ventilating ducts. Sampling tubes are installed into the duct and air is directed to a 4098-9714EA smoke sensor mounted in the housing. These duct housings provide the high reliability performance of TrueAlarm analog sensing featuring programmable sensitivity, consistent accuracy, environmental compensation, status testing, and monitoring of sensor dirt accumulation. The TrueAlarm Duct Sampling Unit require only two
wires for both communications and power.

Specifications
– Operating Voltage 18 to 40Vdc*
– LED Current 600µA**
– Air Velocity 1.5 to 20 m/s
– Relative Humidity 10% to 95% (n/cond)
– Operating Temperature 0 to +50°C
4098-9753 with auxiliary relay
– Relay Coil Voltage 18 to 32Vdc
– Quiescent Current 240µA @ 24Vdc
– Alarm Current 32mA @ 24Vdc
– Contact Rating 1A @ 28Vdc (pwr limit)
-Contact Rating 0.5A @ 120VAC (resist)
– ActivFire Listed afp-1354

* MAPNET II
** No impact on alarm current