- Automatic Self Test: Smoke chamber is tested every 40 seconds and unit bleeps if a fault is detected.
- Automatic reset facility in that when smoke clears from the sensor the smoke alarm will reset automatically.
- Volt free relay contacts - Normally Open and Normally Closed rated to 24 Volts/1 amp resistive.
- Built in sounder giving a minimum sound output of 85dBA at 3 metres. Frequency is in the range 2200/2800Hz.
- Power on LED flashes every 40 seconds to confirm integrity of power supply.
| - Dual Ionisation Chamber, with corrosion resistant electrodes. Sensitivity conforms to BS5446: Pt.1: 1990.
- The diameter of piezo disc in the sounder to measure at least 40 mm, and to have wire contacts soldered directly on to the piezo disc.
- The sounder to include a resonator or "trumpet" at least 30 mm in length and reaching to lid of the outer casing in order to amplify the sound.
- Airspeed- No false alarms up to 22mph.
- Power supply - 10.2 to 14 Volts DC normally supplied by compatible control panel.
- Standby current: 150 microamps (max). Alarm current: 60 mA(max), 30 mA(min)
- Ambient Temperature Range: 4C to 40C. Humidity Range: 0 to 90 % relative humidity
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