FDO400
Smoke detectors work according to the light scattering principle caused by smoke particles present in the air. The smoke detector features an automatic gain control function; a microcontroller calculates reading compensation to keep constant sensitivity and corrects any level increase due to dust depositing into the analysis cell. Smoke detectors should be installed in places protected against draughts which may divert the flow o f combustion particles and in places where the common activities performed do not cause the combustion of gases.
Supply voltage: 20 Vdc (modulated voltage from -15% to + 10%)
Average absorption at rest: 65 μA @ 20 Vdc
Alarm absorption: 23 mA @ 20 Vdc
3-colour LED: red alarm - green normal operation - yellow maintenance required - green
flashing with a sequence of yellow flashing system malfunction
Minimum reset time: 300 mS
Max relative humidity: 93%
Operating temperature: -10° ÷ +55° C
Material: ABS V0
Weight: 70 g
Dimensions: ø 90 x 31 (H) mm
Certified EN54 part 7, No. 1293-CPD-0189
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