Smoke Detector, Smoke sensor, Smoke alarm Product Features DSP analyses technology Photoelectric chamber Dual LEDs for 360º visibility Easy installation and maintenance Magnet-activated sensitivity test switch Technological Parameter Operating voltage: 12VDC Static current: ≤8mA Alarm current: ≤35mA Working temperature: -10 ºC-50 ºC Working humidity: ≤95%RH Installation method: ceiling mounted Alarm output: NC and LED Dimension: ¢105mm x 54mm