Offering complete Smoke Alarm systems like intelligent smoke detectors, heat alarm detector,sounders, manual call points, control panels, gas leakage detector, gas alarm conventional 2 wire fire alarm systems, analogue addressable fire alarm systems. e smoke detector Technical Specifications: 1) Alarm Dimensions:3.9″dia., 1.6″ht. 2) Working Current : a)Static Current:Max 12μA b)Alarm Current: Max 15mA 3) Operating Voltage: DC9V 4) Audio Alarm : 85 Db at 10 feet. 5) Temp Range :14( -1Odeg ) to147( 60deg) 6) Humidity Range: ≤95%RH(Temp: 40 deg) 7) Battery : 9V battery back-up for at least 1 year. 8) Protection area : 6 m high , 60 ㎡. 9) Latching alarm indicator remembers which unit initiated an alarm. 10) Smart sense system helps reduce unwanted alarms. 11) Single button test/Silence. 12) Perfect mount system : Gasketless base allows for easy installation & positioning. 13) Dust cover keeps alarm clean during construction. 14) Test button: electronically simulates smoke condition ,causing the unit to alarm. 15) Alarm reset: automatic when smoke clears . Press test/silence button to silence alarm manually. 16) Sensor: Photoelectric technology is more sensitive at detecting large particles which tend to be produced by smolding fires before bursting into flames.