The detector adopts the refection principle of smoke particles that can reflect infrared light. The main circuit includes a MCU processing section, an infrared-emitting portion and an infrared receiving portion. Transmitting and receiving diodes are placed in the optical chamber which can shield stray light from outside interference, but does not affect the smoke getting into the detector. Usually when in a smoke-free environment, infrared signal is very weak. When smoke enters the optical chamber,due to scattering effect, the infrared signal increases. When the smoke concentration accumulated reaches to the MCU alarm level, the detector will flash warning lights and warning alarm, meanwhile sending alarm signal to trigger other devices which connected to it.
|Operating Voltage||9V battery(6F22) or DC 12V|
|Battery life||About 1 year|
|Power Indicator||Red LED|
|Alarm Indication||Red LED fast blink|
|Level of Sound||≥85dB/m|
|Operating temperature||-10°C~ +50°C|
|Operating Humidity||≤ 95 %RH|
|Alarm Output||sound & light alarm relay output(wired output), wireless output(315MHz or 433MHz)|
|Emission Distance||100m(open area)|
|Size||Φ106 mm x 59mm|
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