EMASTIFF 433MHZ Smoke Detector Independent 85dB Sound Alarm Fire Smoke Sensor For Alarm System

Decription 1 This product is a photoelectric smoke detector whose principle is to detect fire by refracting infrared light by particles in the smoke 2 The circuit is mainly composed of infrared transmitting part and receiving part Place the transmitting tube and receiving tube in the optical labyrinth and the optical labyrinth can be shielded The interference of external stray light but does not affect the entry of smoke 3 In the smokeless state the receiving tube only receives weak infrared light 4 When smoke enters the received light signal is enhanced due to the scattering effect 5 When the smoke reaches a certain concentration the detector will output an alarm signal 6 In order to reduce interference and power consumption the transmitting circuit adopts pulse operation which can increase the service life of the transmitting tube 7 The product adopts unique structural design and photoelectric signal processing technology and has the functions of dustproof insectproof and external light interference 8 The design ensures the stability of the product The product reacts well to visible smoke produced by slow smoldering or bright burning Technical Parameters Working voltage DC9V 1 6F22 battery Battery Not Included Quiescent current ≤10uAAlarm current ≤15mAWorking temperature 10℃ 50℃Working humidity ≤95 RHAlarm mode sound and light alarm wireless outputTransmitting frequency 433MHzVerification code EV1527Launch distance 80M open distance Loudne