Smart Window and Door Sensor Door Sensor Detector 433mhz Door and Window Alarm ,for Home Hotel

Has dual functions of emergency switch and electromagnetic doorLow power consumption and long battery lifeLow voltage fault monitoring report 2262\/1527 integrated circuitWidely used in household, commercial doors, windows and anti-theft alarm systemsEmission distance:2 120m(open field)Working voltage: DC3V (button battery)Standby current: S 10uAWorking current:Less than 15mAWorking temperature:-10C~+50CEmission distance:2 120m(open field)Triggering distance:25-35mmUnder voltage monitoring:2.20.2VEmission frequency:315MHz\/433MHz\/868MHzBattery life: 12 mounthsColour:WhiteMaterial:plasticPackage Contents:1 x Door and Window AlarmOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.