Wireless Home Security Window/Door Sensor with Entrance/Exit Recognization

Front View Side View Back View This is a smart wireless door/window sensor with door close/open bi-directional detection and beeper remind. When door is open, sensor will send out 5 "Di di di di di" sounds and then transmit wireless door-open signal; when door is close sensor will send out 1 "Di" sound as remind and then send out door-close signal to control panel. When sensor housing is open illegally, it will also send out tamper switch signal to control panel. In a word, this is a smart door/window sensor with particular stability than similar sensor in the market. Inside Structure Mark: magnetic part to this side Briefintroduction -Super mini power -consumption design -Can recognize door open/close (For option) -With beeper remind (For option) -High capacity Lithium battery -Low voltage detection -Tamper switch detection -Self-check function (For option) Open slot SpecificationsPower: Li-battery 3.6V 1/2 AA (ER14250) Current:200m in open area Transmission frequency: 315MHz/433MHz(For option) Trigger space: 20mm Low voltage alarm: 3.1V Operation temperature: -10ºC/+55ºC Operation humidity: