Wireless door sensor with lithium battery
4-5 battery life
working with various doors with stable performance

Main Feature:

Be suitable for metallic door/window for security purposeLithium battery for long battery life: 4-5 yearsAdopts SMT technology for stable performanceSupports wired output terminal for wired door sensor to send alarm panelLow power indicator; Sending low power signal to alarm panelPower Supply:DC 3.6V (1200mA lithium battery)Alarm Space: less than 20mmWireless transmitting distance:300-500mSize:73mm×40mm×19mm