Wireless Door and Window Sensor

Wireless Door & Window Sensor with Emergency button           FEATURES :           1. ezteco adopted  special low consumption CPU           2 .Door / window sensor with emergency button           3. Wireless emitting range : 200 m in the open area            4. Wireless emitting frequency : 433 Mhz           5. Working volatge : 4.5V with 3 Pcs of Alkaline Battery ( AAA LR03 1.5 V )           6. Power consumption : ≤ 5uA Static / Current emitting :  ≤ 15mA Alarm