Description:<br>  <br> Home Window Door Entry Burglar Security Anti-theft Alarm System Magnetic Sensor  The Security Door and Window Defender Alarm is intended for use as a wireless alarm for windows and doors. The alarm is triggered after an entry-opening and\/or a window. The alarm is suitable for home， office indoor use， not for balcony where has insolation or rain.<br> Features: <br>  <br> 1. 100% brand new， high quality. 2. Compact， wireless， easy to install. 3. Low power consumption， lasting one year. Free to change batteries frequently. 4. Powered by 2 pieces of AAA alkaline batteries. (Batteries are not included in the pack.) 5. Low power remind with LED indicator. 6. Super loud alarm of 105dB， scare thief away. 7. Support doorbell function， doorbell function. 8. Magnetic sensor， door and window motion detector. 9. Keep the distance between device and magnetic shorter than 10mm， and arrow aims to each other. 10. Make sure one install in door\/window， another one install in door\/window frame， that to let them separate when the door\/window is opening.<br>  <br> Specification:<br>  <br> Working Temperature: -10 - 60 C Working Humidity: below 80%<br>  <br> Package includes: <br>  <br> 1 x Door Magnetic alarm 1 x Remote control<br>  <br> Details pictures: