100% brand new, high quality Suitable for home, office indoor use, not for balcony where has isolation or rain. Compact, wireless, easy to install. Low power consumption, lasting one year. Powered by 2 pieces of AAA alkaline batteries. (Batteries are not included in the pack.) Low power remind with LED indicator Super loud alarm of 105dB, scare thief away Magnetic sensor, door and window motion detector. Keep the distance between device and magnetic shorter than 10mm, and arrow aims to each other. 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. Password release alarm Working Temperature: -10 ~ 60°C Working Humidity: below 80%Please note: This is a magnetic door alarm，Not to greet guests doorbell。

• These sensors are used to protect the opening of both doors and windows。
• can help you focus on your child whether to open the Windows and doors or cabinet ensure the safety of children
• If a burglar opens the protected door or window, a magnetic switch inside the sensor, will trip, which sets off the security system. Super loud alarm of 105dB, scare thief away
• Install one at every entrance to make sure your home is protected. With high reliability, frequency stability, low consumption, strong penetrating power and other characteristics;
• It will work with alarm systems, compatible with most standard security system. alarm,doorbell,Closed remind，3-in-1 design intimate

These sensors are used to protect the opening of both doors and windows。GetTen®