Installation options are flexible and convenient.Generally installed in the wall or doorway or balcony and other places by using screws, the installation height of 2.5 meters or more. When someone breaks in illegally, the alarm horn issue a three alarm to let you know where the accident happened. 12V 130 dB treble speaker,far volume,and dual tone, can be worked with various alarm connection. ABS fire-retardant shell,widely used in alarm host,gas leakage alarm, infrared peripheral alarm equipment, etc. Strong and , small and light, long service life., Manufacturer: Akfldms