1、Independent super high-pitched horn design, ultra loud alarm sound. 2、It can issue arming and disarming response sound, provide high-pitched help and deterrence functions used in combination with host, door magnet, emergency button, and etc. 3、With tamper function, periodically perform self-function status detection and report performance status to the alarm host. 4、Good rust resistance, long service life, compact and lightweight for convenient use. 5、Beautiful appearance, loud sound, suitable for installation in corridors, windows and other places. Features: Independent super high-pitched horn design, ultra loud alarm sound. It can issue arming and disarming response sound, provide high-pitched help and deterrence functions used in combination with host, door magnet, emergency button, and etc. With tamper function, periodically perform self-function status detection and report performance status to the alarm host. Good rust resistance, long service life, compact and lightweight for convenient use. Beautiful appearance, loud sound, suitable for installation in corridors, windows and other places. Specification: Condition: Brand New Material: ABS Color: White Rated voltage: 12VDC Rated current: 320/600 /1200 mA Output power: 15W / 20W Alarm volume: 105~123 dB Shape: Cylinder Diameter: Approx.5cm/2in Height: Approx.5cm/2in Package List: 1 * Siren