Sound & Light Fire Alarm Warning Strobe Horn Alert Safety System Sensor for Home Office Hotel Description: The sound-light fire alarm apparatus are one kind terminal device for alarm, it is fit for the sound & light alarm when the fire happens. Suitable to be used in office, hotel, restaurant and so on. Features: Selects two or the four-wire system wiring method, the main line end receives two main lines, not polarization, power source termination to DC24V power line. Three kinds of sound alarm: ambulance / sound of police car / sound of fire engine. Built-in LEDs, super bright when send out alarm signal, effectively remind people flee from fire. The alarm will send out both loud sound and quick flash light to remind people escape from the fire. Using ABS fire-proof material. Suitable to be used in office, hotel, restaurant and so on. Specifications: Condition: Material: Plastic Temperature Range: -10℃~50℃ Humidity Range: ≤90%RH Operating Voltage: DC 24V Rated Current: 300mA Sound Pressure: 120+/-3(dB/1m) Working Current: 100-170mA Flash Intensity: ≥1.2Ws Flash Period: ≤1.5S Flash Times: 150(times/minute) Life of Flash Light: ≥40000 (Times) Dimensions: Approx. 16 x 11.7 x 5.5cm / 6.3 x 4.61 x 2.17in Package Weight: Approx. 250g Package Included: 1 x Sound-light Fire Alarm 2 x Screws Installation: 1. At first, get into two hole well in the install place(wall), the hole distance is 65mm, installs the plastics and swells Stopper, (if the wall is the wooden material, can be by attacking the screw and fastening by oneself directly). 2. Connect DC24V power and network link, and set up a kind of alarm sound well according to the need. 3. Specialize in screw by oneself with two, fix the alarm to install in the place, tighten the screw alarm.