Overview: This item is Fire Alarm Siren, it needs used with the alarm host. When the alarm host detects fire, it will activate the alarm siren.The siren will send out both loud sound and quick flash to remind people from the fire. It is suitable to be used in office,shop,hotel,restaurant, etc. Features: *Three different tones, you can choose any one of them according to your need. *Super loud sound, the alarm is up to 100dB. *Built-in 2pcs LEDs, super bright when send out alarm signal, effectively remind people flee from fire. *The siren will send out both loud sound and quick flash to remind people from the fire. *Using ABS fire-proof material. Suitable to be used in office,shop,hotel,restaurant, etc. Specifications: Rated Voltage: DC Rated Current: 100mA Voltage : DC 9-24V Alarm SPL: up to 100dB Tone Setting: Three tones Material: ABS Color: Red Working : -10Celsius- 50Celsius Item Size: Approach. 12.3 * 9.7 * 4.8cm(L*W*H) Item Weight: Approach. 121g / 4.3oz Package Information: Package Size: Approx. 15.2 * 12.2 * 6.3cm / 6 * 5 * 2.5in Package Weight: Approx. 208g / 7.3oz Package List: 1* Fire Alarm Siren 1* Bracket 1* Bag of Mounting Screws 1* User Manual ree different tones, you can choose any one of them according to your need. *Super loud sound, the alarm is up to 100dB. *Built-in 2pcs LEDs, super bright when send out alarm signal, effectively remind people flee from fire. *The siren will send out both loud sound and quick flash to remind people from the fire. *Using ABS fire-proof material. Suitable to be used in office,shop,hotel,restaurant, etc.