This sound and light alarm unit is perfect for fire alarm systems. Utilizes a two-wire system for easy cabling. The main line terminates with two main wires, and power is supplied via a 12/24VDC power line. Choose from three distinct alarm tones to suit your preference. Features 6 built-in LEDs and a siren that emits a loud sound and rapid flashing to alert people to evacuate during a fire. Easy to use and manage, offering significant practical value. Specification: Condition: 100% Brand New Item Type: Sound and Light Alarm Color: Red Temperature Range: -10?-50? / 14?-122? Humidity Range: ?95% RH Operating Voltage: 12/24VDC Working Current: 20mA / 50mA Flash Intensity: ?1.2 Ws Flash Period: ?1.5S Audible Alarm: ?105Db Flashlight Lifespan: ?40000 (hours) Size: 134 x 115 x 48 mm /5.3 x 4.5 x 1.9 inches (L x W x H) Package List: 1 x Sound and Light Alarm 1 x User Manual