Description: The sound and light fire alarm device is a terminal alarm unit, suitable for audible and visual fire alarms. Ideal for offices, hotels, restaurants, etc. Features: Selects two- or four-wire wiring. The main line end receives two main lines, no polarization, connects to DC24V power supply. Three types of 'Sound Alarms': Ambulance / Police Car sound / Fire Truck sound. Built-in LEDs provide super bright alarms, effectively reminding people to evacuate. The alarm emits both a loud sound and a fast flashing light to alert people to fire escape. Uses high-quality fire-fighting materials. Suitable for offices, hotels, restaurants, etc. Specifications: Condition: 100% Brand New 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: ≥1.2W Flash Period: ≤1.5s Flash Time: 150 (times / minute) Flash Light Lifespan: ≥40000 (times) Dimensions: Approx. 16 x 11.7 x 5.5 cm / 6.3 x 4.61 x 2.17 inches Package Weight: Approx. 250g Package Includes: 1 x Sound and Light Fire Alarm 2 x Screws Installation: 1. Mark two hole positions on the wall (65mm apart), install plastic anchors, and fix the device. 2. Connect the DC24V power and network link, and set the alarm sound type as needed. 3. Secure the alarm to the installed position using the provided screws.