Dahua HY-SA21A-W2(868) Wireless Smoke Alarm / N/A

Characteristics Alarm mute: Yes Decibel alarm devices: 90 dB Suitable for indoor use: Yes Light alarm: Yes Maximum range: 1000 m LEDs: Alarm, Fault, Power Bandwidth: 868.3 MHz Mounting type: Surface mounted Interconnectable: No Housing material: ABS Product color: White Connection method: Wireless Sensor Type: Photoelectric Reflectance Sensors Power Compatible battery types: CR123A Supported battery type: CR123A Battery type: Lithium Battery life: 3 years Power source: Battery Voltage: 3V Low battery indicator: Yes Weight and dimensions Product weight: 140 g Diameter: 9.8 cm Product height: 43.1 mm Working conditions Temperature range (operation): -10 - 55 °C Relative humidity range: 0 - 95% Sustainable development Certificates of conformity: CE