Standalone wired optical smoke sensor

Model Number:JS-SD28 Optical standalone smoke detector 1. Standalone surface mounted, easy operate 2. Built-in IC card, stable performance, high sensitivity 3. Apply optical smoke test room 4. With buzzer, alarm independently 5. Simulate alarm test 6. Low voltage alarm when it less than 6.8V Technical Parameters 1. Working volatage:9V 2. Static current: ≤10uA 3. Alarm current: ≤12mA 4. Low power alarm 5. Alarm volume: ≥85dB 6.Temperature range: 10~50°C 7. Humidity: ≤95%RH 8