Conventional Optic Smoke Detector With Relay Output Function is a safety fire detection. It can be link with alarm system to prevent fire. Features: 1. Strong adaptability for circumstance 2. SMT Design, High stability 3. 9-35V DC Wide voltage operating range 4. Low standby currency 5. Power supply non-polarized input 6. Twin LED for 360�° visual 7. Flashing LED power indicator 8. Remote LED indicator output 9. Metal shield, anti-electromagnetic interference