1. Model: AHC-3 2. Sensor: Electrochemical senor(Japanese) 3. Gas detected: carbon monoxide 4. Size: 115mm*70mm*40mm 5. Working voltage: 220VAC /110VAC, 12VDC-20VDC 6. Additional function: can work with solenoid valve or manipulator or exhaust fan 7. Networking: wired networking(NO, NC) 8. Wireless networking mode: 315MHZ/433MHZ (2262 OR 1527) 9. Alarm level: 150 PPM (Chinese Standard) 10. Patent No.: 200830103203.9