1. Model NO.:AK-200FC/C8 2. Gas detected: Carbon monoxide 3. Working voltage:AC220V/AC110V、12VDC-20VDC 4. Additional function：Linkage exhaust fan 5. Networking mode：Wired network connection function:(NO、NC) 6. Wireless network model: 315MHZ/433MHZ (2262 OR 1527) 7. Product patent No：200830104030.2