 Model: AK-200FC/X  Gas detected: Gas, LPG, H2  Size: 125mm*30mm  Working voltage: 220VAC/110VAC、12VDC-20VDC  Networking: wired networking（NO、NC）  Wireless networking mode: 315MHZ/433MHZ (2262 OR 1527)  Patent NO.: 200630155077.2  Working temperature: 0°-60°