Detailed Product Description: Gas and Carbon Monoxide Detector Model No:AK-200FC/F2 Trademark:Ankang Price/Payment:FOB Shenzhen / TT Standard:CE,EN 50291 Productivity:10000pcs/month Description: 1, Power: 110VAC/220VAC/230VAC ( backup batteries 3 AA alkaline batteries or Rechargeable battery patch) 2, Working temperature: -40¡æ~80 ¡æ 3, Interconnecting (1)Circuit for normally closed relay contacts (2)Circuit for normally opened relay contacts (3)Operating Frequency: 433 MHZ/315MHZ (optional) 4, Size: 163mm*87mm*40mm 5, Weight: 400g/pcs 6, Package size: 65cm*46cm*39cm 7, Quantity/Box: 100pcs 8, CtnWei(kg): 45kg 9, Q`CTY/20`FT: 27000pcs