1、POWER:110VAC/220VAC/230VAC ( or 9V batteries or Rechargeable bettery patck)2、Working temperature:-40degree~80 degree 3、Alarm density: Carbon monoxide:EN-55022,EN-550244、INTERCONNECTING GAS DETECTOR (1)CIRCUIT FOR NORMALLY CLOSED RELY CONTACTS (2)CIRCUIT FOR NORMALLY OPEN RELY CONTACTS (3)Operating Frequency: 433 MHZ/315MHZ (optional)5、SIZE:163mm*87mm*40mm6、Weight:400g/pcs 7、PACKAGE size:65cmX46CmX39cm8、Quantity/BOX:100pcs9、CtnWei(kg):45kg10、Q`CTY/20`FT:27000pcs