Product description:

Semiconductor sensor 
Power: 110VAC/220VAC/230VAC , 9V-20VDC 
Working temperature: -10degree~60 degree 
Alarm density: Coal gas: 1000~5000ppm, Liquid petroleum gas: 1000~10000ppm, natural gas: 1000ppm~5000ppm 
Interconnecting gas detector: 
(1)Circuit for normally closed rely contacts 
(2)Circuit for normally open rely contacts 
(3)Operating Frequency: 433 MHZ/315MHZ (optional) 
Start warm-up current: ≤60MA

Working voltage: 6VDC Static current: ≤40MA 
Alarm output: normally open and closed signal, control exhaust fan, electrical magnetic valve signal. 
Size:125mm*30mm 
Weight: 228g/pcs 
Package size: 58.5cmX42.5CmX30.6cm