gas alarm,gas detector,Gas leakage detector

1\Hot wire type sensor
2\Power:110VAC/220VAC/230VAC \9V-20VDC
3\Working temperature: -10degree~60 degree
4\Alarm density: Coal gas: 1000~5000ppm, Liquid petroleum gas:1000~10000ppm, natural gas:1000ppm~5000ppm
5\Interconnecting Gas detector  
  (1)Circuit for normally closed rely contacts
  (2) Circuit for normally opened rely contacts
  (3)Operating Frequency:433 MHZ/315MHZ (optional)
6\SIZE:115mm*71mm*43mm
7\Weight:228g/pcs
8\PACKAGE size:58.5cm*28.5cm*53.3cm
9\Quantity/BOX:100pcs
10\CtnWei(kg):28kg
11\QTY/20`FT:35200pcs