... Description Passive direct read type gas meter techinical specificationsTechnical Function:1,the system of meter dont be electrified,only when ... 1200Bps3,the space of data transmission:centralized recorder to gas meter≥300m,centralized recorder to computer≥1000m4,standard:DL/ ... power supply:DC12V±10%6,passive direct read type gas meter input electric current≤10mm Centralized recorder input electric ...