The GasBoss*1100 is a breakthrough in economy and performance. A third the cost of others with similar specs, this unit is designed to serve industry and commercial businesses where budgets are tight and maintenance is minimal. This self contained unit houses an optical infrared source and solid state absorption analyzer, the electronics for providing 4-20mA and 0-1VDC analog outputs, plus a 110VAC power supply, two SPDT individually settable trip relays and a meter... all packaged in a 10x7x7" (254x178x178mm) dust/water proof fiberglass enclosure. Weight is about 6 pounds (2.7kg). Contacts are rated at 115VAC/1A. An alternate 12VDC input power can be supplied on special request. DC Version is shown.