www.ishn.com/articles/105414-wall-mounted-gas-monitor

CEA Instruments Series U wall mounted gas monitor
Wall-Mounted Gas Monitor
December 1, 2016
The SERIES U single and multichannel wall mounted gas monitors use unique, patented sensors that are highly specific, fast responding, poison resistant, and are unaffected by moisture or temperature changes. Sensors are available for Hydrocarbons, Freons, Ethylene Oxide, Alcohols, Diesel/Gasoline Vapors, Hydrogen, Ammonia, Sulfur Dioxide, Hydrogen Sulfide, Carbon Monoxide, Combustibles and many others gases. Ranges are available to detect these gases in the low ppm, high ppm, or %LEL levels without sensor damage.
CEA Instruments Inc., www.ceainstr.com, 201-967-5660