Hydrogen sulfide detector by Sierra Monitor Corp.
November 4, 2013
The Model 4501-05 2-wire Hydrogen Sulfide Gas Detector from Sierra Monitor Corporation is a loop powered gas detector that provides the user with lower cost and easier installation and maintenance. This eliminates the need for separate power runs and associated power distribution and circuit protection for each device. Sierra Monitor Corp., www.sierramonitor.com, 800-727-4377.