Used to control THERMOWELL heating mantles or other resistive heating circuits (hot plates, heat tapes, water baths, etc). High capacity with constant power output despite large line voltage fluctuations. Does not vary voltage. 50/60 Hz. Model EB-1C: A cast aluminum case with gray, baked-on finish, satin SS face plate with flush-mounted receptacle and dial plate, pilot lamp (two lamps on model EB-1C), and a 3 ft, 3-wire power cord with U.S. plug.