... 3.Simple to mount 4.High switching performance KTO 011: Thermostat(normally closed), contact breaker for regulation heaters. ... (normally closed), contact breaker for regulating hearters.KTS 011: Thermostat (normally open), contact maker for regulating of ... °C(-49 to 1760 F protection type: IP20 thermostat,dual thermometer,stego thermostat,thermal controller, temperature controller,bimetal thermostat, ...