The Honeywell 2455R-01000072 is a manual reset, normally open limit switch. This product is designed for operating temperature of -13°F to 275°F (-25°C to 135°C). It can be used for simple temperature sensing applications, such as monitoring boilers, furnaces and other heating systems. The switch has a single set-point adjustable knob and can be used with various electrical connections. It has a maximum current rating of 10 amps and is certified to UL listed and CSA certified.