This switch has a heat sensor (usually a bi-metal) that is placed into the heat exchanger. When replacing a defective unit, please replace it with a control with the same-length sensor. The switches ...

Mechanical position and electrical circuitry meet in the no-nonsense limit switch. These cost-effective input devices excel in tough ... Polarity must be observed when wiring limit switches.

Essentially, each pnp transistor compares a reference voltage on the npn emitter with the voltage across the lower limit switch circuit resistors R4, 5 and 6, directing current to the led if the limit ...

Crouzet Switches' 83870-83880 series limit switches are precision snap-action switches, sealed in rugged housings that are used as position detectors.