A proximity switch is a device which causes a switching action without physical contact. SCHMERSAL proximity switches manufacturers respond to targets that come within the active range of their generated sensing fields. These units are completely self-contained, and house a field professional generator, professional amplifier, and other necessary circuitry to accomplish electronic switching.
The units are all solid state and have no moving parts that can wear out. The electronic switches are not susceptible to contact contamination, contact erosion, or material transfer as are mechanical switches.
Their service life, within their specified ratings, is virtually unlimited. The switching is insensitive to vibration, and is positive (full step function) without chatter, regardles of how slowly the target approaches or recedes from the sensor
