The PRX-100 series is a line of high performance, moisture resistant proximity switches designed for use as a safety switch. Made from tough Noryl material, the PRX-100 series are UL 508 listed, corrosion resistant, and have no standby power requirements or moving parts delivering a truly high performance switch. It is designed for long life and easy installation in a variety of applications. The PRX-300 series offers a line of cost effective, high performance, reed switch stress relief technology for use as safety switches. Made with a robust glass filled Nylon housing, the proximity switches are naturally corrosion resistant and are UL pending with no standby power requirements or moving parts. These are designed for long lasting performance and are easy to install.