The PNOZ XV2.1 is a safety relay produced by Pilz that monitors NOT-AUS buttons and protection doors. It has two safety contacts (S), one undelayed and one delayed. It can be connected to NOT-AUS buttons, protection door limit switches and start buttons. It also has an LED display for showing the channel 1/2 switch status, power supply voltage and start circuit. The delay time can be canceled by the reset button.
