Output signal switching device

An output signal switching device (OSSD) is an electronic device used as part of the safety system of a machine. It provides a coded signal which, when interrupted due to a safety event, signals the machine to shut down. It works by converting the standard direct current supply, usually 24 volts, into two pulsed and out-of-phase signals. The benefit of this is to avoid the possibility of a stray signal keeping the machine operating while actually in an unsafe condition.

This keyword could refer to multiple things. Here are some suggestions: