The ABB 2TLA020051R0700, also known as the MKey9M, is a robust tongue-operated safety interlock switch designed for controlling the access doors and guards of machinery. Encased in a durable red polyester housing, it is built to withstand demanding industrial environments. This switch ensures that power is isolated from the machine when the guard is opened, preventing accidental startup and enhancing operator safety. The MKey9M features a rotatable head, offering versatile mounting options and eight different actuator entry points for maximum installation flexibility. It is an essential component for implementing reliable machine safety systems in compliance with international standards.