<p>The Honeywell 1DM401 Safety Interlock Switch comes with choice of momentary, alternate push-pull or pull-to-cheat operation. Honeywell Safety Interlock Switch 1DM401 has push-on and push-off operation and has an expected mechanical life of about 1 million operations at 95% survival. Interlock Safety Switches include momentary and alternate actions and single or double-pole.</p> <p>Safety Interlock Switches have rugged snap-in panel mount design for easy installation. They are widely used in appliance door lights, door interlocks, stop/start switches, etc. </p>