The D4SLN3NFGD is a guard lock safety-door switch designed to secure machine guards and access doors. This model features a 6-contact configuration (2NC/1NO + 2NC/1NO), a resin head, and a 24VDC solenoid lock with a mechanical release mechanism. It includes a 1/2-14NPT conduit outlet, a terminal block for wiring, and a bright 24VDC orange LED for clear status indication. With a strong key holding force of 1,300 N, it is suitable for industrial applications requiring reliable interlocking to prevent access to hazardous areas until machinery has stopped.