The 440G-LZS21UTRH is a GuardLock safety interlock switch featuring power-to-release mechanism with 2 N/C safety contacts and 1 N/O auxiliary door contact. It operates with 24VDC solenoid voltage and includes a 6-inch pigtail cable with M12 8-pin quick disconnect connector. Note: Factory warranty does not apply, but this unit comes with Radwell's 2-year warranty coverage.