The 440N-Z21SS2B is a non-contact safety switch from ALLEN BRADLEY's SensaGuard series, featuring a plastic rectangular actuator with 18mm sensing distance. This standard code type switch includes LED door indication/diagnostics and comes with a 10-meter black cable. Operating at 24VDC with 50mA current, the red switch is mountable for safety applications. Note: Factory warranty does not apply, but includes a 2-year Radwell warranty.