The 872C-D4NE12-A2 is a 2-wire DC proximity sensor with 10-30 VDC operating voltage and 100 mA current rating. Featuring a 12 mm diameter nickel-plated brass tubular housing, it offers 4 mm sensing distance in unshielded configuration with normally open (N.O.) contact. Compatible with both sink (NPN) and source (PNP) wiring, the sensor includes a 2-meter PVC cable. Note: Original factory warranty does not apply, but includes Beyondtech's warranty.