E3JM-R4M4-G is an inductive proximity sensor manufactured by Omron. It features a sensing range of 4mm, a sensing distance of 3mm, and a 12 to 24 volt DC power supply. It is a two-wire type, meaning it requires two wires for power and switching on/off. The sensor is IP67 rated for dust resistance and water resistance and is designed for use with PLC, DIN Rail mountings, and direct mounting to a machine surface.