The Omron E3T-FD13 is a diffuse photoelectric sensor in the E3T series, producing a PNP light-ON signal from a 12–24 VDC supply. Its 30 mm maximum sensing range and 1 msec response suit close-proximity object detection. IP67 rating, plus built-in output reverse polarity, short-circuit, and supply reverse polarity protection — three layers of wiring fault tolerance that keep field replacements straightforward. CE marked. The prewired 2 m cable terminates in bare wires, so no separate connector to source. Indicator lights are included for local status.
Sibling Comparison — E3TFL112M
The E3TFL112M is the same E3T series but with NPN output and 15 mm max range; FD13 has PNP and 30 mm range; both are diffuse reflective, IP67, with 2 m cable. FD13 body is taller (24 mm vs 3.5 mm) and has right-angle sensing face, so mechanical footprint differs.
Right-angle face; light-ON only. 12 mm width suits tight spaces.