The Omron E3T-FT13 is a through-beam photoelectric sensor set — transmitter and receiver in a compact PBT rectangular body, prewired with a 2 m bare-wire cable. It sees a 1.3 mm opaque object across 500 mm, switching PNP outputs on light reception. Supply is 12-24 V DC, load max 50 mA. Response time is 1 msec; the red LED indicator helps alignment on the rail.
Wiring & Mounting
The 2 m bare-wire cable terminates in three conductors: brown for supply, blue for common, black for PNP output. Right-angle face orientation lets it sit tight against a mounting bracket. The 12 mm width and 4 mm depth fit into panel cutouts that would otherwise take a larger barrel sensor.