Autonics BTF30-DDTL Ultra-Compact Photoelectric Sensor: Complete Technical Guide

29 Januari 2026

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

The Autonics BTF30-DDTL is a 3.7 mm-thick flat photoelectric sensor in the BTF series — diffuse-reflective type, Light-ON output, 12–24 VDC supply — the class of sensor that disappears into a machine edge where a cylindrical M18 would never fit. Three complete kits arrived new in factory bags on 2026-01-29, each with bracket, screws and the BTF-series manual, made in Korea, 1-year warranty.

What the box sheet says

Item	Value on label
Model	BTF30-DDTL
Equipment	PHOTO SENSOR
Power	12–24 VDC
Series	BTF — 3.7 mm flat photoelectric sensors
Date code	ZH29R
Certifications	CE, UKCA, RoHS, EAC
Origin	MADE IN KOREA (Autonics)

The suffix decodes the job: DD for the 12–24 VDC supply, T for the diffuse-reflective optical layout (no reflector or receiver unit needed), L for Light-ON — the output conducts when it sees the target, not the background.

BTF30-DDTL kit with manual — The kit as packed: sensor, coiled cable, L-brackets, screws — all on the BTF Series instruction manual (3.7 mm Flat Photoelectric Sensors, TCD210040AB).

The sensor

BTF30-DDTL sensor face — The sensing face: red translucent optical window with OPR and STB indicator windows, BTF30-DDTL molded into the housing, two mounting holes on 20 mm centers.

BTF30-DDTL with bracket — The kit flat: sensor, cable, bracket pair with screws — the L-brackets let the thin body mount edge-on to a machine frame.

Video: the kit turned on the bench — face, cable and bracket in turn.

Full kits

BTF30-DDTL three kits bagged — All three kits bagged with manuals — same ZH29R date code across the lot.

BTF30-DDTL cable detail — Cable end: blue, brown and black conductors plus the braided shield, stripped — supply, output and 0V with shield to ground per the manual.

BTF30-DDTL bracket close — Bracket and screws close-up with the sensor behind — the M2 hardware seats the 3.7 mm body without standoff shims.

Fitting notes

Flat sensors live where space is the enemy: inside slides, on guide rails, along conveyor edges. The diffuse-reflective optical layout means no separate reflector, but also no immunity to a shiny background — aim the face at matte targets or use the STB indicator to find the stable zone during alignment. The Light-ON convention keeps PLC inputs consistent with most Autonics diffuse models; if your cabinet expects Dark-ON, swap the output polarity in the input card rather than fighting the sensor.