Banner Engineering EM3T-1M Multi-Beam Optical Data Transmitter Emitter

The EM3T-1M Multi-Beam Optical Data Transmitter Emitter from Banner Engineering is a data‑transmission device that uses a modulated infrared LED to convey logic signals across a light beam to a compatible receiver, delivering a reliable link over distances up to about 60 meters (roughly 200 feet) when powered from 10–30 VDC. It comprises a scanner block (SBEM3) and a DC power block (PBT‑1M); the emitter LED is gated on and off by the data signal through an optical coupler inside the power block, so the emitter itself provides no separate electrical output to a load, and the scanner block connects to the power block via a standard 4‑pin connector. The system draws approximately 130 mA per sensor pair from a 10–30 V supply, and the emitter gate input should be driven with 10–30 mA (a suitable series resistor is recommended); the emitter can operate without a separate logic module, though many installations pair it with an LM3 logic module or MP‑8 multiplexer for larger arrays. This product is intended for data transmission applications rather than safety or personnel protection, and Banner’s MULTI‑BEAM systems are commonly used with overhead cranes, rotary index tables, or other moving machinery where data can be carried across the light beam to a receiver such as the R1T3.