Banner Engineering STBVR81 Photoelectric Sensor

The Banner Engineering STBVR81 is a self-checking optical touch button in Banner’s STB safety family, designed for safe, hands-on control in industrial equipment. It operates from 20–30 V AC/DC (nominally 24 V in many installations) and draws about 75 mA, making it suitable for panel‑mount or machine‑side installation in control circuits. The device provides two normally open relay outputs, enabling straightforward interlock or signaling configurations in safety‑critical applications. STBVR81 is compatible with Banner’s STB safety components and is available in base 2 m cable configurations; longer cables are offered via suffixes (for example, 9 m with W/30) and QC (QD) variants require a mating cable. As part of the STB self‑checking line, the button uses optical sensing to detect finger presence, reducing mechanical wear while delivering reliable actuation for safety circuits. Typical applications include machine safety interlocks, press control stations, and automated lines where deliberate two‑hand actuation is required to start or reset equipment, helping safeguard personnel around potentially hazardous machinery. The part number STBVR81 designates the base 24 V safety touch button with two NO outputs, and it can be integrated with Banner two‑hand control kits like the Duo‑Touch family to implement compliant start‑up procedures in industrial automation environments.