An omnipolar Hall-effect tachometer is a single-channel speed sensor that detects magnetic fields with full-polarity response, outputting clean voltage pulse signals with strong anti-interference capability. Built with an integrated stainless-steel housing, it provides durable, non-contact speed measurement for gears or rotating components, offering simple, reliable, and maintenance-free operation. Threaded installation and customizable specifications make it well-suited for harsh industrial environments.