The Metrix ST5491E Indicating Vibration Transmitter is a robust, case-mounted velocity vibration sensor with built-in signal conditioning and an easy-to-read local indicator, providing a loop-powered 4–20 mA output proportional to machine vibration. It mounts directly to equipment and delivers reliable velocity measurements for trending, alarming, and integration with PLCs, DCSs, or other 4–20 mA systems.