Hua Heng HY-ST5 Digital Speed Transmitter with LCD Display Precision RPM monitoring solution for industrial automation systems, designed to accurately measure rotational speed and direction of large rotating machinery. Technical Specifications Measurement range: 0-9999 RPM Input signal compatibility: RS-1 (passive) speed sensor, RS-2 (active) speed sensor, CWY-DO Φ8 eddy current sensor Gear disc teeth: Configurable according to gear disc requirements Measurement accuracy: ±1