Boat engine hourmeter
RH110 Cruzpro

The CruzPro RH110 Digital RPM/Engine Hours/Elapsed Time gauge is a four digit digital display of engine RPM, total engine hours, elapsed trip time and maximum r.p.m. seen. The RH110 works with any engine and can be driven from a wide range of signal frequencies and amplitudes. Front panel calibration is provided for spot-on accuracy to within 1 RPM. A seperate engine hours countdown alarm can be set to warn you to perform needed maintenance every set number of hours of engine running time. When activated, the RH110 built-in 85 dB alarm will sound and the display will flash. Five levels of backlighting can be selected and all set-up, calibration and alarm values, are saved to non-volatile memory. Data is output on an NMEA 0183 compatible serial data line or that screw terminal can be programmed as an external alarm output.
All constants and calibrations are pre-set during manufacture but you may alter these settings to suit your particular needs. Calibrations can be altered over a wide range using the front-panel switches to compensate for different alternator pulley diameters, gear tooth sensors, magnetic and optical sensors, etc. Any engine is easily handled.