Onset Computer’s HOBO UX90 motor on/off logger is a matchbox-sized, LCD-display data logger for monitoring run times of motors, pumps, compressors, and other equipment. The logger records up to 340,000 equipment on/off cycle changes and uses analysis software to convert the recorded data into time- and date-stamped graphs. The logger can be used in a range of performance-monitoring applications, including diagnostics, monitoring, and general troubleshooting of motors, pumps, and fans. The HOBO UX90 attaches to motor housings via built-in rare earth magnets without wiring and eliminates the need for equipment lockouts. A large LCD visually confirms logger operation, and a signal strength indicator ensures proper logger placement. The accompanying software enables users to plot and analyze equipment run-time data with minimal steps.