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 system provides a simple and convenient way to record up to 340,000 equipment on/off cycle changes and uses graphing and analysis software to convert recorded data into time- and date-stamped graphs. The unit can be used in a broad range of building performance monitoring applications, including HVAC/R systems diagnostics, compressed air systems monitoring and general troubleshooting of motors, pumps and fans. The logger quickly and securely attaches to motor housings via built-in rare earth magnets, without any wiring, eliminating the need for equipment lockouts. A large LCD visually confirms operation and a signal strength indicator ensures proper placement. The system uses HOBOware® software, enabling users to plot and analyze equipment runtime data in a few simple steps.