The Model T51 is a miniature dual-voltage, dual-frequency hour meter suitable for any ac-powered equipment. The device is designed as a suitable OEM component for medical, recording, test, or other equipment where predictive maintenance or time-in-use schedules are employed.

It features advanced electronics including a quartz crystal time base for accuracy in long-term electromechanical wheel-type indicators and to display up to 99999.9 accumulated hours. All components are housed in a weatherproof enclosure that is UL, CSA, and CE recognized. The unit measures 1.60 x 1.06 x 2.75 in.

The Model T51 is available in three styles for panel mounting or back panel installation, with 1/4-in. terminals or lead wire configurations. Accuracy is better than (۪.02 percent over the entire range. Operating temperature range is -40° to +185°F, and the unit is 90-240 Vac standard.