This part is the AEMC Model 1375 Dual-Channel 4-Digit Digital Multimeter, which is a hand-held, battery-operated instrument used for measuring AC/DC voltage, AC/DC current, resistance, temperature and frequency. It features a dual-channel display which allows two measurements to be seen simultaneously, a bar graph for viewing trends, a large back-lit LCD display, selectable auto and manual ranging, a data-hold feature, relative mode, and a MIN/MAX/AVG recording function. The 1375 is designed for long-term use and is CAT III/IV rated with easy one-button access to safety functions like auto-zeroing and continuity testing.