The digital multi meter is a CAT IV 600 CAT III 1000 Volt rated auto ranging true root mean square (TRMS) digital multi meter that measures up to 10 Amp AC and DC current via the test leads in series with the load. It measures up to 1000 Volt AC and DC, LoZ (low impedance) AC Volt, frequency, resistance, continuity, capacitance and diodes via test-leads and measures temperature (deg F/deg C) via a K-type thermocouple. It's capable of detecting the presence of voltage between 40 - 600 Volt via a non-contact sensor in the top center of the meter. It's display can be backlit. The unit uses an illuminated red LED in the center of the meter and emits audible tones to notify when voltage is above 30 Volt, when continuity is detected and when the NCV senses voltage within its set range.