Auto Digital Multimeter DM90A

DM90A Automatic digital multimeter for DC/AC voltage tests up to 600V. It features resistance, capacitance, continuity, frequency, duty cycle and diode tests. The DM90A complies with safety standard EN61010-2-033, measuring category CAT III 600V. It also features data hold, K-type thermocouple capability, a large backlit display and an auto-off feature that turns the unit off when not in use. The K-type thermocouple capability measures temperatures from -20°C to 1000°C. Frequently Asked Questions Why does my multimeter show “OL” or “1”? When your multimeter displays “OL” (Over Limit) or “1”, it usually means the measurement exceeds the selected range or the circuit is open. For example, if you’re measuring resistance and the probes aren’t touching anything (or measuring an open circuit), your multimeter will show “OL” or “1” to indicate that the value is out of range. Switching to a higher range or reconnecting the probes usually resolves the issue. Yes, many digital multimeters come with a built-in temperature measurement function. These models typically include a K-type thermocouple probe that allows you to measure temperatures in Celsius or Fahrenheit. Check your multimeter’s specifications to see if it supports this feature. It’s especially useful for HVAC technicians or electronics troubleshooting.