True RMS Multimeter DM91A

DM91A multimeter features manual and automatic operation modes. It supports DC/AC voltage measurements up to 600V and provides accurate current measurements from 999.9μA to 10A. The device features True RMS for accurate AC measurements and includes Live/Neutral identification. It supports non-contact voltage detection, automatic continuity and diode checks, and small battery testing (1.5V/9V). A built-in blown fuse alarm increases user safety. The high-resolution display provides 10,000 counts and complies with EN61010-2-033, CAT III 600V safety standards. 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.