UNI-T UT139B multimeter

The UNI-T UT139B is a professional-grade digital multimeter designed for accurate measurement of voltage, current, resistance, capacitance, frequency, and temperature. With true RMS measurement and a CAT II 1000V / CAT III 600V safety rating, it is ideal for electrical troubleshooting, maintenance, and laboratory use.

Advantages

True RMS for accurate AC measurements, auto-ranging, large backlit LCD display, data hold, relative mode, and auto power-off. Includes a built-in flashlight and non-contact voltage detection (NCV) for added safety.

Suitable for

• Electricians and technicians
• Electronics repair and hobbyists
• Automotive diagnostics
• Educational labs

Key specifications

• DC voltage: 200mV/2V/20V/200V/1000V ±(0.5%+2)
• AC voltage: 200mV/2V/20V/200V/750V ±(0.8%+3)
• DC current: 200μA/2000μA/20mA/200mA/10A ±(0.8%+2)
• Resistance: 200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ/200MΩ ±(0.8%+2)
• Capacitance: 20nF/200nF/2μF/20μF/200μF/2mF/20mF ±(4%+5)
• Frequency: 20Hz/200Hz/2kHz/20kHz/200kHz/2MHz/20MHz ±(0.1%+3)
• Temperature: -40°C~1000°C ±(1%+3)
• Display: 6000 counts, backlit
• Power: 2x AA batteries (included)
• Weight: 350g
• Dimensions: 180x87x47mm

Recommendations

For reliable and precise measurements, the UNI-T UT139B is an excellent choice for both professionals and DIY enthusiasts. Its robust safety features and versatile functions make it a valuable tool for any electrical task.