Digital Multimeter Unit UT123D with Auto Range and Backlight, handheld measurement tool

The UNI-T UT123D smart digital multimeter is a compact and reliable measuring instrument suitable for household use, DIY repairs and professional tasks where space and portability matter. It automatically detects AC/DC voltage, resistance, diodes and circuit continuity; a manual mode selection button provides fast access to capacitance measurement. The EBTN display and CE/UKCA certifications ensure readable results and compliance with safety standards.

Advantages

Automatic signal recognition reduces the need for manual range switching, and the True RMS function provides accurate readings for non-sinusoidal waveforms. NCV/Live detection enables contactless voltage presence checks. The device is compact and lightweight for easy transport, features automatic power-off and Data Hold for convenience, and gives acoustic and visual alerts for voltage, continuity and low battery.

Key specifications

• Manufacturer: UNI-T
• Model: UT123D
• Power supply: 2 × 1.5 V batteries (R03)
• Display size: 44 mm × 26 mm (EBTN)
• Weight: 130 g
• Dimensions: 130 mm × 65 mm × 28 mm
• Measuring ranges and accuracy: DC voltage 600 V ±(0.5%+3); AC voltage 600 V ±(0.8%+3); DC current 10 A ±(1%+3); AC current 10 A ±(1.2%+3); Resistance 40 MΩ ±(0.8%+2); Capacitance 4000 µF ±(4%+5)

How to use

Insert two 1.5 V (R03) batteries and connect the test leads to the appropriate sockets. For most measurements rely on the multimeter’s automatic detection; press the mode button to switch to capacitance measurement when needed. Use the NCV/Live function to detect voltage without direct contact. Read results on the EBTN display and use Data Hold to freeze a reading. Observe all standard safety precautions for electrical measurement and disconnect power where appropriate before measuring resistance or continuity.

Recommendations

For safe and accurate measurements, verify battery level before use, keep the test leads in good condition, and avoid exposing the instrument to moisture or extreme temperatures. Use the UT123D within its specified ranges and consult the user manual for detailed safety instructions.