UNI-T UT139A True RMS digitale multimeter 6000 counts, CAT III 600V

The UNI-T UT139A is a professional-grade True RMS digital multimeter designed for electricians, technicians, and hobbyists. With a 6000-count display and a wide range of measurement functions, it delivers accurate readings for voltage, current, resistance, capacitance, frequency, and temperature. Its CAT III 600V safety rating ensures reliable use in industrial and residential environments.

Advantages

True RMS measurement ensures accurate readings on non-linear loads. The built-in NCV (Non-Contact Voltage) detection enhances safety by identifying live wires without direct contact. Auto-ranging simplifies operation, while the backlit display and data hold function make it easy to use in dimly lit areas.

Suitable for

• Electrical troubleshooting and maintenance
• HVAC and appliance repair
• Automotive diagnostics
• Educational and laboratory use

Key specifications

• Display Count: 6000
• True RMS: Yes
• DC Voltage Range: 60mV to 1000V
• AC Voltage Range: 60mV to 750V
• DC Current Range: 600µA to 10A
• AC Current Range: 600µA to 10A
• Resistance Range: 600Ω to 60MΩ
• Capacitance Range: 9.999nF to 99.99mF
• Frequency Range: 10Hz to 10MHz
• Temperature Range: -40°C to 1000°C (-40°F to 1832°F)
• Diode Test: Yes
• Continuity Buzzer: Yes
• NCV Detection: Yes
• Data Hold: Yes
• Backlight: Yes
• Auto Ranging: Yes
• Safety Rating: CAT III 600V, CAT II 1000V
• Power Supply: 2 x 1.5V AA Batteries

Recommendations

For best results, use with high-quality test leads and ensure batteries are fresh. Always follow safety precautions when measuring high voltages.