The UNI-T UT18E measures AC/DC voltage from 6V to 1000V and supports continuity, frequency, polarity, phase-sequence and RCD testing. Its simultaneous LED and LCD indication, audible alerts and CAT IV 600V safety rating suit professional electrical installation and maintenance work.
Key Features
- Wide voltage range – Measures AC/DC voltage up to 1000V
- Dual indication – Displays results on LED and LCD
- Phase-sequence testing – Checks three-phase systems
- Continuity testing – Provides audible and LED indication
- RCD testing – Supports checks on 230V circuits
- Automatic polarity – Identifies positive and negative DC voltage
- Battery-free detection – Indicates voltage from 100V to 1000V
- Professional safety – Rated CAT III 1000V / CAT IV 600V
Product Specifications
| Brand |
UNI-T |
| Model |
UT18E |
| Product Type |
Voltage and Continuity Tester |
| Voltage Display |
LED and LCD |
| LED Voltage Levels |
12V / 24V / 50V / 120V / 230V / 400V / 690V / 1000V |
| Range Selection |
Automatic |
| Polarity Detection |
Automatic positive / negative indication |
| Low-Impedance Measurement |
Yes |
| Self-Inspection |
Full LED and LCD check |
| Battery-Free Voltage Detection |
100–1000V AC/DC |
| Overvoltage Protection |
1100V |
| Additional Functions |
Silent mode, backlight, flashlight, buzzer and low-battery indication |
| Safety Rating |
CAT III 1000V / CAT IV 600V |
| Power Supply |
2 × 1.5V AAA/LR03 batteries |
| Product Colour |
Red and black |
| Dimensions |
272 × 85 × 31mm |
| Net Weight |
277g, including batteries |
| Certificates |
CE, UKCA, RoHS |
Measurement Specifications
| AC/DC Voltage |
6–1000V |
±(1.5% + 1 to 5 digits), depending on range |
| Frequency |
40–400Hz |
±(3%+5) |
| Phase-Rotation Test |
100–400V AC, three-phase |
50–60Hz |
| Continuity Test |
0Ω–60kΩ |
Buzzer and LED indication |
| RCD Test |
230V |
50–400Hz |
Applications
- AC/DC voltage checks in electrical installations
- Three-phase sequence verification
- RCD inspection and troubleshooting
- Circuit continuity and polarity testing
- Distribution-board and industrial maintenance
Included Components
- UNI-T UT18E Voltage and Continuity Tester
- User manual