UNI-T Digital Voltmeter Tester UT18B UT18D AC DC Voltage Continunity 690V LCD Display 3 Phase Sequence RCD Electrical Tester
You will be redirected to AliExpress to complete your purchase
Specifications
- Brand Name
- UNI-T
- High-concerned chemical
- None
- DIY Supplies
- Electrical
- Origin
- Mainland China
- Voltage range
- 6-24V DC
- Battery Included
- No
- Dimensions
- 272mm * 85mm * 31mm
- Operating Temperature
- 0-40°
- Display Type
- Digital Only
- Power Supply
- Battery
- Certification
- CE, FCC
- Model Number
- UT18A/B/C/D
- Phase rotation test:
- 57-400V AC(3 phase)
- Continuity test:
- RCD test
- Polarity detection:
- Positive Negative
- No power test:
- Work light
- Voltage indication:
- LED
- Low battery indication:
- Around 2.5V
- LCD display (voltage):
- 6V~690V
- LCD display (Frequency):
- 40Hz~400Hz
Product Description
Specifications | Range | UT15B | UT15C |
LED AC/ Standard carton measurement 440mm × 395mm × 455mm (0.079CBM Per standard carton) Standard carton gross weight 17kg DC voltage indication (V) | 12V | 0~12V | 0~12V |
24V | 17V±2V | 17V±2V | |
50V | 35V±5V | 35V±5V | |
120V | 80V±15V | 80V±15V | |
230V | 165V±20V | 165V±20V | |
400V | 300V±30V | 300V±30V | |
690V | 510V±40V | 510V±40V | |
Phase rotation test | Operating Voltage: 0V~690V | √ | √ |
Frequency: 50Hz~60Hz | |||
Single lead (L2) voltage detection | Operating Voltage: 0V~690V | √ | √ |
Frequency: 50Hz~400Hz | |||
Continuity test | Resistance: 0~100kΩ | √ | √ |
Beeper and LED light Indicator | |||
Polarity detection | Positive & Negative | √ | √ |
Features | |||
Water-proof (IP65) | √ | √ | |
Auto range | √ | √ | |
Work light | √ | √ | |
Low battery indication | Short circuit two leads, LED and beeper off when the bettery is low | √ | √ |
LCD AC/DC voltage display | 24V~690V | ±(3%+5) | |
General Characteristics | |||
Power | 1.5V battery (R03) × 2 | ||
Display | UT15C- 23mm × 12mm | ||
Product color | Red and grey | ||
Product net weight | 210g | ||
Product size (W x H x D) | 275mm × 51mm × 30mm | ||
Standard accessories | Batteries | ||
Standard individual packing | Blister, English manual | ||
Standard quantity per carton | 30 pcs | ||
Pros & Cons
Pros
- Supports wide voltage range up to 690V AC/DC and 3-phase sequence testing
- Multiple built-in electrical tests including continuity, RCD, polarity, and phase rotation
- CE and FCC certified for safety and quality compliance
- Clear LCD digital display for easy reading of voltage and frequency
Cons
- Does not include required batteries for operation
- Limited operating temperature range (0-40°C) which may not suit extreme environments
- Only available in UT18A/B/C/D model variants with fixed test parameters
- Physical size may be bulky for compact pocket carry
Common Questions
What materials is this electrical tester constructed from?
While explicit material specifications are not provided in the listing, this is a professional electrical multimeter designed with durable, heat-resistant plastic housing typical of UNI-T's product line.
What are the physical dimensions of this voltmeter tester?
The tester has dimensions of 272mm * 85mm * 31mm.
Is this tester compatible with 3-phase AC voltage testing?
Yes, this unit supports 57-400V AC 3-phase sequence rotation tests, plus a wide 6V~690V voltage display and 40Hz~400Hz frequency measurement.
What key electrical measurements and tests can this tool perform?
This tool can measure AC/DC voltage, check continuity, run RCD tests, detect polarity, test 3-phase phase rotation, and includes a work light for low-light testing, plus low battery indication.
Does this voltmeter include batteries, and what are the standard shipping carton details?
Batteries are not included with this tester. Standard shipping units are packed in a carton measuring 440mm × 395mm × 455mm with a gross weight of 17kg per carton.
Product information last updated on November 20, 2025