The UNI-T UT18D Voltage and Continuity Tester is a professional handheld electrical testing instrument designed for electricians, maintenance technicians and engineering staff. It supports AC/DC voltage measurement, continuity testing, RCD trip testing, polarity identification and frequency measurement. With IP65 waterproof performance, built-in LED lighting, backlit LCD and multiple practical auxiliary functions, it is suitable for various complex indoor and outdoor circuit maintenance and inspection work.

 

 

1.LED voltage indication for AC & DC voltage

2.Continuity test with buzzer and LED light reminder

3.RCD trip test function

4.Polarity detection to identify positive and negative poles

5.Self-test function, LED full light and LCD full display for inspection

6.No-battery detection reminder

7.IP65 waterproof capability

8.Auto-ranging measurement

9.Built-in LED work light for dim environments

10.Low battery indicator

11.Overvoltage warning function

12.Auto power-off to save power

13.Silent mode to turn off buzzer sound

14.Backlit LCD screen, supports voltage and frequency display

 

 

Voltage measuring range: 100V ~ 690V AC/DC

Resistance measuring range: 0 ~ 100kΩ

Frequency measurement range: 40Hz ~ 400Hz

Frequency test for RCD: 50Hz ~ 60Hz

Standby current: less than 10µA

Voltage threshold of overvoltage alarm: approx.755V

Illumination working voltage: approx.2.4V

LCD voltage display accuracy: ±(1.5%+5)

LCD frequency display accuracy: ±(3%+5)

 

 

Household circuit troubleshooting, building wiring acceptance, industrial equipment electrical maintenance, on-site electrician testing, distribution cabinet inspection, construction wiring inspection, electrical safety fault detection.

 

 

1 × UNI-T UT18D Voltage and Continuity Tester

1 × User Manual

 

 

The maximum measurable voltage is 690V AC/DC. Do not connect to circuits exceeding this limit.

 Conforms to CAT IV safety standard for low voltage distribution systems.

 Remove batteries if the tester will not be used for a long time.

 IP65 rating prevents splash water, do not immerse the tester into liquid.