UNI-T UT07B-EU Socket Tester

The UNI-T UT07B-EU socket tester is a compact plug-in device designed to check wiring correctness in AC mains outlets. You insert it into a standard European socket, and its LED indicators light up in various combinations to show whether the live (L), neutral (N), and earth (E/PE) connections are correct, reversed, or missing. It makes wiring verification fast and intuitive by eliminating guesswork.

Beyond basic wiring checks, the UT07B-EU includes an RCD (residual current device) test function, allowing users to press a button that induces a small leakage current (approx. 30 mA) to verify whether a protective device (RCD) will trip under fault conditions. This extends its usefulness from mere wiring diagnostics to safety verification of protective devices. The housing is molded from durable plastic and sized to be portable, with LED status lights clearly visible on its face.

In use, this tester becomes a go-to tool for electricians, installers, safety inspectors, and DIYers who want a quick, non-intrusive sanity check of socket wiring. It helps detect common wiring faults missing earth, reversed live/neutral, absent neutral, or incorrect phase orientation before connecting sensitive or critical equipment. Because of its simplicity, it’s also useful for preliminary safety checks in homes or sites without needing to bring out a full multimeter or tester kit.

• LED indication of wiring status (various lamp combinations).
• RCD test (residual current device / leakage test).
• Detection of missing live, missing neutral, missing earth.
• Indication of reversed live/earth.
• Compact plug-in form factor.
• Double insulation construction.
• LED status feedback.

Specifications:

Specifications	UT07B-EU
Operating voltage	230V
Operating current	＜18mA
Working frequency	50Hz~60Hz
RCD	~30mA
Indications	Correct	OK, leakage test passed
	Ground missing	OK
	Live/Ground inverted	Ground missing
	Live/Neutral inverted	Live missing
	Neutral missing	Neutral missing
		Live/Ground inverted
		Live/Ground inverted and ground missing
General Characteristics
Product net weight	UT07B-EU: 80.5g
Product size	UT07B-EU: 65x65x61mm
Standard individual packing	Blister, English manual

Applications:

• Socket wiring verification.
• RCD (residual current device) testing / safety checks.
• Detection of wiring faults (missing earth, reversed live/neutral).
• Preliminary electrical safety inspection.

Package Contents

• 1x UT07B-EU socket tester (main unit)
• 1x User manual / instruction guide
• (Usually no separate batteries needed — the device is passive / powered by the socket)

Documents:

• Datasheet
• User Manual