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YOJOCK Socket Tester RCD Review: Can it find wiring faults quickly?

Socket Tester RCD Plug Outlet Tester, Electrical Receptacle Detector with LCD Display, 90-250V Power Socket Automatic Electric Circuit Polarity Voltage Detector Plug Breaker Finder
4.5
[Simple Plug-and-Play]  Color LCD displays wiring status instantly for easy, safe testing by anyone.
[Comprehensive Wiring Diagnostics]  Identifies six common wiring faults and shows clear indicators to pinpoint issues quickly.
[One-Click RCD Test]  Built-in RCD test button verifies breaker trip protection with a single press.
[Easy-To-Read Instruction Chart]  On-device chart explains LED codes for fast, accurate interpretation by anyone.
[Certified Safety & Warranty]  CAT II 300V and CE-certified, includes one-year guarantee for reliable professional use.
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Socket testing for homes, workshops and offices, the YOJOCK Socket Tester RCD displays wiring and voltage status on a colour LCD for fast checks. Colour-coded feedback and a one-button RCD test reduce uncertainty when assessing socket safety. Will the tester handle everyday fault-finding reliably and clearly?

⚡ At a Glance
  • Wiring Detection: Three indicator lights and an LCD identify correct wiring and several common faults
  • Best for: Tradespeople, maintenance staff and homeowners needing rapid socket checks
  • Not ideal for: Detailed electrical diagnostics that require measurements beyond basic polarity and RCD testing

Colour LCD and LED indicators show wiring status at a glance with green for correct and orange for faults. One-button RCD testing checks whether a breaker trips to confirm basic leakage protection.


Clear wiring verdicts - with colour LCD and LED indicator logic

A colour LCD displays a simple green or orange result while three indicator lights map to predefined wiring patterns. The chart printed on the tester decodes the LED combinations into wiring conditions recognised by the manufacturer.

Immediate visual feedback helps decide whether a socket is safe to use or needs further inspection, saving time compared with guessing from loose plugs or intermittent faults.

Quick RCD verification - with one-button trip test

A dedicated RCD button sends a test signal that should cause the circuit breaker to trip when residual current protection is functioning. The tester warns that triggering the RCD may trip household wiring systems during normal use.

Fast confirmation of RCD operation is useful before using power tools or sensitive equipment, giving peace of mind that leakage protection responds as expected.

Simple for non-experts - thanks to plug-and-play design and an easy chart

Plug the unit directly into a socket and consult the on-board chart to interpret LED and LCD results; no separate meter setup is required. Certification to CAT II 300V and CE marking indicate adherence to basic safety standards.

Laypeople can perform basic polarity and voltage checks confidently, making the tester handy for routine checks in homes, offices and light industrial areas.

✨ The 4 Key Reasons for YOJOCK Socket Tester RCD
  1. Detects six wiring conditions - Confirms correct wiring, open ground and common reversals in seconds
  2. One-button RCD test - Verifies trip function quickly for immediate safety checks
  3. Plug-and-play operation - No setup required, ready to use in moments
  4. CAT II 300V, CE marked - Suitable for everyday socket testing with a one-year guarantee
📋 Technical Details at a Glance
  • Display: Colour LCD with green/orange indication
  • Voltage range: 90–250V
  • Indicator lights: Three LED indicator lights for wiring patterns
  • RCD test: One-button trip test for residual current protection
  • Wiring errors detected: Correct wiring, open ground, open neutral, live/ground reverse, live/neutral reverse (manufacturer lists six conditions)
❓ Frequently Asked Questions

Q: What wiring faults can the tester identify?

A: The screen and three indicator lights alert to several wiring conditions listed by the manufacturer, including correct wiring, open ground, open neutral and live/neutral or live/ground reversals.

Q: Can the RCD test be used on a normal socket?

A: Press the RCD button to check whether a breaker trips; if the socket trips, residual current protection is functioning. Be careful, as using the RCD test may cause household wiring systems to trip during normal use.

Q: Is the tester suitable for non-professionals?

A: Yes. A plug-and-play design, colour-coded display and a clear on-board chart make the tester accessible for homeowners and office staff to perform basic safety checks.

🏆 Our Verdict

The YOJOCK Socket Tester RCD suits tradespeople and anyone who needs quick verification of socket wiring and basic RCD operation. Colour-coded LCD feedback combined with LED logic and a one-button RCD test makes fault-finding straightforward. CE marking and a one-year guarantee suggest practical, reliable service for routine maintenance and safety checks.