1. Advanced Insulation Design for Electrical SafetyThe socket tester UK with LCD display features a safe insulation design, reducing the risk of electric shock. for home and office use, this RCD tester guarantees reliable safety inspections for mains outlets 2. Wide Voltage Range and Accurate MeasurementsThis plugin tester supports a voltage range of 90 250V, including 220V±20V RCD testing and 110V±20V GFCI testing, with precise LCD readouts for realtime data. Easily check your outlet's voltage and detect potential faults 3. Detect 7 Common Wiring Faults InstantlyThe mains tester identifies issues such as missing ground, reversed live/neutral wiring, and faulty connections. This UK plug tester helps detect wiring problems quickly, ensuring your electrical systems meet safety standards 4. Quick and Reliable RCD Function TestingTest the leakage protection of your outlets by simply pressing the RCD button. A tripping switch indicates proper function; if not, the leakage protector may need replacement. Ideal for ensuring the safety of your electrical circuits