Digital Socket Tester EU/UK/US | Outlet Wiring & RCD Checker
Digital Socket Tester EU/UK/US | Outlet Wiring & RCD Checker
Professional Digital Socket Tester – Instant Outlet Wiring Verification
Take the guesswork out of electrical safety with this professional-grade Digital Socket Tester. Compatible with EU, UK, and US plug types, this compact device lets homeowners, electricians, and facility managers quickly verify socket wiring integrity, polarity, phase, and RCD/GFCI functionality — all from a bright HD backlit LCD display. Made in Mainland China.
Key Features
- Wiring Sequence Test: Insert into any standard 3-pin socket. An orange backlight alerts you instantly if a wiring error is detected, and the display identifies the specific fault type.
- Data Lock / Auto-Hold: Readings automatically lock after 3 seconds. Press the unlock button to release and take a new measurement — great for recording results in hard-to-reach locations.
- RCD / GFCI Trip Test: With correct wiring confirmed, hold the RCD button for 2+ seconds to trigger the residual current device. The display shows the trip time in milliseconds; a flashing indicator confirms completion. Non-tripping indicates a faulty device.
- Auto Power-Off: Shuts down automatically after 5 minutes of inactivity to conserve battery life.
- CAT II 300V Safety Rating: Certified to EN61010-1/-2-030 and EN61326-1, ensuring dependable, safe operation in residential and commercial environments.
- HD Backlit LCD: Large, clear display remains readable even in dim or poorly lit spaces.
- Wide Application: Ideal for homes, offices, shopping malls, workshops, and any environment where outlet safety matters.
Technical Specifications
| Voltage Range | AC 30–260V / 45–65Hz, ±(2.0%+2) |
| Leakage Voltage Range | 0–99V / 45–65Hz, ±(2.0%+2) |
| Trip Time Test | 10–1000 ms, ±(2.0%+4) |
| GFCI Test (HT97B) | >5 mA |
| RCD Test (HT97D/HT97E) | >30 mA |
| Voltage Measurement | 48V–250V / 45–65Hz |
| Display | Backlit LCD |
| Power Supply | 2 × 1.5V AAA batteries (not included) |
| Dimensions | 67 mm × 65 mm × 63 mm |
| Safety Rating | EN61010-1/-2-030; EN61326-1, CAT II 300V |
| Input Voltage | <50V AC / 75V DC |
Socket Fault Detection Modes
- Correct wiring
- Open ground
- Open neutral
- Open live
- Live wire and ground wire reversed
- Live wire and neutral wire reversed
- Live wire and ground wire reversed + missing ground wire
What's in the Box
- 1 × Digital Socket Tester
- 1 × User Manual
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Frequently Asked Questions
Q: What plug types does this digital socket tester support?
A: This socket tester is compatible with EU (Type C/F), UK (Type G), and US (Type A/B) three-pin plug standards, making it versatile for use across multiple regions and plug configurations.
Q: Does the socket tester come with batteries?
A: No, batteries are not included. The tester requires 2 × 1.5V AAA batteries, which are widely available and easy to source separately before first use.
Q: Can this tester check if my RCD/GFCI is working correctly?
A: Yes. Once the socket shows correct wiring, press and hold the RCD button for over 2 seconds. A properly functioning residual current device will trip and the display will show the exact trip time in milliseconds. If no trip occurs, this indicates a potential fault with the RCD device that should be inspected by a qualified electrician.
Q: Is this socket tester safe for home use?
A: Absolutely. The tester carries a CAT II 300V safety certification (EN61010-1/-2-030; EN61326-1), which is the appropriate safety category for testing outlets in household and light commercial environments. Always follow the included user manual for safe operation.