1. Introduction
The ANENG AC11 Smart Socket Tester is designed for rapid and accurate detection of power socket polarity and the safety of leakage switches. This device can identify ground wire, neutral wire, live wire, leakage, RCD trip status, socket voltage, and wiring configurations. All results are displayed simultaneously on its integrated LCD screen.
This manual provides essential information for the safe and effective use of your ANENG AC11 Socket Tester. Please read it thoroughly before operation.
2. Safety Information
WARNING: Electrical testing can be hazardous. Always exercise extreme caution when working with electrical circuits. Failure to follow safety instructions may result in electric shock, injury, or damage to the device or property.
- Always ensure the device is in good working condition before use. Do not use if damaged.
- Do not attempt to open or modify the device.
- When performing the leakage switch (RCD) protection detection function, ensure all electrical appliances connected to the circuit are turned off. Perform this test only with appropriate permission and awareness that a power interruption will occur.
- This device is intended for indoor use only.
- Keep out of reach of children.
- Ensure your hands are dry before handling the tester or any electrical outlets.
3. Product Overview and Features
The ANENG AC11 Socket Tester is a compact and portable tool designed for quick electrical diagnostics. It features a VA color display for clear readings in various lighting conditions.

Figure 1: Front view of the ANENG AC11 Socket Tester displaying a correct wiring configuration and voltage measurements.

Figure 2: Overview of the ANENG AC11's main features, including leakage protection, phase metering, automatic shut-down, VA color display, zero firewire identification, and non-contact detection.
Key Features:
- Compact & Portable: Easy to carry and use in various locations.
- VA Color Display Screen: High-definition display ensures clear visibility of readings, even in low-light conditions.
- 8 Display Patterns: Provides clear indicators for various socket wiring states.
- Non-contact Induction (NCV): Detects AC voltage without direct contact.
- RCD Test Button: Allows for quick testing of Residual Current Devices (RCDs) for leakage protection.
4. Setup
Battery Installation:
The ANENG AC11 Socket Tester requires 2 AAA batteries (not included) for operation. To install the batteries:
- Locate the battery compartment on the back of the device.
- Unscrew the screw securing the battery cover.
- Insert 2 AAA batteries, ensuring correct polarity (+/-).
- Replace the battery cover and secure it with the screw.

Figure 3: Rear view of the tester, indicating the battery compartment and button functions.
5. Operating Instructions
Power On/Off:
Press and hold the '>2S POWER' button for more than 2 seconds to turn the device on or off.
Basic Socket Testing:
To test a socket's wiring and voltage:
- Ensure the tester is powered on.
- Insert the ANENG AC11 Socket Tester into the desired electrical outlet.
- The LCD screen will immediately display the wiring status (e.g., 'CORRECT' or 'INCORRECT' with specific fault indicators) and the Live-Neutral (L-N) and Neutral-Earth (N-E) voltage readings.

Figure 4: The tester measuring AC voltage in an active socket.
6. Display Indicators
The ANENG AC11 features a clear LCD display with various symbols and indicators to communicate the status of the electrical circuit. Refer to the diagram below for a detailed explanation of each indicator:

Figure 5: Explanation of all display indicators on the ANENG AC11.
- Low battery symbol: Indicates that the batteries need replacement.
- Reversed order: Indicates incorrect wiring where live and neutral wires are swapped.
- Neutral wire: Symbol for the neutral conductor.
- Connected correctly: Indicates proper wiring.
- Sequential connection error: General wiring error.
- FireWire (Live Wire): Symbol for the live conductor.
- Non-contact AC voltage (NCV): Indicates NCV detection is active.
- Induction strength index: Bar graph showing the strength of detected NCV.
- Neutral and Earth voltage (N-E): Displays voltage between neutral and earth.
- Live and Neutral voltage (L-N): Displays voltage between live and neutral.
- High voltage symbol: Warning for high voltage detection.
- Earth wire: Symbol for the earth (ground) conductor.
7. RCD Test Function
The RCD (Residual Current Device) test function checks the integrity of your leakage protection system. This test will trip the RCD if it is functioning correctly.
Performing an RCD Test:
- Plug the ANENG AC11 into the socket you wish to test.
- Ensure all sensitive electronic devices connected to the circuit are unplugged or turned off to prevent data loss or damage from a power interruption.
- Press the 'RCD TEST' button.
- If the RCD trips (power cuts off), it indicates that the leakage protection is functioning correctly.
- If the RCD does not trip, it indicates a potential fault in the leakage protection system, and further investigation by a qualified electrician is recommended.

Figure 6: RCD test procedure and expected results.
Important: The RCD test will cause a power interruption. Use with caution and only with permission.
8. Non-Contact Voltage (NCV) Detection
The NCV feature allows for the detection of AC voltage without direct contact with live conductors, enhancing safety during preliminary checks.
Using NCV:
When the tester is near an AC voltage source, the lightning symbol and index grid on the display will flash, and an audible alarm will sound. The induction strength index (bar graph) will indicate the proximity and strength of the detected voltage.

Figure 7: Non-contact voltage detection in action.
9. Specifications

Figure 8: Physical dimensions of the ANENG AC11 Socket Tester.
| Parameter | Value |
|---|---|
| Material | ABS |
| Color | Black |
| Plug Type | UK Plug |
| Power Supply | 2 * AAA battery (NOT included) |
| Voltage Test Range | 0.1V~250V / 40~1kHz |
| RCD Current | >30mA |
| RCD Working Voltage | 220V±20V |
| Working Voltage | 2.6~3.3V |
| Working Environment | 0°C~40°C, 20%~75% RH |
| Storage Environment | -10°C~50°C, 20%~80% RH |
| Item Size | Approx. 64.5*64.5*58.2mm / 2.54*2.54*2.29in |
| Item Weight | Approx. 96g / 3.39oz |
10. Maintenance
- Cleaning: Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: Replace batteries when the low battery symbol appears on the display to ensure accurate readings. Refer to Section 4 for battery installation instructions.
- Storage: Store the device in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.
11. Troubleshooting
- Device does not power on: Check if batteries are installed correctly and have sufficient charge. Replace batteries if necessary.
- Inconsistent voltage readings: Ensure the tester is fully inserted into the socket. Verify the socket itself is functioning correctly with another known working device. Low battery can also affect accuracy; replace batteries.
- RCD test does not trip: This indicates a potential fault with the RCD or the circuit's leakage protection. Consult a qualified electrician immediately.
- No display or partial display: Check battery level. If the issue persists after battery replacement, contact customer support.
12. Warranty and Support
For warranty information or technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.