1. Introduction
The CERTEON Non-Contact AC Voltage Tester Pen is designed for safe and efficient electrical installation, maintenance, and inspection tasks. This device allows for voltage sensing without direct contact with conductive parts, enhancing user safety. It features live and neutral wire identification, phase sequence indication, adjustable sensitivity, and an integrated flashlight. This tool is ideal for professional electricians, HVAC technicians, maintenance personnel, and qualified DIY users.

2. Safety Information and Precautions
WARNING! Risk of Electric Shock.
- Although this device is non-contact, hazardous voltage may still be present. Always follow proper electrical safety procedures.
- Operate the tester only within the specified voltage range of 12V to 1000V AC. Do not use the device on DC circuits.
- Always verify the tester on a known live source before and after use to confirm proper operation.
- Do not use if the housing or probe tip is damaged.
- Replace batteries when the low battery indicator appears.
- Do not expose the device to rain, excessive humidity, or explosive atmospheres.
- Do not rely solely on the tester to confirm absence of voltage.
- Keep out of reach of children.
- This device is intended for use by qualified personnel familiar with electrical safety practices.
Proper Disposal:
Follow WEEE directives for electronic waste. Do not dispose of with household waste.
3. Package Contents
Please check the package for the following items:
- Voltage tester pen (TA881A, TA11B, or TA13A model)
- User manual
- 2 x AAA batteries (may be included or sold separately)
4. Specifications
| Feature | Specification |
|---|---|
| Power Supply | 2 x AAA batteries |
| Rated Voltage | 12V to 1000V AC |
| Material | PC housing with insulated probe tip |
| Size | Approx. 159 x 21 x 20 mm |
| Net Weight | Approx. 53 g |
| Display | LCD display with bar graph indication |
| Alarm Mode | Audible alarm and visual indicator |
| Frequency Range | 50 Hz / 60 Hz |
| Sensitivity | Adjustable (High/Low) |
| Probe Type | Flat probe |
| Flashlight | Integrated LED light |
| Live/Neutral Detection | Supported |
| Phase Sequence Detection | Supported (Model-dependent) |
| Low Battery Indication | Supported |
| Auto Power Off | Approx. 3 minutes without signal |
| Altitude Rating | ≤ 2000 m |
| Safety Rating | CAT III 1000V / CAT IV 600V |
| Certification | CE |
5. Setup
Battery Installation
- Unscrew the battery compartment cap at the bottom of the tester.
- Install two AAA batteries correctly according to the polarity markings inside the battery compartment.
- Close the battery cover securely by screwing the cap back on.

6. Operating Instructions
Power On/Off
Press the power button to switch on the device. Verify normal startup by checking the LCD display and indicator lights. The device will automatically power off after approximately 3 minutes of inactivity.
Adjusting Sensitivity
The tester defaults to 48V sensing at startup. To switch sensitivity levels:
- Short press the