Last Updated on September 27, 2025 by Ahmed Hagag
UNI-T UT12S-ROW AC Voltage Detector
The UNI-T UT12S-ROW is a non-contact AC voltage detector crafted to provide a fast and simple check for presence of live voltage in wiring systems, sockets, and conductors. With a slim, pen-style body, it slips into tool pouches easily and can be used quickly without needing to screw back covers or attach probes. Instead, by bringing it close to an electrical line or outlet, the user can detect whether AC voltage is present in a nonintrusive way.
Its detection system is based on sensing the electromagnetic field emitted by alternating current, which triggers LED lighting and a buzzer as feedback. The UT12S-ROW includes a built-in flashlight to illuminate test points in dark areas. Its design emphasizes reliability and safety: the unit is insulated, has an auto shutoff function, and is intended for repeated use in typical service and maintenance tasks.
In practice, the UT12S-ROW becomes a go-to tool when prioritizing speed and safety in preliminary checks. Electricians and maintenance personnel use it before performing work on circuits to confirm live status. Because it requires no contact and no complex setup, it’s ideal for quick walk-through inspections, checking wall sockets, junction boxes, and cable paths. Its portability and ease of use make it a practical companion for everyday electrical diagnostics.
Features:
- Non-contact AC voltage detection.
- LED visual indication.
- Buzzer / audible indication.
- Auto power-off.
- Low voltage indication.
- Built-in flashlight.
- Compact pen form factor.
Specifications:
| Specifications | |
| Model | UT12S-ROW |
| AC voltage (High) | 90V~1000V |
| Frequency range | 50/60Hz |
| Built-in flashlight | √ |
| ※Audible (buzzer) and visual (LED) indication | √ |
| Buzzer | √ |
| LED indication | √ |
| Auto power off | √ |
| Low voltage indication | √ |
| Drop test | 1m |
| General Characteristics | |
| Power | 1.5V battery (R03) x 2 |
| Product color | Red and grey |
| Product net weight | 50g |
| Product size | 150mm x 18 mm x 23mm |
Applications:
- Maintenance of low-voltage conductors, cables, sockets.
- Quick AC voltage presence checks in wiring systems.
Package Contents:
- 1x UT12S-ROW voltage detector (main unit)
- 2x Batteries (R03 / AAA)
- 1x English user manual / instruction guide
- 1x Blister packaging / retail box