







The UNI-T UT681HDMI is a professional HDMI cable tester designed for quickly verifying the continuity and wiring integrity of HDMI and Mini HDMI cables. It supports HDMI 1.2, 1.3, 1.4, and 2.0 standards, making it an ideal tool for AV installers, technicians, electricians, and maintenance professionals. Equipped with 20 LED status indicators, the tester provides fast and accurate diagnostics for HDMI cable installations and repairs.
The UT681HDMI can scan all 19 internal wires of an HDMI cable to identify open circuits, short circuits, crossed wires, and incorrect wiring sequences. It offers both Fast Scan Mode and Full Display Mode, enabling users to quickly detect faults or perform detailed cable verification. The tester supports HDMI Type-A and Mini HDMI Type-C connectors, making it suitable for testing a wide range of HDMI cable configurations.
Powered by a standard 9V battery, the UT681HDMI features a low battery warning indicator that alerts users when battery voltage drops below approximately 7.2V. It also includes an automatic power-off function after 10 minutes of inactivity, helping conserve battery life. Its lightweight and portable design makes it perfect for installation, maintenance, troubleshooting, and repair work.
| Feature | Details |
|---|---|
| Brand | UNI-T |
| Model | UT681HDMI |
| Product Type | HDMI / Mini HDMI Cable Tester |
| Supported HDMI Versions | HDMI 1.2 / 1.3 / 1.4 / 2.0 |
| Supported Connectors | HDMI Type-A, Mini HDMI Type-C |
| Scan Test Mode | 20 LED Sequential Scan |
| Full Display Mode | 20 LED Full Display |
| Continuity Test | Yes |
| Short Circuit Test | Yes |
| Crossover Test | Yes |
| Network Cable Test | Shielded / Unshielded |
| Power Supply | 9V Battery |
| Battery Included | No |
| Low Voltage Test | Yes |
| Auto Power-Off | After 10 Minutes |
| Operating Temperature | 0°C ~ 40°C |
| Storage Temperature | -10°C ~ 50°C |
| Operating Humidity | 20% ~ 80% RH |
| Storage Humidity | 10% ~ 90% RH |
| Maximum Altitude | Less than 2000 m |
| Weight | Approx. 175 g |
| Origin | Mainland China |
Approx.: 175 g
Approx.: 125 × 55 × 30 mm
The UNI-T UT681HDMI is a reliable and easy-to-use HDMI cable tester designed for professionals who require fast and accurate cable diagnostics. With support for multiple HDMI standards, intelligent wire scanning, 20 LED status indicators, and portable operation, it is an essential tool for HDMI cable installation, maintenance, and troubleshooting.







