Digital Line Tester LCD NCV Function RJ45 RJ11 Cable Tester
Digital Line Tester LCD NCV Function RJ45 RJ11 Cable Tester
Digital Line Tester with LCD Display, NCV Detection & RJ45/RJ11 Compatibility
Take the guesswork out of network and cable diagnostics with this professional-grade Digital Line Tester. Featuring a clear LCD display, built-in NCV (Non-Contact Voltage) detection, and broad cable compatibility, this compact tool is essential for IT professionals, electricians, home network installers, and DIY enthusiasts alike.
Key Features
- Multi-Cable Compatibility: Tests RJ11 and RJ45 UTP/SSTP twisted-pair cables as well as coaxial cables — covering the full range of common network and telephone wiring.
- PoE Standard Identification: Identifies 802.3af/at Power over Ethernet standards and detects port power positions — ideal for Internet rooms, security systems, and low-voltage installations.
- NCV Non-Contact Voltage Detection: Alerts you to live circuits at 40V and above without direct contact, helping you work confidently around energized wiring during installation and maintenance.
- Cable Tracing Capability: Compatible with the UT683R Marker for 125KHz interference-resistant cable tracing through buried or in-wall wires — locate hidden cables with confidence.
- Clear LCD Display: Bright, easy-to-read screen delivers at-a-glance results, even in low-light environments.
- Compact & Portable: Cylindrical form factor measuring approximately 18×80mm (0.71×3.15 in) fits comfortably in a tool pouch, pocket, or kit bag.
- Ready to Use: Plug-and-test design — no complex setup required. Delivers professional-level results right out of the box.
Specifications
- Display: LCD
- Dimensions: Approx. 18×80mm (0.71×3.15 in)
- Cable Types Supported: RJ11, RJ45, UTP, SSTP, Coaxial
- PoE Standards: 802.3af / 802.3at
- NCV Detection Threshold: 40V+
- Cable Tracing Frequency: 125KHz (with compatible UT683R Marker)
- Vendor: Qme
Who Is This For?
This Digital Line Tester is the perfect addition to any toolkit for network technicians, home office builders, security system installers, and electricians who need a fast, reliable way to verify cable integrity, detect live voltage, and trace hidden wiring — all in one handheld device.
For more information on electrical safety best practices when working with wiring and low-voltage systems, visit OSHA's Electrical Safety Guidelines.
Frequently Asked Questions
Q: What types of cables can the Digital Line Tester test?
A: This Digital Line Tester supports RJ11 and RJ45 UTP/SSTP twisted-pair cables as well as coaxial cables. It also identifies 802.3af and 802.3at PoE standards and detects port power positions, making it suitable for network rooms, security setups, and low-voltage wiring projects.
Q: How does the NCV (Non-Contact Voltage) detection work?
A: The NCV function allows the tester to detect the presence of live voltage at 40V or above without making direct contact with the conductor. Simply hold the tester near a wire or cable — it will alert you if voltage is present, helping you work more safely around potentially energized circuits.
Q: Can I use this tester to trace cables inside walls or underground?
A: Yes! The Digital Line Tester is compatible with the UT683R Marker, enabling 125KHz interference-resistant cable tracing. This makes it well suited for locating buried or in-wall wires without destructive investigation.
Q: Is this tester suitable for home use or only professional settings?
A: This tester is designed to deliver professional-level results in both home and commercial settings. Its compact cylindrical design, intuitive LCD display, and plug-and-test operation make it accessible for DIY home network setups as well as professional IT and electrical installations.