UNI-T UT685B KIT TDR Cable Tester
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Prices updated: 13 Oct 2026
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About this product
A handheld time-domain reflectometry (TDR) cable tester for low-voltage network and coaxial cables. It measures cable length up to 500 m with 0.33 m resolution, detects opens and shorts, and identifies PoE standards (IEEE 802.3af/at). It features a 2.8-inch backlit LCD and RJ11, RJ45 and coaxial test ports.
Specifications
- Measurement method
- TDR (Time Domain Reflectometry)
- Maximum cable length
- 500 m
- Resolution
- 0.33 m
- Fault detection
- Opens and shorts
- PoE standards
- IEEE 802.3af/at
- Display
- 2.8-inch backlit LCD
- Test ports
- RJ11, RJ45, coaxial
Frequently asked questions
Can it test RJ45 network cables directly?
Yes. The tester includes an integrated RJ45 test port, so network cables can be tested without additional adapters. RJ11 and coaxial ports are also built in.
What does the PoE identification feature tell me?
It identifies the Power over Ethernet standard present on the line, IEEE 802.3af or 802.3at, which helps confirm whether power is supplied before you connect equipment to the cable.
