LAN cable tester RJ45, RJ11, USB NT-0403

Network and USB cable tester – quick connection diagnostics

This compact tester allows for quick and effective verification of the functionality of RJ45 network cables, RJ11/RJ12 telephone cables, and USB cables. The device is indispensable for both professional installers and end-users who want to independently check the correctness of the cabling. The tester enables the identification of damage, circuit breaks, and errors in cable routing, which translates into stable and reliable network and data connections.

The NT-0403 tester is a versatile tool, supporting various USB standards (A/A, A/B 1.0, 1.1, 2.0) and RJ45, RJ11 and RJ12 connectors. The set includes adapters for RJ11/RJ12 sockets, which increases its functionality and scope of applications. Operation is signaled by LED indicators, which ensures intuitive interpretation of test results.

Application and functionality

• Quick diagnostics: Allows for quick checking of cable continuity and pin connection correctness.
• Versatility: Supports a wide range of connectors – RJ45, RJ11/RJ12 and USB (A/A, A/B).
• Simple operation: Intuitive operation using LEDs makes it easy to interpret test results.
• Compact size: Allows for convenient storage and transport of the tester in a tool kit.
• Adapters included: Included RJ11/RJ12 adapters expand the capabilities of the device.
• Damage identification: Helps locate circuit breaks or incorrect cable connections.

Construction and product features

The device is made of durable black-blue plastic. Its small dimensions (weight 114g) ensure comfortable use and easy transport. The tester does not require a battery – which is a significant advantage compared to other models on the market. 9V 6F22 battery power (not included) enables the device to operate in places without access to an external power source. The tester has a slider switch to select the "TEST" operating mode. After pressing the "TEST" button, the green "POWER" LED lights up, indicating readiness for operation.