TDR-TA3.7USB is a complete functional analogue of the TDR-307 at a much lower price and size.

TDR-TA3.7USB designed to work in complex with PC.

TDR-TA3.7USB is a 2-channel cable locator, designed to determine the nature and location of a fault in any type of metallic cable lines. You can even use a TDR-TA3.7USB to troubleshoot and measure all types of twisted pair, coaxial and power cables, both aerial and underground.