Multi-Function Tester: Quick Test HDMI Cable (HDMI 1.2V/1.3V/1.4V/2.0V) and Network Cable (RJ45) The Main and Remote Unit: The Mini HDMI/LAN Cable Tester consists of a main unit and remote unit. The remote unit stores conveniently on the side of the main unit Advantage 1 for HDMI Cable: This HDMI tester can quickly scan and test up to 19 wires and decide which one is short circuit, open circuit, or in the wrong order. Supported Connector: HDMI (Type A); HDMI Mini (Type C) Advantage 2 for Network Cable: For cables with RJ45 Connector (battery/charger not included). The LED lights will flash in rotation if all the wires are properly connected, otherwise the corresponding light will not flash Power Source: The main unit can be powered by a single 1.5V AAA battery or using your phone's USB charger power supply This is a great little Therathy HDMI Cable & Network Cable Tester

Multi-Function Tester for HDMI Cable and Network/ Phone Cable
Remote unit can be detached from the main unit, allowing you to quickly and easily test HDMI cables that are installed or very long

HDMI Tester is a professional tester for testing HDMI cable (HDMI 1.2V/1.3V/1.4V/2.0V)
Scan Mode allows you to see each individual connection being tested
Precision test and evaluates HDMI cables for shorts, open circuits, or incorrect wire pairings for each wire pair

Network/Phone Cable Tester is for cables with RJ45 Connector (battery/charger not included).
The LED lights will flash in rotation if all the wires are properly connected, otherwise the corresponding light will not flash.
Even a novice can complete the network installation work like a professional as per use's manual included