Use The Hobbes Innovation HDMI Cable Tester to check and troubleshoot your HDMI cables before you install them. Designed to test almost every pin connection of standard type "A" HDMI connectors, it instantly indicates continuity status using 9 LED indicators. Remote and linking cable are included, requires one 9V battery, not included. The HDMI Tester is ideal for testing continuity of each signal pin of an HDMI cable prior to installation on equipments.