Features:UT681 HDMIis a professional tester for testing HDMI cable (HDMI 1.2V/1.3V/1.4V/2.0V). It can quickly scan and test up to 19 wires and decidewhich one is short circuit, open circuit, or in wrong order. It supports two test modes, fast scan mode and full displaymode. Three types of HD cables can be tested: a.Both endsare standard HDMI connectors (Type A - Type A); b.Both ends areHDMI Mini connectors (Type C - Type C); c.One end isHDMI connector, one end is HDMI Mini connector (Type A - Type C) Auto shut down function, when no operationduring the last 10 minutes, the instrument will automatically shut down. Specifications:Model: UT681HDMI Supported Connector: HDMI (type A); HDMI Mini (Type C) Scan Test Mode: 20 LED (LED1~LED8, LED_G) scan testFull Display Test Mode: 20 LED (LED1~LED8, LED_G) all light onContinuity Test: YesShort Circuit Test: YesCrossover Test: YesNetwork Cable Test: Sheilding/Un-sheildingAuto Power-off: After 10 minutes without operationPower Supply: 9V batteryOperating Temperature: 0℃~40℃ Storage Temperature:-10℃~50℃ Operating Humidity: 20%~80%RH Storage Humidity:10%~90% RH Altitude: Lessthan 2000 meters Weight: 175g(approx.)Package Includes:1 x Transmitter 1 x Receiver .