Specifications: Brand: UNI-T Model: UT681HDMI Supported Connector: HDMI (type A); HDMI Mini (Type C) Scan Test Mode: 20 LED (LED1~LED8, LED_G) scan test Full Display Test Mode: 20 LED (LED1~LED8, LED_G) all light on Continuity Test: Yes Short Circuit Test: Yes Crossover Test: Yes Network Cable Test: Sheilding/Un-sheilding Auto Power-off: After 10 minutes without operation Power Supply: 9V battery Low Voltage Test: Yes Operating Temperature: 0?~40? Storage Temperature: -10?~50? Operating Humidity: 20%~80% RH Storage Humidity: 10%~90% RH Altitude: Less than 2000 meters Weight: 175g(approx.)Package Includes: 1 x Transmitter 1 x Receiver