Features 【Multifunctional Digital Multimeter】This electricity meter can simultaneously measure and display six electrical parameters: voltage, current, active power, energy, frequency, and power factor. 【Easy to Use】One button can reset the power supply; You can also turn on or off the backlight by briefly pressing the button; The use of split type current transformers makes installation more convenient. 【More Safer to Use】Overload alarm function, when an over power alarm threshold is detected, the backlight and power supply flash to alarm; The power alarm threshold can be preset according to different needs. When the power is turned off, the voltmeter will automatically save data. 【Additional Current Splitter】Equipped with a current divider of 100 A/75 mV, suitable for large-scale measurement. Widely used in daily household appliances, high and low distribution cabinets, inverter power supplies, electrical maintenance, factory assembly line testing, photovoltaic systems, etc. 【Some Precautions】The wiring sequence must be correct, otherwise it will cause damage; The added load cannot exceed the rated power; The intrinsic safety meter is suitable for indoor use and cannot be used outdoors. Features: 1. UT681 HDMI is a professional HDMI cable tester for testing 1.2V/1.3V/1.4V/2.0V. 2. It can quickly scan and detect up to 19 wires, and judge which wires are short-circuited, open-circuited, or connected incorrectly. 3. Supports two test modes, fast scan mode and full display mode. 4. Compatible with multiple imnterfaces: A. Both ends are standard HDMI interface (Type A-Type A); B. Both ends are HDMI Mini interface (Type C-Type C); C. One end is HDMI interface, the other end is HDMI Mini Interface (Type A Type C) 5. When the battery voltage is lower than about 7.2V, the blue light will flash, prompting to replace the battery. The instrument will automatically shut down when there is no operation for the last 10 minutes. Specifications: 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（Without 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（Without battery) Package List 1 x AC Multifunction Digital Meter 1 x Closed Type CT