Feature:1. AUTOMATIC IDENTIFICATION AND MEASUREMENT: After turning on, the multimeter can measure AC and DC voltage, resistance, on off, and automatically identify gear changes.2. AC VOLTAGE MEASUREMENT: Red and black test pens touch neutral and live wires respectively, and the screen automatically displays the AC voltage value.3. DC VOLTAGE MEASUREMENT: Red and black test pens touch the positive and negative poles of the battery respectively, and the screen automatically displays the DC voltage value.4. RESISTANCE MEASUREMENT: Red and black test pens touch both ends of the resistance, and the screen automatically displays the resistance value.5. ON OFF TEST: When the test pen contacts both ends of the tested route, the channel will emit an alarm sound. If there is an open circuit, there will be no response.Specification:Item Type: Auto MultimeterMode: TA806AMaterial: ABSResistance: 1 -40M/ (1.2% reading+5 words)On Off Test: 1 -50 Display Digit: 4 digit display, maximum 4000Sampling Rate: 3 times/secondOver Range Display: The highest display is "OL"Automatic Shutdown: 15 minutes (can be manually turned off)Operating Environment: -10 to 50 , maximum relative humidity of 80%; Indoor altitude less than Approx. 2000m / 6561.7ftStorage Environment: -10 to 50 , maximum 70% relative humidity (with battery removed)Battery: 1.5V AAA battery x 2 (without battery).Package List:1 x Auto Multimeter2 x Test Pen 1 x Manual