Description What is the difference between X1 and X2? X1 is 3 in 1 design, voltage tester+multimeter+flashlight X2 is 4 in 1 design, infrared thermometer+voltage tester+multimeter+flashlight BSIDE Integrated infrared thermometer X2: The voltage detector integrated infrared thermometer greatly enhances the testing experience, which is very suitable for HVAC applications, automobiles, grills, etc. Color LCD display: The BSIDE color LCD display greatly improves the reading experience. The numbers and letters with a bright black background light up, making it easy to read even in bright sunlight or under low light conditions. 8 LED indicators: 8 LED indicators in 3 colors make it easy for you to judge the detected voltage intensity. 3 Result Display: The high-resolution large-screen three-line display can display 3 test results, voltage, frequency and analog bars on the screen. Integrated multimeter: The design of the integrated multimeter of the voltage detector not only greatly expands the test application range, but also allows you not to worry about the multimeter taking up too much space. X2 Specifications: Display: 2000 counts DC Voltage: 500V 0.01V (0.8%+3) AC Voltage: 500V 0.01V (1.2%+5) Resistance: 10M 1 (1.2%+3) Frequency: 1000Hz 1Hz (2.0%+3) Temperature: 0-380(2.5%+2); -20-0(2.5%+3); -4-716 Distance to Spot Ratio: 6:1 Continuity: If the resistance le than 30, the beeper sounds V-Alert (Non-contact Voltage Detection): Yes Power: 1.5V AAA x 2 (not included) Size: 181*31*28mm Weight: 87g Package Includes: 1 x X2 Voltage Detector 1 x Test Leads 1 x Case 1 x User Manual Note: The batteries are not included in the package due to Aviation Security Check. Sorry for any inconvenience caused.