Description: 【Versatile Testing Capabilities】: This Refrigerator Compressor Tester is designed to adjust frequency and test various components, including 2 wire communication interface inverter boards, inverter compressors, 3 wire and 4 wire DC fans, bistable pulse solenoid valves, electric valves, single/double air doors, and fixed frequency compressors 【Digital display screen Design】: Inverter Refrigerator Tester Equipped with a digital display screen that clearly shows detected parameters for easy checking. The simple panel design ensures straightforward using for users of all experience levels 【Material】: Made from ABS material, this Pulse Solenoid Valve Inverter Compressor Tester is built to last. Its compact size of 15cm x 9cm x 6cm makes it easy to handle and store 【Waterproof and Dustproof Buttons】: Refrigerator Test Tool Features waterproof and dustproof buttons for reliable performance in various environments, ensuring longevity and consistent functionality 【Fault Tool】: Refrigerator Test Tool can help you accurately detect problems encountered in refrigerator repair and improve your work efficiency Specification: Material: ABS Voltages: 110V Size Chart: 15cmx9cmx6cm/5.91x3.54x2.36inch Package Includes: 1 Refrigerator Compressor Tester Set(US Plug) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.