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1. Compact and portable, highly practical 2. Built-in fuse for easy use 3. Built-in blue backlight for viewing measurement data in both daytime and nighttime conditions 4. Convenient for testing and repairing in dark locations, and can also be used as a headlight 5. Suitable for electrical circuit fault detection in automobiles and commercial vehicles 6. Light display: LCD screen, front light 7. Measuring range: 0.01A-19.99A 8. Load (maximum): 20A/48V (DC) for 10 seconds 9. Weight: approximately 110g 10. Dimensions: tester 110x45x30mm; plug 75x36mm
Operational instructions 1. Turn off the vehicle's ignition. 2. Remove the blade fuse that comes with the tester from its socket. Then remove the vehicle's fuse from the circuit under test and insert it into the tester's fuse socket to ensure the correct circuit protection level. The blade fuse included with the tester is rated at 20A/48V, standard. 3. Insert the tester's plug (select medium or small depending on the size of the blade fuse. If using a small size, plug the end of the small plug into the medium plug) into the vehicle's fuse socket. 4. If necessary, turn on the vehicle's ignition to energize the circuit, then turn on the tester (press the power button) and measure the current. 5. The display will show the measured current of the circuit under test. 6. If the display shows "DC," the circuit under test is positive current. If the display shows "DC," the circuit under test is negative current. 7. When finished, turn off the tester (press the power button again).
Notes: 1. This tester is only for vehicle current testing. 2. During testing, the blade fuse may become hot. Please wait until it cools before touching it. 3. Do not exceed the tester's load: MAX 20A 48V/10 seconds. 4. Turn off the vehicle's ignition switch before connecting or disconnecting the tester. 5. Do not disassemble the tester or modify its circuitry. 6. Always keep the tester dry. 7. Do not pull on the tester cable, and do not use a malfunctioning or damaged tester.
