Feature: and high quality easy to use perfect for automotive or commercial vehicle circuit fault finding Fast measurement speed and high precision Measuring range: 0.01A~19.99A Maximum Load: 20A/48Vdc for 10 seconds maximum Circuit Accuracy: (2% of reading + 2 digits) Fuse Type Power Supply: Standard Power supply: 12V 23A (included) Working conditions: Temperature 0C~40C Relative humidity: Less than75% Storage conditions: temperature -10C~50C relative humidity Less than80% Operation instruction: turn off the vehicle engine Take the fuse and place it in the AE150s slot. Please make the circuit protection is correct. (The tester detects that the fuse is 20A/48V, standard type) Insert tester plug into vehicle fuse socket If necessary, first start the vehicle engine and energize the circuit. Then press the power switch to turn on the detector When under test, operate the circuit, and the display will display the measured current Press the power button again to turn off the tester when the measurement is complete Material: plastic colour: As shown Package Contents: 1 x Automotive Current Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.