1.Adopting high quality plastic material, LED digital tube high display, stable performance and high efficiency. 2. Voltage measurement range: DC0.000-100.0V Error ±1.00V 0.1V jump. 3. Current measurement range: 0.000A-10.00A Error ±0.1A 0.03A . 4. Power measurement range: 0.000-1000W. 5. DC voltage, current, power real-time testing, the same screen display, clearly recognizable. XH-2.54-3P red, black and yellow wire (thin wire Total length: 155mm) Thin red wire: positive pole of the working power supply, can not be connected to the power supply above 30V. Thin black wire: negative pole of the working power supply, and thick black wire site, do not need to be connected when sharing power supply. Thin yellow line: voltage test line, connected to the positive pole of the test circuit power supply. -3.96-2P Coarse red and black wires (thick wire total length: 165mm) current test line Thick wire parallel shunt resistance, can not be directly connected to the power supply poles, be short-circuited! Thick red wire: current test positive pole, string in the negative end of the load, connect the broken line after the first break! Thick black wire: current test negative, connected to the negative terminal of the power supply, connected to the broken line first after the break! Connect the shunt: on-board low temperature drift alloy resistor shunt, according to the wiring diagram, direct wiring can be used! Note:Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Black Material:plastic Package Contents: 1 x Voltage current power meter 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.