Temperature sensor: cylindrical waterproof probe 10K 3950 1% sensor total length about 1 meter Temperature measurement range: -40-120 (external temperature measured by sensor). Time measurement range: 0-999:59:59 (hour: minute: second) Working energy consumption: 20mA (measured at DC12V) Support: Accumulated data clearing, no-load forced , voltage display fine-tuning, current display fine-tuning Percent power display: percentage power based on voltage reference (full power and low power voltage need to be manually set) Name:9-in-1 Measuring Instrument 10A direct measurement,no external shunt required Operating Mode:Automatic Model Number:DC Energy Power Meter Display Type:Digital display Input/output interface:10A 10A Technical Parameters: Instrument working voltage: XH-3P red and black wire DC4-30V (do not overvoltage power supply) Introduction to wire definition: Thin red wire: positive pole of working power supply, cannot be connected to power supply above 30V Thin black wire: the negative pole of the working power supply, which shares the ground with the thick black wire. It does not need to be connected when the power supply is shared. Thin yellow wire: voltage test wire, connected to the positive pole of the test circuit power supply -3.96-2P thick red and black wire (thick wire total length: 165mm) current test wire, thick wire connected in parallel with shunt resistor, cannot be directly connected to the two poles of the power supply, it cause a short circuit Voltage measurement range: DC0-100V error 1.00V 0.1V starting Current measurement range: 0.00A-10.00A error 0.1A 0.03A start Power measurement range: 00.00-1000W Capacity measurement range: 0-9999999mAh Energy measurement range: 0-9999999mWh Colour:Black Material:Plastic Package Contents: 1 * multifunctional tester 1 set * measuring wires 1 * temperature sensor 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.