Decription: Instructions: Click the button once to check the saved packet data (Time, Wh, mAh). Press and hold the button for 3 seconds to clear the current single set of saved data (Time, Wh, mAh) Parameters: 1.Voltage: DC4-30V 2.Current: 0-5A 3.Time: 0-99hours 4.Power: 0-150W 5.Capacity: 0-99999mAh 6. Electrical energy: 0-999.999Wh 7. Packet data:1-9 group 8. Temperature 9. Setup Key Included: 1 x USB Detector Voltmeter Ammeter