Digital Test Meter Voltmeter Amperemeter Multimeter Voltage No Bluetooth Description: Body size is less than 2 fingers, easy to wear. Portable multifunctional tester voltage and current protocols. The data information protocol control update supports monitoring and recording of voltage and current curves. Combining bluetooth app, voltage, current and real time, and can be controlled with permission, browse through 10 sets of performance statistics and performance calculations. At the same time, a surge current alarm can be set in the application. Currently only Android phones; normal version without bluetooth function. There are many types of mobile phones and operating systems, so there may be incompatibilities. Specification: Material: electronic component; Monitoring Voltage: 4-24V Monitor voltage resolution: 0,00001 V Voltage accuracy monitoring: (0,2‰and2) Monitoring Current: 0-6,5a Display Current Resolution: 0,00001A Current accuracy monitoring: (0,5‰and2) Current display resolution: 0,00001 W Equivalent load resistance: 0-9999,9Ω Equivalent load resistance resolution: 0,0001 Ω Equivalent load resistance accuracy: (0,5‰and2) Capacity: 0-9999,99 Ah Voltage Dand/D-: 0-3,3V Voltage resolution Dand/D-: 0,001 V Voltage accuracy Dand/D-: (1,0%and2) Size Chart: Size: 5x2,5x0,8 cm / 1,96x0,98x0,31 inch The package includes: 1 piece Tester USB-C ammeter voltmeter protocol