Features: It can identify component such as resistors/capacitors/diode/continuity , and has precise testing accuracy. It is a good helper for electronic and electronic maintenance. Easy to detect built-in diode, and can also test good product on the boards, lightweight and convenient. Use one CR3032 button battery, and after 20minutes of start up, the automatic shut down will save more power! Selects the capacitance measurement modes and touch both sides of the capacitance in the circuit board. Data Hold function,When the function key is pressed, the instrument stops refreshing test data and maintains the current test data. Pressing this key will return to the normal test state. Specifications: Material:ABS Resistance: 0 -30M Capacitance: 0nF-30mF Diode: Yes Buzzer: Yes Automatic shutdown: Yes Low battery prompt: Yes Display Count:3000 Data Hold:Yes Continuity Checking:Yes Working temperature and humidity: 0-40 (32-104 )&