1. At the same time, it can test the insulation voltage of the object. Such as switches, keys, connectors between the two pins of the insulation voltage test. 2. Insulation test between windings is also very convenient, such as motor, power frequency transformer, high frequency transformer, phase to phase insulation, insulation test of the shell core. 3. Widely used to measure: NIMOS/PMOS/IGBT/ Triode/unidirectional thyristor/voltage regulator diode/light emitting diode/rectifier bridge/varistor/ceramic gas discharge tube/electrolytic capacitor/voltage withstand value. Parameters: Voltage display accuracy: 0.3% Output voltage error: 50V, resistance error, Adjustable output current: 50uA-5mA Output mode: constant voltage, constant current output Maximum power of the entire machine: 5 Voltage meter resolution: 0.1V below 100V, 1V above 100V Battery capacity: 700mA lithium battery Charging current: 550mA Charging interface: TYPE-C (red light for charging, green light for full charge) Charging adapter: 5V1A mobile phone charger can be used for charging Protection function: 80 over temperature protection (high temperature blue light) Lithium battery undervoltage: Blue light when the battery is below 3.3V the label words on the product are random, Cannot be chosen the specific words. The actual product may have slight differences or color differences. 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:Photo Color Material:ABS Package Contents: 1 x Transistor Voltage Tester 1 x Test lead accessories 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.