Small and light, easy to carry. Fast discharge without sparks is suitable for DC voltage discharge below 800V. Discharge does not distinguish between positive and negative poles. The 4-digit 8888 digital tube displays the residual voltage and can be used as a voltmeter. Uses: switching power supplies, digital cameras, TV power boards, high-voltage large electrolytic capacitors, etc. Function: discharge capacitors to protect products and operators from electric shock. Discharge voltage range Less than 800VDC LED color: blue Max. Discharge energy (joules): 150J Input port: 4mm banana socket. Probe cover material: antifreeze PVC. User Guide: Insert the red and black probe tips into the 4mm banana socket. The red and black probe tips touch the two pins of the capacitor, without distinguishing between positive and negative poles. The voltmeter will display the remaining voltage of the capacitor. When the voltage is around 10V, the LED display turns on and off. At this time, the probe should continue to discharge for about 10 seconds, and then it can be discharged below 5V. How to convert AC voltage to DC voltage: The voltmeter displays DC voltage. If it is AC voltage, it should be converted to DC voltage by simple calculation. AC voltage = voltage displayed on the voltmeter/0.9 (conversion factor is 0.9) Le. g: If the voltage on the voltmeter is 207VDC, the actual AC voltage is 207VDC/0.9=230VAC Colour:As Shown Material:ABS Package Contents: 1x Capacitor discharge meter Kit 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.