The high-voltage capacitor discharge pen features a constant current discharge design and is compatible with both AC and DC applications without requiring polarity identification. The gold-plated precision tip test probe is securely connected and allows flexible use in various scenarios. During normal discharge operation, the green status indicator light remains illuminated. When the light turns off, it indicates that the energy stored in the capacitor has been discharged to a safe level. This tool is ideal for power supply maintenance and the safe discharge of high-voltage energy storage capacitors. The pen tip is removable; if the wire becomes damaged, it can be easily replaced. The circuit design is optimized for safe and reliable operation, allowing connection to the capacitor terminals without concern for positive or negative polarity—simply connect to both poles of the capacitor. Color: Black & Red. Material: Plastic. Package Contents: 1 x Capacitor Discharge Pen. Note: Other items shown in images are not included. Lighting effects and display settings may cause slight variations in color between the product image and the actual item. Measurement tolerance is +/- 1-3 cm.