Product Introduction: 1. Encoder flexibly adjusts welding strength.Paired with 8AWG silicone welding wire 2. Adjustable screen display of current size, welding pulse, interval, and spot welding count 3. Battery voltage display.If the current exceeds 2000A, MOS protection will be triggered and the current measurement function will be incorrect. 4. Support foot switch(Wire socket 3.0mm) 5. Adopting 5 brand -power MOS, MOS boost circuit drive, ensuring MOS stability, paired with 2 filter capacitors, high-performance anti-interference MCU Important note: 1. This product only includes the control board and elding pen, and does not include the power supply, battery, or aircraft model battery 2. Support voltage 7V-14V, current 200A 3.The following power supplies can be used to power the XQ01: Lead-acid battery 12V 20AH-200AH (20AH must be a new power supply, otherwise the internal resistance will be too ) Model aircraft high-rate lithium battery 45C 12.6V 3300mah or more 2.7V 3000F supercapacitor 3-6 in series (voltage cannot exceed 15V) Emergency power supply, car starting power supply 12.6V, capacity above 5000mah Note: The voltage used by the spot welding machine is 6-15V. Remember not to exceed 15V. 4. Attention: Reverse connection of the positive and negative poles of the power supply can burn out the control board About the screen display problem in the setup, please buyer understand: 1. The screen image is slower than the encoder response, if you rotate the encoder quickly, it will cause the screen display to repeat, so please rotate the encoder slower! 2. If it has caused the screen display duplication, then there are two ways to solve: Adjust the encoder to the bottom of the settings to save, it will be restored; Hold down the encoder, and then rotate it to the left, it will be restarted to restore! Material: plastic colour: Blue Package Contents: 1 x Mini Spot Welder Control Board 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.