& OOTDTY Features:1. Wide choice of welding power supply: lithium battery power or 12V car battery.2. The controller is controlled by a single microcomputer IC, and the output pulse is accurate to ensure the welding quality.3. With LCD screen, it can display the welding parameters.4. The welding pen and the input line are connected by U-shaped cold-pressed clamps, which is convenient for disassembly and .5. Using welding mode automatic touch, keeping manual trigger interface, you can choose according to your own use.6. The power strip uses 2 Gusi copper to increase the overcurrent capacity.7, using 5 x 300A MOS tubes, unassembled MOS tubes.8. The MOS tube driver adopts imported special driver chip. The fastest MOS pipe can be hit by 20nS. The switch is quick to prevent the tube and push-pull drive from exploding without triode.9. The MOS drive design adds a transient diode to protect the MOS and prevent the tube from exploding.10. 10AWG multi-core flexible cable is used to weld feather line and input line to increase overcurrent capacitance.11. The controller is mainly for welding nickel galvanized steel strips from 0.1mm to 0.12mm.12. A 25V10000uF high-frequency low-resistance capacitor is added to the power input to compensate for energy, which increases the stability of welding. Only spot welding equipment set, other accessories demo in the picture are not included. Instructions for use:1: power connectionThe controller is equipped with a 10AWG input cable with a length of 20cm. One end was crimped with a U-shaped tip, and the other end was not processed. Connect the U-shaped crimp terminal to the input terminal of the power control, and the other end is processed according to its own power supply. Do not connect the negative electrode wrong.2: Switching on and offThere is a power switch under the control board. Wait 3 seconds after pressing. When the buzzer drops, the LCD will light up and the boot will be completed. Press the power switch again to turn off.3: Screen description and parameter adjustment.4: WeldingKeep the welding mandrel clean. If the welding mandrel is polished into a round head, the welding effect can be improved. There are manual and automatic methods. Specification: Material: Metal Input Line Length: app.20cm/7.87in Welding Pen Length: app.30cm/11.81in Color: Red + Blue + Black Battery: 18650 Lithium Battery (Not Included) Quantity: 1 Set Note: No retail package. Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents:1Pc x Controller2pcs x Welding Pen2pcs x Power Input Line (Red & Blue)1 Pair x U-Shaped Cold Pressed Clamp (Used to Connect to Input Power)Several Heat Shrink Tubes, Used to Reduce Power Input Line