199 Levels 12v Relay Spot Welding Machine Control Board Diy Accessories Kit for Lithium Battery Ni-mh

Description

199 speed adjustment: Digital tube real-time speed display. There are 199 levels of power. Product introduction: Concave-conyex spot welding machine, stable, reliable, convenient and durable. Transparent protective shell: Beautiful and safe to prevent leakage components from touching short circuit damage to the control panel. 199 Speed Relay Spot Welder: Users need to supply power by themselves. For common 0.1-0.3mm nickel plating sheet welding.