Description: 【Stability】: The control board features a digital display for great reading, and uses an encoder instead of a potentiometer for more accurate and stable adjustments, ensuring a longer lifespan 【Versatile Control】: Offers adjustable single and double settings with welding count, synchronous triggering, and power off memory functions 【Optimized Design】: Constructed with double sided soldering for a more rational component layout, making it easier to install on the machine's exterior casing 【Size】: Control Board 9 cmx6 cm/3.54 inchx2.36 inch; Outer Frame 10 cmx7 cm/3.94 inchx2.76 inch. Must be powered by Alternating Current (12V-17V). It is not suitable for DC power sources 【Features】: Adjust time from 0.01s to 1s for #1 and current from 10% to 99%. #2 can be set from 0s to 1s or disabled by setting it to zero, triggering only #1. The encoder knob rotates for adjustments and presses in to enter/save settings; numbers flash during adjustment for easy operation Specification: Material: Plastic Size Chart: Control Board 9cmx6cm/3.54inchx2.36inch; Outer Frame 10cmx7cm/3.94inchx2.76inch Package Includes: 1 Set  Welder Control Board  Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.