III. Usage :Voltage calibration:The module has voltage compensation function, so the voltage calibration must be carried out when the first machine is installed, and in , as long as the module power transformer is not replaced, there is no need to recalibrate. Of course, when you feel that the display voltage is wrong and it can be calibrated. The following are the mains voltages that are not calibrated and displayed during operation<P>Pay attention to the safe use of the high voltage part during installation. When the usage frequency and power are high, silicon control rectifier requires external radiator to disspate heat.The power of the module driving load depends on the power of silicon control rectifier (). BAT41 (40A) can carry a oven transformer, BAT100 (100A) can carry two oven , and the recommended one for Loop transformer is 100A.<P>Precautions for use:This module DIY needs to have certain electrician , if you are complete freshman, refer to the electrician's you . Do not know the welding time and power of the welded parts, it is recommended that the welding time and power be adjusted from small to upper to avoid damage to the welding pen.Fault cause and troubleshooting,The electricity supply does not match the actual electricity voltage: re-voltage calibration.<P>The solder joint is not or soldered: adjust welding time and power until satisfactory results are achieved.Can be set to save the last operation, the module double pulse trigger, turn off any trigger time, you can change double pulse to single pulse trigger.The main board and the display operation panel are separated, and the outer casing can be flexibly assembled.<P>With grid voltage compensation, the output of compensation can be automatically adjusted according to the of power supply, and the electric voltage of about 1 second can be displayed when triggered, so that the effective heat of welding is with the welding parameters, and the welding spot is uniform.<P>DIY or simple battery welder d