Cdi 3102 Welding Stud Machine provides maximum charging energy thanks to inverter-capacitor charging technology. Inverter capacitor technology has a higher cycle sequence with 30% energy. The welding unit ensures reliable welding even on critical surfaces and allows very fast welding from 1 to 3 milliseconds. Thanks to impact resistance and integrated network filter, it can be used for construction sites. The unit is protected to IP 23 from foreign objects and splash water. The digital LED display allows easy operation and reading even under sunlight. Resource memory can be used with the library function. Temperature-controlled cooling fan reduces noise and dust. By reconnecting the welding current and ground wires, it is possible to change the welding voltage polarity without problems. The most prominent features of the Cdi 3102 welding unit are the microcontroller, function monitoring, display of error codes and library function.