This is a circular connector that uses DIN 45 321 standard, meets IEC-22 standard, can be installed from the front, and screwed from the back. The technical parameters are application class GPE, temperature -40 degrees Celsius to 85 degrees Celsius, relative humidity 75%, material PA GV, contact CuZn, 3 microns silver and flash gold, 12-pole version pre-nickeled and 0.8 microns gold plated, housing zinc die cast, copper coated and nickel plated, installation method welding port.