Header Male and Femal The function of the connector is to act as a bridge between blocked or isolated circuits within the circuit and to perform the task of current or signal transmission. The spacing can be roughly divided into 2.54mm / 2.00mm / 1.27mm / 1.00mm / 0.8mm. Universal connectors used in electronics, electrical appliances and instruments, mainly for current or signal transmission. Usually used in conjunction with a row of needles to form a plate-to-board connection