这种继电器分为线圈部分和底座部分，接线是接在底座部分。

接线要按照线圈部分的标识来接：

向左转|向右转

端口与底座的接线柱是一一对应的。

这个继电器是多功能的。具体接法需要根据你的实际需要来接。即你想实现不同的功能时就有不同的接法。

继电器原理都是一样：一个输入端，两个控制端（线圈）一个输出端，当控制端有电流流过。线圈产生磁力拉动了触点吸合或者断开。

从而实现了输入与输出之间的导通与断开。因为控制端是用低压，而输入输出可以接高压，所以它也是一种实现低压控制高压的器件。

The relay is divided into coil part and base part, and the wiring is connected to the base part.

The wiring shall be connected according to the identification of the coil:

Turn left | turn right

The port corresponds to the terminal of the base one by one.

This relay is multifunctional. The specific connection method needs to be connected according to your actual needs. That is, when you want to realize different functions, you have different connection methods.

The relay principle is the same: one input terminal, two control terminals (coils) and one output terminal. When there is current flowing through the control terminal. The magnetic force generated by the coil pulls the contact on or off.

Thus, the conduction and disconnection between input and output are realized. Because the control terminal uses low voltage, and the input and output can be connected to high voltage, it is also a device to realize low voltage to control high voltage.