1. The electric shock position of the intermediate relay has the function of loading. If the load capacity required by electrical appliances is small, small contactors can be used instead, such as small household appliances and electric rolling shutters. At this time, the small contactor can not only play a better control role, but also save more space.

2. The intermediate relay can not only be used for connecting components, but also can be connected with other intermediate relays, so that the number of connection points can be increased, and more troubles can be solved in life. In addition, you can also expand the capacity of the relay by connecting another intermediate relay to ensure normal use.

3. In many control circuits, intermediate relays are used to turn on and off the electrical appliances. For example, a color TV is used indoors, and its triode can well control the intermediate relay, thereby controlling the on and off of the internal degaussing coil. In addition, the intermediate relay can effectively shield some interference to ensure normal operation.