The Remote Control Transmitter is an important device for receiving signals. In addition to having a remote controller, you also need a Remote Control Transmitter. If you want to issue instructions to mechanical equipment, and the instructions are issued based on the operation of the remote controller, when the instructions are given, the signal will be sent to the Remote Control Transmitter and received to drive mechanical equipment, such as electric rolling door related application equipment. In summary, the remote controller must be matched with the Remote Control Transmitter, and both are indispensable.