A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal.
Package includes:
1 x 1 Channel 5V Relay Module without Optocoupler
Reviews
There are no reviews yet.