Arduino Relay Shields UK (i.e. 5V Quad Relay Module) is a small current signal control power equipment commonly used electronic module, enabling high-power single-chip control devices are widely used in SCM system to make smart home project; and can be directly
plugged into the Arduino compatible the use of various types of motherboards, eliminating the patch cable troubles.
Price:-£4.90
Website:-https://kunkune.co.uk/shop/arduino-raspberry-pi-sensors/arduino-compatible-4-channel-5v-relay-shield/
