Scroll down to compare compatible Arduino Relay Shields at different stores and find the best price.
A Relay Shield provides an easy way to control relays with the Arduino. The relays allow you to control high voltages with low voltages, like the ones provided by the Arduino header pins.
Ebay.com
Aliexpress.com
€8.99
1 new
from €8.99
as of May 27, 2018 4:59 am
Amazon.es
€12.00
1 new
from €12.00
as of May 27, 2018 4:59 am
Amazon.de
as of May 27, 2018 4:59 am