Arduino Uno, Arduino Mega compatible shield.
4 SPDT mechanical relays.
ULN2003 IC is to drive relays.
Individual LEDs are available for indicating the relay state.
See product description for all features

Technical Details

Product Details

Package Dimensions
Width : 3.2 inch
Height : 1 inch
Length : 4.8 inch

Shipping Weight: 2.4 ounce (View shipping rates and policies)

ASIN : B00NXK9I52