See product description for all features
http://numato.com/us/16-channel-usb-relay-module.html#yt_tab_downloadsanddocs

Technical Details

Product Details

Package Dimensions
Width : 4.9 inch
Height : 1.3 inch
Length : 9 inch

Shipping Weight: 0 ounce (View shipping rates and policies)

ASIN : B00MY0IE84