With light coupling Relay Module
The board with four fixed screw holes all round, hole diameter is 3.1 mm, convenient installation and fixed
Loose relay, relay selection of quality single pole double throw. A common end and a beginning, a normally closed end
Optical coupling isolation, anti-interference performance is good
Shipping list: 1 * 5V 2-Channel Relay Module with Blitser Card

Technical Details

Product Details

Package Dimensions
Width : 3.94 inch
Height : 1.38 inch
Length : 4.57 inch

Shipping Weight: 1.28 ounce (View shipping rates and policies)

ASIN : B01IR66MTQ