Hello! I want to connect two 8 channel relays (https://tomtop_game.guphotos.com/i/w?u=/images/H/H9449/H9449-4-6a30.jpg) safely to my pi 3. Each one requires about 160mA on 5V. 5V takes the power directly from the supply so should be no problem, there are two 5V pins but I saw this 16 channel relay (...