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After re-soldering a faulty terminal, tested acceptable
Edit 2: down to 2 points for lack of available pinout information, lack of clarification on the role of a jumper and lack of a direct way - contrary to the seller's claim - to drive the board from raspberry gpio pins without soldering on a bunch of additional transistors
Minus a point for the site where spec sheet is demanding that i upgrade my browser, which i have no intention of doing, and for not including the specs in the package
In any case, the board demands +5v on the rightmost pin in the array, ground on the leftmost, and individual relays 1-8 are activated by shorting pins 2-9, respectively, to the ground