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Bought two of these. Work acceptably using a 5V regulated supply. Added 100k pull up resistor between + and AL wire terminals on the board to provide output signal swing between +5V and ground. They seem to require several (3 to 5) seconds to stabilize after power up and tend to re-trigger a bit after detected motion has stopped, but overall work pretty well. Field of view is around 90-100 degrees.
I was ready to discard these until i read the description and the one review. I hooked the black wire marked AL to a 555 timer wired as a retriggerable one - shot. Output from 555 high until no motion detected.