Review on Baomain Continuous Industrial Buzzer for Enhanced Warning Signals by Jeho Odor

item received but i understand some or many of these items are from china but even the chinese should definitely ask for instructions and which wire goes where for this item, I don't understand why can't a simple piece of paper with instructions be added to the package, even if it's chinese or korean or where it's from, I'm pretty sure they ask for instructions with everything they buy