Received my trigger this morning just two days after ordering. The Chinese/Anglo instructions leave a little to be desired but, quite frankly, you don't need them. Just put the batteries in (supplied) and connect to camera and, in my case, studio flash, set the same channel on each unit, turn the receiver on and start shooting. Worked with flash and as a camera trigger first time, every time even through three brick walls. I have used IR triggers (four in all) up to now and they've all failed after a short time. This unit seems a fantastic bargain at the price. Highly recommended.