Yesterday I fitted an outside light for a customer and also a friend. The fitting itself was chosen by the customer from a famous diy outlet beginning with B and ending in Q. It is a type that goes dim in standby mode and goes to full brightness when it detects movement. It has three little red adjustment screws under the ' eyelid ' of the sensor. The instructions state that when adjustment is made you turn one screw fully anti clockwise and the other one fully clockwise and from here you can gradually adjust the sensor so the light will come on at dusk when you want it to. When I was turning the screws they kept turning, I would have thought that they would come to a stop but light was working and customer said see how we go with it. I spoke to the customer this morning and he said that when he got home late last night the light was coming on and off all the time. I suspect a faulty unit. He will change it today for me to fit tomorrow when I'm over that way..Anyone else had experiences with these type of lights..