The original replacement cost almost 3 times. After seeing the reviews (even more) read that also expensive brand equipment often leave after much too short a time, I like to have resorted to this very inexpensive product. Delivery was immediate. Pack on, put device in the mounting hole, connected, fixed with a screw. Fits all at once, no readjustment required aperture already on the device off, work, looks good. Just so should it be> 5 Steren. How long does the device to be seen ... but for the money !!