Good quality, nice product.  Took a while to fit it as of course you need to get the power through the wall as well as fix it to an external wall and as it was a hot day the electrician was looking forward to a pint afterwards! The settings for daylight, night-time etc and the timer for how long it stays on for are a bit fiddly and if you want to make this an accurate time you might find it difficult.  But the sensor works fine and it looks really good. You could probably get one cheaper but I'm happy with this one and think the quality shows.