Lamps work great. As soon as it gets dark, they turn on. They turn off at dawn. Outdoor lighting from dusk to dawn is way better than annoying motion sensor lights. I chose these Dusk Till Dawn lamps instead of the photocell that is directly on the outer box because I have had issues with photocells in the past. These bulbs (I installed 3) have been installed for about 1 month. They work great. I had an issue with one of the bulbs (it failed after 1 day) but I contacted Sunco and they immediately sent a replacement. Good service. And they've worked great ever since.