Very expensive for a lightbulb but has exceeded my expectations. I waited until it was in use for over a month before posting this review to make sure it kept working. It has. I'm using it for my front porch which has a high ceiling (about 11') with a recessed can fixture. This really fit the bill as I didn't have any other option with that kind of fixture for motion sensing operation. I live in Michigan & we've had an early cold snap which didn't affect its operation at all. My son parks in the drive & comes in from work every night & it's worked flawlessly! It's really nice because it comes on when anyone gets within about 8' of the porch then stays on for about 3 minutes as promised. Was pleasantly surprised that we don't trigger the lamp from inside the house. I've got a large transom window above the front door & two side light windows. We can walk past the door & thankfully, the light doesn't come on. All I can hope is that it's got longevity. Works great in conjunction with my Ring Video Doorbell&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Ring-Wi-Fi-Enabled-Video-Doorbell/dp/B00N2ZDXW2/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Ring Wi-Fi Enabled Video Doorbell</a>