Top positive review
Reviewed in the United States on November 20, 2020
If you have a Ring doorbell, this is a must to ensure increase security. When you link these Par38 light bulbs to the doorbell, as well as other Ring cameras, the lights will come on when motion is detected. There's a small delay though, hence the reason for the 4-star rating.
The installation instructions do not include the process to link the bulbs to doorbell or cameras though. To do so, just simply go to Ring app, select the device you want to link, i.e. doorbell, click on the link tab.
Again, I recommend them because of the layer of security they add to the Ring security system.