best home security
Excellent video doorbell. Offers remote control of door locks, cameras, thermostats, and sensors. Responsive touch screen. No lengthy contract required. Cons: Requires a monthly subscription for remote access. Cannot customize alarm sounds.
alarm for business
If you purchased a used Nest cam, you should make sure it's on the latest firmware version, which will fix this issue.
fall detectors
ADT was first a part of Western Union, then ATandT.