Bluetooth Locks

Bluetooth is a common smart-lock protocol because it doesn’t burn through battery life as quickly as Wi-Fi does. After all, it’s not like you can plug your deadbolt in, and who wants to change the batteries on a door lock every month? With Bluetooth, your lock’s batteries should last a year or longer.

The downside to Bluetooth is that your range is somewhat limited — roughly 300 feet in a best-case scenario, and probably a lot less than that depending on how your home is laid out. It’s enough to control your lock while you’re at home, but wander too far afield and you’ll lose the connection.