There are a lot of different locks and doorbell cameras that work with Amazon Echo, and it really depends on what you're looking for in a device. If you want a simple, effective way to lock and unlock your doors, as well as see who is at your door, then we recommend the August Smart Lock Pro + Connect. This locks works with Amazon Echo, allowing you to use your voice to lock and unlock your doors. You can also see who is at your door, and even talk to them, using the August Doorbell Cam Pro.
If you're looking for a more comprehensive security system for your home, then the Ring Alarm system is a great option. This system includes a base station, keypad, contact sensor, motion detector, and range extender, and it can be controlled using your voice with Amazon Echo. With Ring Alarm, you can arm and disarm your system, as well as receive alerts when someone enters or leaves your home.
Ultimately, it really depends on what you're looking for in a lock and doorbell camera. If you just want a simple way to lock and unlock your doors, as well as see who is at your door, then the August Smart Lock Pro + Connect is a great option. If you're looking for a more comprehensive security system, then the Ring Alarm system is a great option.