Here's a step by step guide: (1). Download our "LTDoorbell" app in Google Play or iOS App Store; (2). Launch the app and register a new account; (3). Turn on LTDoorbell devices and connect them with "LTDoorbell" app; (4). Configure these devices in "LTDoorbell" app and change the appropriate name for your devices; (5). Download the Amazon "Alexa" app in Google Play or iOS App Store, and cocnnect Echo with "Alexa" app; (7). Search the Alexa Skills directory for "LTDoorbell"; (8). Click Enable skill of "LTDoorbell", then input your userename, password on the login page; (9). Talk to Echo "Alexa, discover devices". Wait till Echo says "Discover is completed"; (10). Now all setup is done.
Here are the voice commands "LTDoorbell" has:
Doorbell: "Alexa,discover my devices." "Alexa,show me the doorbell."