Bluetooth: You can control your gates even when WiFi is not available at your gates or when the internet service is down.
Wi-Fi: Connect Remootio to your home WiFi and control your gates from anywhere within your house. In this mode, no data goes through the internet.
Internet: You can control and monitor your gates from anywhere in the world.
 
No external bridge or hub is needed. It's all built into the device. 
It also works in parallel with your traditional remote controller.