This is the wifi gateway hub for Amelech dimming controllers and other Zigbee products. The hub is the communication between app and your controllers. One hub can control up to 500 separate controlling units at a time within a 200m range. To use the app from outside of 200m you must have a constant internet wifi connection through an ISP. Now days in 2017, most businesses and homes have a more than capable wifi system ready to easily connect the Hub to and have control from anywhere in the world. The hub can also be operated to use it’s own wifi signal(non internet) to communicate with the app within 200m, and is great for locations that don’t have any internet connections but still want automation functions and control while on site.