It connects Blue connect to your router / network when you are without SIGFOX coverage *, so you can get the measurements from your pool or spa to your phone via your own Wi-Fi network.
Works with both Blue Connect Go and Blue Connect Plus Gold.
That’s how it works:
Blue Connect communicates with Blue Extender
Blue Extender connects to your network
Blue Connect sends data to your phone via your Wi-Fi network or mobile data
* SIGFOX is a network for data transfers. Blue Connect uses SIGFOX to transfer data from the meter to your phone via the Internet.