Which Bluetooth class is the G30/ G30³ Controller? The Bluetooth chip used in the G30 controller is Class 2 which means it has a 10 metre (32.8 ft) range. Related articles Why does the G30 / G30³ Controller connect via Bluetooth rather than WiFi? Video - Quick How to Guides on Setting Up and Brewing with the G30 Firmware V5.2 (52) Counterflow Chiller vs Immersion Chiller - what's the difference? Do you need internet when brewing with the G30 / G30³ Bluetooth controller?