AtlasIED C-T4BT Atmosphere™ Bluetooth Wall Controller | WhiteThe AtlasIED C T4BT is a wall mounted controller for Atmosphere audio systems that combines user control and local Bluetooth audio input in a single 2 gang device. Its 4. 3 inch programmable touchscreen is designed to simplify access to zones, source selection, and user actions, while the capacitive slider provides a familiar way to adjust level from the wall. For projects that need a cleaner interface than a rack or software only workflow, the C T4BT