Bluetooth ® Adapter in Connection with 750 Series The Bluetooth ® Adapter wirelessly connects a notebook computer with Bluetooth ® functionality to the service interface of the coupler/controller. It also provides an active connection to a programmable fieldbus controller. As a cable substitute, the Bluetooth ® Adapter allows communication between two fieldbus controllers, as well as between fieldbus couplers/controllers via WAGO software tools (e.g., WAGO-I/O-CHECK, WAGO-I/O-PRO). Configurable coexistence properties ensure trouble-free operation in the presence of other radio systems. Bluetooth ® Adapter in Connection with 857 Series The Bluetooth ® wirelessly connects a notebook computer with Bluetooth ® functionality to the service interface of a configurable 857 Series Module. As a cable substitute, the Bluetooth ® Adapter allows communication between Modules and WAGO software tool (WAGOframe) or configuration APP for Android-based end devices. If required, adapter configuration may be performed via AT commands. The adapter is supplied via both service interface and power supply of coupler/controller or Module.