Features 1Bluetooth Module: The Bluetooth module is an accessory of the solar controller. When users need to display the operating parameters of the controller through the APP they need to purchase the Bluetooth module separately. The controller sends the operating parameters to the mobile phone through the blue module and displays them through the dedicated APP. 2Clear in Display: The Bluetooth module is connected to the solar controller and the dedicated mobile phone APP can be connected to the charger through Bluetooth to display various charging parameters historical data and fault information of the charger in real time. 3Quick Connection: Insert the connecting line of the Bluetooth module into the special Bluetooth interface of the solar controller with Bluetooth communication function and then fix the module at any position. 4Reliable Working: The bluetooth transmission distance can get up to 10 meters and the stable signal ensures faster response and easier control. 5Premium Material: Adopting premium ABS material the Bluetooth control module is not likely to malfunction and very durable for long use. Specification Item Type: Solar Charge Controller Bluetooth ModuleMaterial: ABSWorking Voltage: 5V provided by the controller. Model: BT10Bluetooth Version: 4.2Bluetooth Distance: <10m / 32.81ftInterface tType: XH2.54-4PAPP: for Charge ConnectFunction: Bluetooth module. Weight: 89 g / 3.14 oz(approx.) Package List 1 xSolar Charge Controller Bluetooth Module1 x User Manual