Features: 1. This Bluetooth module is an accessory of the solar controller, when the user needs to display the controller through the APP. 2. When working parameters, you need to purchase this Bluetooth module separately, and the controller can handle the work through this Bluetooth module. 3. The specifications are sent to the mobile phone and displayed through the dedicated APP. 4. Connection Method: 1. Insert the connection line of the Bluetooth module into the dedicated Bluetooth interface of the solar controller with Bluetooth communication function, and then just fix the module in any position. 5. Warm Note: The Bluetooth module can not be installed in a metal shielded place, and the distance from the mobile phone is less than 10 meters. Note: 1. Mobile phone operating system requirements: install version 5.0 or above, for IOS version for iphone4.0 or above. 2. The Bluetooth adapter cannot be installed in a metal shielded environment. 3. Please make sure that the Bluetooth function and location information of the mobile phone are turned on. 4. The APP must be run before the device is connected, the APP will automatically search for the device, click the device name to connect to Bluetooth. 5. The distance between the Bluetooth adapter and the mobile phone must be less than 106. Only one mobile phone is allowed to connect to Bluetooth at the same time, and the mobile phone needs to be connected, and the connected mobile phone must be exited from the APP. 7. Some mobile phones may need to search repeatedly to find the device. Specifications: Model: BT10 Bluetooth version: Bluetooth 4.2 Working voltage: 5V (provided by the controller) Standby power consumption: <500uA Length of connection line: 3 meters Bluetooth distance: <10 meters Interface type: XH2.54-4P Size: about 67*35*20mm/2.64*1.38*0.79inch APP name: for ChargerConnect Packing List: 1*Solar Controller 1*Bluetooth Module