Wide communication range: The BT02 Module supports a communication distance of up to 20 meters, providing a strong and reliable connection between the module and your device for seamless operation. Compatibility: Compatible with both Android and iOS systems, offering flexibility and convenience for users with different devices. This module supports a wide range of smartphones and tablets. Multiple Battery Compatibility: Designed exclusively for Series & Brand For MPPT Solar Charge Controllers, this adapter supports various battery types, including acid (For /ForGEL(ForAGM)/ForFlooded), lithium (For LiFePO4/ LiNiCoMnO), and userdefined batteries. Enjoy versatile charging options for different battery chemistries with ease. Flexible Load Control Modes: Includes four load control modes to choose from, including Manual mode and light control, enabling you to the charging process according to your specific needs. Effortlessly manage and control the power flow for charging performance. Use scenarios: 1) Offgrid solar system management: Monitor and control charging of MPPT solar battery banks from your mobile device within a 20meter Bluetooth range, using the BT02 Module to optimize charging cycles. 2) Mixed battery chemistries in small installations: Use the four load control modes to tailor charging for acidbased (GEL/ AGM/ Flooded) and lithium (LiFePO4/ LiNiCoMnO) batteries, plus userdefined batteries, without changing hardware. 3) Remote or mobile applications: In an RV, boat, or cabin setup, rely on Bluetooth connectivity to view charge status and adjust settings on iOS or Android devices from a distance up to 20 meters.