Introduction:  T-Solar uses the new lora system chip ASR6505.  The ASR6505 is based on the 8-bit MCU and SX1262 SiP chip, which is more cost-effective than the 32-bit MCU   One of the biggest features of T-Solar: solar powered design   The solar power supply interface is reserved on the board, which can be directly connected to the 5.5v-7.5v solar panel. With the lithium battery, the system can be operated continuously until the battery is scrapped        Chipset: ASR6505;  CPU: STM8L152;  LoRa: SX1262;  Frequeccy: 150MHz-960MHz;  Maximum Power: +21dBm constant RF output;  RX Sensitivity: -140dBm;  Embedded memory: Flash 64KB, SRAM 4KB, EEPROM 2KB;  Peripherals: 30x configurable GPIOS, 1xIC, 2xUART, 1xSWIM: 1xSPL, 3xADC;  RX mode Currrent:  <10mA;  TX mode Curent: <85mA@22dBm;  <40mA@17dBm;  <30mA@14dBm;  Deep Sleep Mode Current:  <1uA Without RTC;  <1.6uA With RTC;  Temperature:  Storage: -55-125°C;  Operating: 40-85°C;  Humidity: Storage: 5-95% (Non-Condensing);  Operating: 10-95% (Non- Condensing);  Charging Current: 780ma;  Charging: TP4056;  Charging status: Red light on, Green light off;  Voltage full state: Red light off, Green light on;  Undervoltage: Red light off, Green light off;  Battery temperature is too high or too low state: Red light off, Green light off;  No battery access: Red light off, Green light off;  BAT terminated with 10u capacitor, no battery: Flashing red light (T=1-4S) ,Green light on;  Function: The solar power supply interface is reserved on the board, which can be directly connected to the solar panel of 5.5~7.5V. With the lithium battery, the system can continue to operate until the battery is scrapped.     Package includes:  1 x T-Solar Development Board.