4GHz ISM band operation 1
Bluetooth 5 (LE)
Both the CC1101 chip and the antenna are designed to operate at frequencies in the 300-348 MHz
1 X LoRa32
54 pitch expansion port (for user to design and integrate different functional expansion modules
T-Echo Card Frequency:868MHz 4GHz ISM band operation 1Please note that the default firmware currently does not support NFC. Specifications MCU NRF52840 FLASH 1MB RAM 256kB Wireless Bluetooth 5, Thread, NFC, Bluetooth Mesh, ANT, 802. 15. 4, Zigbee LoRa SX1262, Long Range, Low Power Support Bands 400~520MHz, 830~945MHz Display 0. 42 inch OLED I2C, Resolution: 72 x 40, Driver: SSD1315 GNSS Module L76K, Support: GPS, GLONASS, BeiDou, QZSS, Multi system joint positioning + AGNSS Motion Sensor ICM20948 Low