T-Echo Meshtastic Frequency:433MHz BME280 while the PCM5102 version can

while the PCM5102 version can be driven directly through the ESP32-S3

91 SSD1306

14- inch ST7789V HD LCD (support Arduino) display

you need to purchase the main control module separately and then use it together

With Shell Soldered Pin

T-Echo Meshtastic Frequency:433MHz BME280 while the PCM5102 version canFCC, CE, MIC certificates for T Echo Specification MCU NRF52840 FLASH 2MB RAM 2MB Bus Interfaces UART, SPI, TWI, PDM, 12S, QSPI Wireless Connectivity Bluetooth 5, Thread, Bluetooth Mesh, ANT, 802. 15. 4, Zigbee With Without BME280 temperature pressure sensor SX1262 LoRa Transceiver Long Range, Low Power Global frequency coverage 433, 868, 915Mhz Enclosure material ABS Version Normal version BME280 version Battry Capacity 850mAh 1. 54 inch SPI E Paper