Built-in Sub-GHz module based on a CC1101 transceiver and a radio antenna (the maximum range is 50 meters). RFID: 125/134KHz (BF) and 13.56MHz (HF) Both the CC1101 chip and the antenna are designed to operate at frequencies in the 300-348 MHz, 387-464 MHz, and 779-928 MHz bands. Specifications MCU ESP32-S3 Dual-core LX7 microprocessor Flash 16MB Programming Platform Arduino-ide、 ESP-IDF RSRAM 8MB Onboard functions Reset + Boot Button , IR Transmit & Receive Bat voltage detection IO04 Wireless Wi-Fi 802.11 b/g/n，BLE 5  1.9 inch ST7789V IPS color TFT LCD Interface SPI Drive Chip ST7789V Resolution 170(H)RGBx 320(V) --- Tech Support---    ℹ️Product InformationCheck out our GitHub repository for sample code and more detailed information about this board.  🧑‍💻Technical supportVisit our GitHub community, post a description of the problem and our engineers will help you directly. What's In The Box