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Raspberry Pi 4 Model B 4B Aluminum Alloy Case with Fan Heatsinks
ESP32-C3-1.28
ESP32 C3 Development Board 1.28inch Round LCD Display Screen WiFi Bluetooth Module
USB-Adapter
Raspberry Pi 5V3A Power Adapter USB Interface US Standard Power Charger
RS232-TO-RS485-422
Industrial-grade RS232 to RS485/422 Active Digital Isolated Serial Converter SP3232EEN SP485EN
R800C-GSM/GPRS-HAT
Raspberry Pi 4 Model B 4B R800C GSM / GPRS HAT 2G Communication for Arduino / Jetson Nano / STM32