BRAND NEW in Factory Plastic Bag With Room Stickers With Batteries Original RC66RX RF/IR DIRECTV Remote Controls. The RC66RX Remote Control Will Work On These DirecTV Receivers:H20, H21, H22, H23 ...

About The Smart Environmental Monitoring System uses the STM32F401RE with MQ135, DHT11, and LDR sensors for real-time air quality, temperature, humidity, and light monitoring. Built with HAL libraries ...