HiLetgo SGP41 TVOC eCO2 CO2 Carbon Dioxide Sensor Formaldehyde Air Quality Monitoring Sensor Indoor Air Quality Gas Sensor Module GY- SGP41 SGP41 TVOC eCO2 CO2 Carbon Dioxide Sensor
Thermoelectric Heatsink Cooler Plate – High-Efficiency Heat Cooling side is the side printed with SP1848-27145, another side is the heat absorption side.
ESP32 WiFi Bluetooth Dev Board – Arduino Compatible & Low Ultra-Low power consumption, works perfectly with the Arduino IDE
ESP32 WiFi & Bluetooth Dev Board – Low Power Arduino Ultra-Low power consumption, works perfectly with the Arduino IDE
HiLetgo ENC28J60 ENC28J60-I/SO HR911105A Ethernet LAN Network Module SPI Interface 3.3V for Arduino AVR PIC LPC STM32 The board 25MHZ crystal