100,000ppm MH-Z16 NDIR CO2 Sensor with I2C/UART 5V/3.3V Interface for Arduino/Raspeberry Pi

Bus Pirate v3b LCD Adapter Kit

MG-811 CO2 Gas Sensor Module

Unable to connect to an IC2/UART interface board or the adjoined sensor - Networking, Protocols, and Devices - Arduino Forum

SC16IS750 I2C/SPI to UART Bridge Module

Products Sandbox Electronics

MG-811 CO2 Gas Sensor Module

MG-811 CO2 Gas Sensor Module

I2C Passive Extender/ Patch Board

Breakout Shield for Arduino UNO or AIRduino

Arduino Nano Clone 5x Pack

LoRaGo PORT – Multi-channel LoRaWAN Gateway

I2C DS1307 RTC/Real-Time Clock Module

AIRduino – Wireless Programmable Arduino