The image shows a man wearing a blue beanie and a brown jacket. He is standing in front of a white wall with a window. The man is holding a small device in his hand, which appears to be a thermometer. The thermometer has a green screen with the word "CO" written on it, indicating that it is a CO2 sensor. There are two green arrows pointing towards the thermometer, one on the left side of the screen and the other on the right side.