Finds weaknesses in the insulation of your home and provides you with the information you need to make your home more energy efficient. It detects cold and thermal bridges by infrared measurement, making it suitable for both old and new buildings to enhance the efficiency of heating and air conditioning. The application is simple: set the reference temperature at the touch of a button, direct the LED color target point to the questionable spot, and the result is displayed in real time (less than 1 second) in degrees and by color change. Green light indicates the reference temperature, blue light indicates cooler than the reference temperature, and red light indicates warmer than the reference temperature. Sensitivity can be adjusted to three levels. The measuring range is from -30 to +150°C, with a distance to measuring field diameter ratio of 6:1 meter. The display can show temperatures in °C or °F. Battery type: 9V alkaline.