Identifies weaknesses in your home's insulation and provides you with the information you need to make your home more energy-efficient. It detects cold and thermal bridges through infrared measurement, making it suitable for both old and new buildings to improve heating and air conditioning efficiency. The application is simple: set the reference temperature with the push of a button, aim the LED color target at the area in question, and the result is displayed in real-time (in less than 1 second) in degrees and through 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 measurement range is from -30 to +150 °C, with a distance-to-measurement field diameter ratio of 6:1 meters. The display can show temperatures in °C or °F. Battery type: 9V alkaline.