A digital AC thermometer is a device used to measure the temperature of air conditioning systems. It is a very useful tool for monitoring the performance of an AC system, as it can detect any changes in temperature and alert the user to any potential problems. The thermometer works by using a digital display to show the temperature of the air conditioning system. It is typically connected to the AC system via a probe, which is inserted into the air conditioning unit. The thermometer can then be used to monitor the temperature of the air conditioning system and alert the user to any changes in temperature. This is especially useful for detecting any potential problems with the AC system, such as a malfunctioning compressor or a clogged filter. Digital AC thermometers are a great way to ensure that your AC system is running at its optimal level, and can help to prevent any costly repairs or replacements.