Ryobi RP4030 Infrared Thermometer Review
The Tek4 4V Professional Infrared Thermometer delivers a constant readout of temperatures ranging from below 0 to over twice the boiling point of water. We found that this tool is most accurate when you are less than 2 meter from your target, but the tool can also measure from quite a distance away. The key to using it correctly is to understand that it has a 10:1 spot-to-distance ratio, so the closer you are, the smaller your measurement sample and the less it will be affected by the surrounding air temperature. This is an incredibly handy tool, especially for air mechanical inspectors and installers.