My first one was way off, so I brought it in for service and they gave me a new one. This one works good ok but I only use it for quick temp checks that I am not really concerned of it's accuracy. I also own a Fluke that I carry in my toolbox for work and this is my primary unit. I also have a Fluke thermal imaging camera that I use when Imaging is needed, but my unit that cost almost $3000.00 Has really let me down when it comes to the tempo readings. This Milwaukee unit has a 10:1 distance-to-spot ratio measures a 1 ft. spot from 10 ft. way If you need real accuracy you may want to spend more money and get a Fluke Handheld Infrared Laser Thermometer with a Better distance-to-spot ratio like one that Offers a distance-to-spot ratio of 50:1 But big $$$$$$
Read the Product Overview, it explicitly tells you the answer to your question.
Cannot be calibrated
One problem could be the distance you are measuring from. Remember 10:1 distance to spot ratio meas for every 10 inches measures one inch area. So If the pipe is Less than an inch and you are 10 inches away then you will measure the air around it and will average out the temperature giving you the wrong temperature. If you are measuring round areas I recommend you buy the STEELMAN PRO STI-241 (79041) Thermal Imaging, it will give you a more accurate temperature.
Yes it can pick up temps on most surfaces
Mode Description: MAX Displays maximum temperature measured during a continuous reading MIN Displays minimum temperature measured during a continuous reading AVG Displays average temperature of last 20 measurements during a continuous reading DIF Displays the difference between MAX and MIN during a continuous reading
yes it will I have the same problem at my new home, every time I run hot water down the kitchen sink the tile gets warm in the hallway
I would say, be sure you have a good battery properly installed. If the light doesn't come on then, you may have a defective unit.