Black Digital Thermometer with External Probe (1 m, 2s refresh)

Perfect

They work great for my K40 laser cooling.

Great Value; Works as Described

What a nice bargain! These simply work, exactly as described. Indeed, they only display in Celsius, but that is fine for me. Batteries are included and they work straight out of the pouch. I am using one to monitor the heatsink on a piece of equipment, and another for outdoor temperature. After several weeks, no problems.

This thermometer performs well!

Each time I have used this thermometer I have been extremely happy. Very easy to read, use and clean. The probe itself is a good length.

Nice and simple

Units had an overall 2 degree variation at room temperature. 3 were only off by .3 Centigrade. For keeping an eye on refrigerator and freezer they are great.

Great product

This is accurate & easy to use.

Great for measuring temperature changes, but need to be calibrat

Once calibrated, the difference between the displayed temperature and an accurate scientific thermometer was constant across the portion of the operating range I tested ( 18-50°C ). So you only need to calibrate once and mark each with a correction factor to get acceptably accurate temperature readings. Amazing value for casual temperature monitoring.