A great addition to your brewing arsenal. An easy to ready LCD stick-on Thermometer. Fix one to each of your fermenters and brewing buckets so you can see at a glance that the temperature is correct for a healthy fermentation. Simply peel of the backing paper and stick. Covers the range 14-32 DegC. l have also put one of these on my aquarium so l easily check that the fishes are nice and cosy.