The ETI Pocked-Sized Hygrometer is perfect for when you need to measure temperature and humidity in the field. Its convenient pen-shape makes it extremely portable and it will easily fit into a pocket or bag. It also has a useful pocket clip so it can always be conveniently to hand. This hygrometer is very popular with bat workers for measuring the temperature and humidity in bat roosts.
A clear LCD displays temperature and humidity simultaneously and will also supply maximum and minimum readings. It has a long battery life of up to 6000 hours.
Powered with 1 x CR 2032 lithium battery (included).