Thermo-hygrometers with dew points are used to accurately measure temperature and relative humidity in an environment. Our product measures from -20° to 70°C x 0.1° and 0% to 100% RH x 0.1%, it also shows the temperature readings in °C or °F on its 35mm Hi-contrast LCD display with backlight. They simultaneously display the humidity and temperature readings and the data hold freezes the displayed measurements giving you plenty of time to record the results. Auto power off after approximately 15 minutes ensures the battery and the device have a long lifespan. To make sure you aren't caught out with a dead battery when out using the device, there is a handy low battery indicator, and this allows you to be prepared with a spare battery. Our product is perfect for accurately measuring the temperature and humidity of an environment, we supply them with a soft carry pouch and a battery; they also have FREE UK Delivery.