The teste 622 thermos hygrometer and barometer is ideal for monitoring the ambient air. The meter measures the air temperature, relative humidity and the air pressure at a rate of once every ten seconds and displays the values – including the time and date – on the large easy-to-read display. A visual LED alarm alerts the room’s occupants when a threshold has been exceeded. Allows you to keep an eye on ambient air values, especially in laboratories during calibration or when running experimental setups.