The testo 622 thermo 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. The testo 622 thermo hygrometer - complete with practical details The testo 622 comes with both a wall and a table mount so that you can decide where best to put it. The thermo hygrometer and barometer provides you with all the information you need on the ambient air temperature and pressure and the relative humidity. The compact design, the large, easy-to-read display, the rate at which the meter carries out measurements and a battery life of up to 12 months ensure that your testo 622 is well-equipped to monitor the ambient air and provide you with accurate and reliable results. The batteries are easy to replace.