Testo infrared thermometer 835 t1 835 t2 835 h1 testo 0560 8353 with the 835 h1 infrared thermometer from testo you can perform temperature and moisture measurements on walls monitor and check air conditioning and ventilation systems service and inspect industrial systems and ensure constantly high levels of quality in production processes are maintainedthis is the ideal all round device for a wide range of industrial and commercial applications use it to carry out measurements on smal