The probe is equipped with a high-precision, long-term stable humidity sensor from Testo and delivers precise measurement results. With its extended temperature and humidity measuring range, the process probe is also ideal for demanding applications. The duct bracket, the plug-in system and the digital interface all make installation, commissioning and probe replacement exceptionally quick and easy for you.1 x testo 6613 humidity and temperature probe with fixed cable (selectable lengths 1, 2, 5 or 10 m), including factory certificate.