
Testo · testo 400
testo 400 ventilation measurement kit with hot-wire probe
Ideal kit for professional HVAC technicians, designed especially for volume flow measurement. You receive the testo 400 universal IAQ and air flow measuring instrument with intuitive measurement menus, a hot-wire probe head (with temperature and humidity sensor), a vane probe head (Ø 100 mm) and a high-precision humidity and temperature probe head – all three mount on the supplied Bluetooth® handle. For measurements on ceiling outlets, simply combine the 100 mm vane probe with the telescope (extendable to 1.0 m) and the 90° elbow.










