Testo 440 Combo Kit 2 Bluetooth 100mm Vane Probe and 16m Vane Probe auto-reminder-hr155 2mm deep with 90mm connection

2mm deep with 90mm connection

41 Total Exterior and Interior pockets

'X' suffix models also have powered electric anti-backdraught shutters 258312

Low profile design for easy storage and transport

with silver under-visor

Testo 440 Combo Kit 2 Bluetooth 100mm Vane Probe and 16m Vane Probe auto-reminder-hr155 2mm deep with 90mm connectionBenefits Comprehensive IAQ Measurement Measures all IAQ parameters, including flow velocity, temperature, humidity, pressure, CO2, CO, and more. Versatile Dual Probe Setup Combines a slim 16 mm vane probe for ductwork with a 100 mm vane probe for outlets, ensuring full airflow measurement coverage. User Friendly Operation Clearly structured measurement menus make setup, recording, and analysis quick and intuitive for all common HVAC applications.