The Testo 400 is a universal measuring instrument for all TAB / Commissioning and IAQ professionals. Measure, analyze and document Air flow, air pressure,  IAQ and comfort level parameters using just one instrument – simply, conveniently and in compliance with the standards. High-quality measuring technology, intuitive measurement assistants, versatile documentation options and a comprehensive selection of air flow, comfort and IAQ probes.

Testo 400 kits are sold in various configurations with multiple probe options, including: Comfort Kit, Air Flow Kit, and IAQ Kit. CO₂ probe (with Bluetooth^® handle), turbulence probe with cable, globe thermometer with cable, vane probes, differential pressure probes, HVAC and air conditioning probes, hot wire, lux, CO, measuring tripod, Please call or add to Purchase Proposal to receive customized pricing options.