![testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd](https://static-int.testo.com/media/82/bb/7d31835394f7/testo-440-dP-back_master.jpg)
testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd
![testo 440 CO₂ Kit with Bluetooth<sup>®</sup> | Multi-function | CO,CO₂,light and sound | Parameters | Testo Ltd testo 440 CO₂ Kit with Bluetooth<sup>®</sup> | Multi-function | CO,CO₂,light and sound | Parameters | Testo Ltd](https://static-int.testo.com/media/52/ab/2988c90e8171/testo-440-0632-1551-CO2-probe-with-Bluetooth-incl-temperature-and-humidity-sensor-V2-en_master.jpg)
testo 440 CO₂ Kit with Bluetooth<sup>®</sup> | Multi-function | CO,CO₂,light and sound | Parameters | Testo Ltd
0563 4412 | Testo 440 Laboratory Kit Data Logging Air Quality Meter for Temperature, +400°C Max, Battery-Powered | RS
0560 4402 | Testo 440 dP Data Logging Air Quality Monitor for Air Velocity, Temperature, +1370 (Temperature-TC) °C, +150 | RS
0560 4401 | Testo 440 Data Logging Air Quality Monitor for Air Velocity, Temperature, +1370 (Temperature-TC) °C, +150 | RS
![testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd](https://static-int.testo.com/media/86/db/8e8494500895/testo-440-dP-k-factor-de_master.jpg)
testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd
![testo 440 CO₂ Kit with Bluetooth<sup>®</sup> | Multi-function | CO,CO₂,light and sound | Parameters | Testo Ltd testo 440 CO₂ Kit with Bluetooth<sup>®</sup> | Multi-function | CO,CO₂,light and sound | Parameters | Testo Ltd](https://static-int.testo.com/media/6d/c1/db86de91d7b7/Set-0563-4405_master.jpg)
testo 440 CO₂ Kit with Bluetooth<sup>®</sup> | Multi-function | CO,CO₂,light and sound | Parameters | Testo Ltd
![testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd](https://static-int.testo.com/media/f4/f2/759c29c839fe/testo-440-dP-bottom_master.jpg)
testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd
![testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor | Portable devices - with solid probes | Portable devices | Product type | Testo Ltd](https://static-int.testo.com/media/b9/bf/a33d7db02d23/testo-440-dP-side_master.jpg)