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Products > YO Airflow Pro
YO Airflow Pro
LoRaWAN Helium
Enclosure type • IP67
Band • EU868, US915, AU915, AS923
light grey
Certificate CE
quote request


YO Airflow Pro provides differential pressure data for ventilation systems, making it possible to identify when air filters need replacing. Thus, users can make decisions based on objective parameters rather than on visual inspection or scheduled replacement times.

By analysing differential pressure data, it is also possible to control pressure in air conditioning systems, control and monitor airflow and control circulation fans.

The device is used in the HVAC industry, gas boilers, pellet stoves, fuel cells, filter monitoring and heat recovery.

The device communicates wirelessly over LoRaWAN. We are a member of the LoRa Alliance, which is responsible for data transmission security.

Key features

  • Measures differential pressure data in ventilation systems
  • Helps identify when air filters need replacing based on objective parameters rather than a scheduled replacement time
  • Battery-powered
  • Long battery life
  • Sensors available for multiple measurement ranges (standard: from -500 Pa to +500 Pa)
  • Very simple, non-invasive mounting
  • Supported LoRaWAN network type: private or public and connection over ABP or OTAA
  • ISM band selectable for regional needs (EU868, US915, AU915, and AS923)
  • Configuration over Bluetooth Low Energy 5.0
  • Firmware update over BLE
  • Yosensi Configuration Web Tool for convenient firmware updates and device configuration
  • Wide network coverage and low energy consumption
  • High-quality product made in EU

Sample charts of collected data



Tx Power: • LoRa EU868: to +14 [dBm]
• LoRa US915, AU915, AS923: to +22 [dBm]
• Bluetooth Low Energy (BLE): -20 to +6 [dBm]
Power: • 3 x AA battery (3 x 1,5 V)
Power consumption: • Maximum: 120 mA DC (4,5 V DC)
Weight: • 248 g (without batteries)
• 318 g (with batteries)
Certificates: CE


Dimensions: • Height: 42 mm
• Width: 88 mm
• Depth: 64 mm
Colour: Light grey (RAL 7035)
Installation: Select between:
  • Horizontal
  • Vertical (can be screwed to the wall)
Enclosure material: ABS
Level of protection: IP67
64 mm88 mm 42 mm

Sensors measuring range

Differential pressure:

Measuring range: -500 Pa to 500 Pa
Accuracy: 0,1 Pa + 3% of reading (at temperatures between –20°C and 85°C (-4°F to 185°F))
Media compatibility: Air, N2, O2


Measuring range: –40°C to 125°C (-40°F to 257°F)
Accuracy: ±0.2°C (32.36°F) (at temperatures between 5°C and 60°C (41°F to 140°F))

Relative humidity:

Measuring range: 0% to 100%
Accuracy: ±2% (at 20% RH to 80% RH)


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