TESTO 0563 4402 testo 440 Lux-Set

HVAC technicians and facility managers use the testo 440 Lux-Set to measure illuminance and air velocity in offices, production halls, and cleanrooms. The set includes the testo 440 dP instrument and a digital lux probe, enabling quick verification of lighting conditions and ventilation performance.

Key specifications

• Lux measurement range: 0 to 100,000 Lux
• Lux accuracy: ±3 % of mv (±1 digit)
• Integrated differential pressure sensor
• Bluetooth and USB connectivity
• Internal memory for up to 7500 measurement protocols
• Large graphic display with backlight
• Operating temperature: -20 to +50 °C

Why choose it

The testo 440 Lux-Set combines a high-precision lux probe with a versatile handheld instrument. The universal handle accepts all Testo digital probes, allowing you to expand the system for temperature, humidity, or airflow measurements as needed.

Ideal use cases

• Workplace illuminance assessment according to standards
• Verification of ventilation system performance
• Spot-checking lighting in warehouses and retail spaces
• Multi-parameter IAQ measurements with additional probes

Good to know

The instrument stores measurement data and transfers it via USB or Bluetooth for analysis. Powered by three AA batteries, it offers up to 12 hours of operation. The lux probe responds in less than one second, ensuring efficient spot measurements.