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Testo Hot Wire Probe (Digital, with Bluetooth®) – Including Temperature and Humidity Sensor

SKU: 0635 1571

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Testo Hot Wire Probe (Digital, with Bluetooth®) – Including Temperature and Humidity Sensor

The Testo 0635 1571 Bluetooth Hot Wire Probe is a premium digital air velocity sensor designed for precise measurement of airflow, volume flow, temperature, and humidity in ventilation ducts. It combines cutting-edge accuracy with the freedom of wireless Bluetooth® communication, ensuring maximum convenience and flexibility for HVAC professionals and laboratory engineers alike.

With a measurement range of 0 to 30 m/s and built-in absolute pressure compensation, the probe delivers consistent, reliable readings. Its integrated humidity and temperature sensors allow simultaneous monitoring of key air parameters, reducing setup time and improving overall efficiency.

The extendable telescope (up to 1 m, scalable) enables easy measurement in ducts of various sizes and geometries. For large-scale applications, the probe can be extended up to 2.0 m with an optional extension. A high-contrast scale ensures visibility even in low-light environments.

A practical handle button allows direct interaction with your measuring instrument—storing readings, starting or stopping measurement series, and controlling timed averages without touching the device. The rotatable sensor protection cap guards the delicate hot wire sensor when not in use, ensuring durability and long-term accuracy.

Thanks to Testo’s intelligent calibration concept, only the probe head requires calibration, not the instrument—minimizing downtime and ensuring a zero-error display.

Testo Hot Wire Probe - Key Features

  • Wireless Bluetooth® connection with a range of up to 20 m
  • Measures air velocity, temperature, humidity, and volume flow simultaneously
  • Integrated absolute pressure compensation for accurate results
  • Hot wire velocity range: 0 to 30 m/s with ±(0.03 m/s + 4% of mv) accuracy
  • Extendable telescope (1.0 m standard, optional 2.0 m) with scale markings
  • Ergonomic handle with direct function button for convenient operation
  • Rotatable protective cap to safeguard sensors from damage or dust
  • Digital calibration for zero-error measurement and continuous use
  • Compatible with Testo 400, 440, and 480 multifunction instruments

Testo Hot Wire Probe - Specifications

Parameter Specification
Product No. 0635 1571
Sensor Type Digital Hot Wire with Temperature & Humidity Sensors
Velocity Range 0 to 30 m/s
Velocity Accuracy ±(0.03 m/s + 4% of mv) (0–20 m/s)
±(0.5 m/s + 5% of mv) (20.01–30 m/s)
Velocity Resolution 0.01 m/s
Temperature Range -20 to +70 °C
Temperature Accuracy ±0.8 °C (-20 to 0 °C), ±0.5 °C (0 to +70 °C)
Temperature Resolution 0.1 °C
Humidity Range 5 to 95 %RH
Humidity Accuracy ±2 %RH (35–65 %RH), ±3 %RH (10–35 %RH / 65–90 %RH), ±5 %RH (remaining range)
Humidity Resolution 0.1 %RH
Absolute Pressure Range +700 to +1100 hPa
Absolute Pressure Accuracy ±3.0 hPa
Absolute Pressure Resolution 0.1 hPa
Telescope Length 1,000 mm (extendable to 2.0 m with optional extension)
Probe Head Diameter 9 mm
Telescope Diameter 16 mm
Probe Shaft Diameter 9 mm
Probe Shaft Length 230 mm
Bluetooth Range Up to 20 m
Battery Type 4 × AA batteries
Battery Life Up to 21.5 hours
Weight 400 g
Dimensions (L × W × H) 780 × 50 × 40 mm
Operating Temperature -5 to +50 °C
Storage Temperature -20 to +60 °C
Data Transfer Bluetooth® wireless connection
Color Black / Orange

 

Data sheet testo 440

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Data sheet testo 400

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Instruction manual testo Air velocity and IAQ probes with Bluetooth® handle

Download

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DISPATCH TIME -1-3 Days

METRO TRANSIT TIME- 2-4 Days

TRACKING NUMBER- Provided

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Email: sales@advancedtools.com.au

Phone: 08 7083 9862

Head Office: Unit 5/45 Bunnett St, Sunshine North, VIC 3020 (office only - no shopfront)

Business hours: Monday - Friday 9am-5pm ACDT (Melbourne)

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