testo Temperature Probe -20 to +50 °C with Bluetooth and Air Probe (0563 3915)

Measure air temperature from -20 to +50 °C with ±0.5 °C accuracy and view readings on your smartphone via Bluetooth. The probe connects to the Testo Smart App, offering a 100 m line-of-sight range and 150-hour battery life.

Overview

The testo 0563 3915 is a wireless temperature probe with an NTC air sensor. It transmits measurements to the Testo Smart App on iOS or Android devices, eliminating the need for a separate display. The probe tube is 100 mm long and 12 mm in diameter, suitable for air temperature checks in HVAC, refrigeration, and laboratory environments.

What stands out

• Bluetooth connectivity to smartphones with up to 100 m range
• High accuracy of ±0.5 °C across the full range
• Long battery life: approximately 150 hours on three AAA batteries
• Compact air probe with 100 mm tube length
• Adjustable measurement rate up to 1 reading per second

Technical details

• Measurement range: -20 to +50 °C
• Accuracy: ±0.5 °C
• Resolution: 0.1 °C
• Sensor type: NTC
• Probe type: Air temperature probe
• Connectivity: Bluetooth 4.2 or higher
• Bluetooth range: up to 100 m (line of sight)
• App compatibility: Testo Smart App (iOS 13.0+, Android 8.0+)
• Power supply: 3 x AAA batteries
• Battery life: approx. 150 hours
• Operating temperature: -20 to +50 °C
• Storage temperature: -20 to +60 °C
• Protection class: IP40
• Probe tube length: 100 mm
• Probe tube diameter: 12 mm
• Measurement rate: 1 measurement per second (adjustable)
• Response time (t99): 60 s in air
• Display: no integrated display (app-based)

Our verdict

This probe is a reliable choice for professionals needing accurate air temperature data with the convenience of smartphone logging and analysis.