testo Temperature Probe -20 to +50 °C with Bluetooth® Smartphone Connection, Flexible Probe (0563 4915)

Monitoring temperature in hard-to-reach or mobile environments often means being tied to a bulky handheld meter. This Bluetooth® temperature probe from Testo frees you from that constraint by streaming measurements directly to your smartphone or tablet. The flexible probe reaches into tight spaces, while the free Testo Smart App turns your mobile device into a live display and data logger.

Who is it for

HVAC technicians, food safety inspectors, laboratory staff, and field service engineers who need quick, accurate temperature checks without carrying a dedicated display unit. It is especially useful for spot checks in refrigeration, air conditioning, and process control where mobility and simplicity matter.

Main features

• Bluetooth® 4.2 connectivity with up to 100 m range (line of sight)
• Type K thermocouple sensor for fast, accurate readings
• Flexible immersion/penetration probe with 200 mm shaft and 3 mm diameter
• Measurement range from -50 to +400 °C with 0.1 °C resolution
• Powered by 3 AAA batteries, approximately 150 hours battery life
• Works with Testo Smart App on iOS 13.0+ and Android 8.0+

Specifications

• Sensor type: Thermocouple Type K
• Measurement range: -50 to +400 °C
• Accuracy: ±1.0 °C (-50 to -30.1 °C), ±0.5 °C (-30 to +300 °C), ±1.0 °C (+300.1 to +400 °C)
• Resolution: 0.1 °C
• Response time t99: < 5 s (in water)
• Probe shaft length: 200 mm
• Probe shaft diameter: 3 mm
• Operating temperature (instrument): -20 to +50 °C
• Storage temperature: -20 to +60 °C
• Protection class: IP40
• Housing material: ABS / TPE
• Power supply: 3x AAA batteries
• Battery life: approx. 150 hours
• Bluetooth® range: up to 100 m (line of sight)

Tips

For the fastest response, immerse the probe tip at least 50 mm into the medium. The flexible shaft can be bent to reach awkward spots, but avoid kinking it sharply. Keep the instrument within Bluetooth range of your phone for reliable data transmission, and replace all three AAA batteries at the same time to maintain performance.