The Testo 915i wireless thermometer with its flexible Type K probe is a real game-changer for quick and easy temperature measurements on the job. It’s built for flexibility, letting you snake that probe into spots rigid ones just can't reach, like through small gaps, drill holes, or behind tight panels.

Anyone who's jammed a rigid probe into a tight duct or behind a compressor knows the frustration. This setup connects straight to your smartphone via Bluetooth, making logging and reporting a breeze while you're out in the field.

Best For

• HVAC service and maintenance technicians
• Refrigeration mechanics
• Commissioning and testing engineers
• Competent DIY owners checking system performance

Compatibility

The Testo 915i handle is designed to work with the included flexible Type K thermocouple probe. It's also fully compatible with all other Testo plug-in Type K probes and many standard Type K thermocouple probes you might already have in your kit. For data display and reporting, it connects wirelessly via Bluetooth to your smartphone or tablet using the free Testo Smart App. It can also link up with other compatible Testo measuring instruments, such as the Testo 400, Testo 550s, and Testo 557s manifolds, expanding your Smart Probe system. This unit is approved for use in environments with A2L/A3 refrigerants.

If you're running a different model, check fittings and specs before ordering.

Features

• Wireless Operation: Bluetooth connectivity to your smartphone, tablet, or compatible Testo instruments up to 100 metres away for flexible working.
• Flexible Type K Probe: Comes with an 800 mm (2.6 ft) fibreglass-coated cable, perfect for bending into tight, hard-to-reach spots.
• Wide Temperature Range: Accurately measures from -50 °C to +400 °C, suitable for a broad array of HVACR applications.
• High Accuracy: Factory system calibration ensures reliable readings with an accuracy of up to ±1.0 °C in common operating ranges.
• Testo Smart App Integration: Intuitive app for displaying real-time readings, graphical temperature curves, and easy documentation/reporting in PDF or CSV format.
• Universal Probe Compatibility: The handle features an innovative locking mechanism and works with all Testo and standard Type K thermocouple probes, making it highly versatile.

Technical Specifications

What's in the Box

• Testo 915i Wireless Thermometer handle
• Flexible Type K temperature probe (800 mm fibreglass-coated cable)
• 3 x AAA batteries
• Certificate of conformity

Using It on the Job

1. Install Batteries: Open the battery compartment and insert the three AAA batteries supplied.
2. Attach Probe: Connect the flexible Type K probe to the Testo 915i handle, ensuring the locking mechanism clicks into place for a secure fit.
3. Connect to App: Download the free Testo Smart App on your smartphone or tablet (iOS 13.0+ or Android 8.0+). The 915i will automatically connect via Bluetooth.
4. Position Probe: Carefully guide the flexible probe to the desired measurement point, utilising its bendable design for tight or hard-to-access areas.
5. Monitor & Log: View real-time temperature readings on your device, track temperature curves, and save data directly through the Smart App.
6. Generate Report: Use the app to create professional reports on site, ready to be sent as PDF or CSV files to clients or for your records.

Limitations & Safety Notes

• The flexible probe is designed for temperature sensing; avoid using it as a structural support or bending it to extreme angles repeatedly.
• While compatible with A2L/A3 refrigerant environments, always ensure proper ventilation and follow all safety protocols when working with refrigerants.
• Operate the thermometer within its specified ambient operating temperature range of -20 to +50 °C to maintain accuracy and device longevity.
• The device has an IP40 protection class; protect it from water ingress, heavy dust, and impacts.
• Always follow Australian electrical safety standards and general Safe Work Australia guidance when working on HVACR systems.

Tradie Pro Tip: When you're running that flexible probe into a duct, try to secure it so the sensing tip is in the middle of the airflow. Don't let it touch the duct wall, otherwise, you'll get a skewed reading from the surface temperature instead of the actual air temperature. It's a common mistake, but an easy one to fix.

Pair With

The Testo 915i is a great addition to your Testo Smart Probe kit. Pair it with Testo 550s or 557s digital manifold gauges for comprehensive system diagnostics, or grab a Testo Smart Case for secure storage of your probes and instruments when moving between jobs.