Get a Fast Quote
🛠️ Need the Right HVAC Tool for the Job?
Whether you're quoting a bulk order or chasing hard-to-find tools, we’re here to help.
Get a fast, personalised quote—no pressure, no spam!
Fill out the form below and we’ll get back to you ASAP.
📩 Request a Quote
Description
Overview: Reliable Temperature Monitoring
Testoterm temperature strips are innovative, self-adhesive foils designed for precise, irreversible maximum temperature monitoring across various applications. Each strip features highly sensitive heat-sensitive elements that permanently change color from light gray to black within 2 to 3 seconds when a specific temperature threshold is reached. This distinct, non-reversible color change provides clear, undeniable evidence that a critical temperature was attained.
These compact and versatile strips eliminate the need for cumbersome electronic probes in tight or dynamic environments. Simply peel and apply the strip directly to the measurement surface to gain lasting visual proof of thermal conditions. They are ideal for situations where continuous electronic monitoring is impractical or cost-prohibitive, offering a simple yet effective solution for ensuring thermal compliance and preventing potential damage.

Why It Matters: Permanent Thermal Verification
In many industrial, HVAC, and logistical scenarios, knowing if a maximum temperature has been exceeded is crucial for equipment longevity, product quality, and safety compliance. Testoterm strips provide an undeniable, tamper-evident record without the need for power sources or complex data logging. This permanent visual indicator allows for quick inspections and confident decision-making, helping you identify overheating issues, verify transit conditions, and maintain operational integrity.
What's Included: Ready for Immediate Use
- ✓ 1 booklet containing 10 Testoterm self-adhesive temperature strips
Features & Benefits: Simple, Effective Monitoring
- Self-Adhesive Design: Easy peel-and-stick application for instant, secure attachment to any clean surface.
- Irreversible Color Change: Provides permanent, visual proof that a specific temperature threshold was reached, even after cooling.
- Fast Response Time: Changes color within 2 to 3 seconds of exceeding the set temperature.
- Highly Sensitive Foils: Ensures accurate detection of maximum temperatures.
- Compact & Discreet: Ideal for small spaces or objects where traditional probes are not feasible.
- No Power Required: Operates completely passively, making it perfect for remote or long-term monitoring.
- Cost-Effective Solution: An economical way to verify thermal conditions without expensive electronic equipment.
Applications: Versatile Thermal Diagnostics
- Moving Objects: Monitor surface temperatures on rotating shafts, motors, conveyor belts, and other dynamic machinery.
- Small & Confined Spaces: Ideal for checking circuit boards, electronic components, bearings, and mechanical assemblies where space is limited.
- Transit & Storage: Long-term, tamper-evident monitoring of sensitive goods (e.g., chemicals, food, pharmaceuticals) during transport or storage to ensure thermal compliance.
- HVAC & Industrial Systems: Quick thermal diagnostics for pipes, ducts, equipment casings, and heat exchangers.
- Automotive & Aviation: Essential for quick thermal checks in demanding engineering and manufacturing environments.
Detailed Specifications: Choose Your Range
To simplify your selection, we have consolidated the entire range of Testoterm strips here. Select the part number that corresponds to your required measuring range below:
| Part Number | Measuring Range (°C) | Measuring Range (°F) | Accuracy |
|---|---|---|---|
| 0646 0108 | +37 to +65 °C | +99 to +149 °F | ±1.5 °C |
| 0646 0916 | +71 to +110 °C | +160 to +230 °F | ±1.5 °C |
| 0646 1724 | +116 to +154 °C | +241 to +309 °F | ±1.5 °C |
| 0646 2532 | +161 to +204 °C | +322 to +399 °F | ± (1 % of mv + 1 °C) |
| 0646 3341 | +204 to +260 °C | +399 to +500 °F | ± (1 % of mv + 1 °C) |
General Specifications
| Delivery Scope | 1 booklet containing 10 Testoterm temperature strips |
| Dimensions | 50 x 18 mm (approx. 2 x 1 inch) |
| Response Time | 2 to 3 seconds |
| Storage Temperature | Maximum +25 °C (77 °F) |
Tradie Pro Tip: For accurate readings, ensure the surface where you apply the Testoterm strip is completely clean, dry, and free of oil or heavy dust. A solid, direct bond is essential for optimal heat transfer. Also, remember to store your unused booklets in a cool place, ideally below 25°C (77°F), to prevent premature activation in warmer environments like a toolbox. Treat them like sensitive instruments!
Pair With: Enhance Your HVAC Toolkit
- ✓ Digital Thermometers: For real-time, instantaneous temperature checks alongside your peak-value strips.
- ✓ Infrared Cameras: To gain a broader thermal overview and identify hot spots before applying specific temperature strips.
- ✓ Temperature Data Loggers: For continuous, automated recording of temperature trends over extended periods in conjunction with permanent visual alerts.
Keep Your Space Clean & Compliant with HVAC Shop
Ensure your systems are running optimally and sensitive goods are protected from thermal extremes. Trust Testoterm temperature strips for reliable, permanent temperature verification. For a full breakdown of indicator types, temperature ranges, and how to choose the right strip for your application, read our Testoterm temperature indicators guide. Explore the full range at HVAC Shop today!
Common Questions for Testo Term | Temperature strips
Any question?
If we still haven't answered your question, you can contact us below and we will get back to you as soon as possible.


















