The Testo 871s Thermal Imaging Camera is the professional’s choice for high-resolution thermography, wireless connectivity, and real-time data integration. With an infrared resolution of 240 x 180 pixels (boosted to 480 x 360 with SuperResolution), it captures incredibly sharp thermal images, making it ideal for HVAC, electrical, and building diagnostics.
Designed to deliver reliable, precise measurements, the 871s offers a temperature detection range from -30°C to +650°C with a thermal sensitivity of 80mK (0.08°C). It features a wide 35° x 26° field of view, allowing you to inspect large areas quickly and efficiently, while automatic hot/cold spot detection highlights problem zones instantly.
Smart connectivity is a standout feature of the 871s. Via Bluetooth, it pairs seamlessly with the Testo 770-3 Clamp Meter and Testo 605i Thermohygrometer to capture voltage, current, humidity, and ambient temperature measurements alongside thermal images. Plus, built-in Wi-Fi enables real-time reporting and remote operation through the Testo Thermography App (iOS & Android), turning your phone or tablet into a second screen and remote control.
Advanced features like testo ScaleAssist, ɛ-Assist, and IFOV warning optimise image accuracy, emissivity settings, and measurement spot size—reducing error and improving image quality. With an IP54 rating, 4-hour battery life, internal memory, and digital image overlay, the 871s is ready for the toughest job sites.
✅ 240 x 180 IR Resolution – Enhanced to 480 x 360 with SuperResolution
✅ Wide Temperature Range – Measures from -30°C to +650°C
✅ High Sensitivity (80mK) – Detects minor temperature fluctuations
✅ Built-In Wi-Fi & Bluetooth – Real-time data transfer, app control & second screen
✅ Wireless Device Sync – Connects to Testo 770-3 (voltage/current) & 605i (humidity/ambient temp)
✅ Testo Thermography App – Capture, analyse & send reports instantly
✅ Hot/Cold Spot Detection – Fast, automated fault identification
✅ Digital Camera Included – Save visual and thermal images side-by-side
✅ IFOV Warning, ScaleAssist, ɛ-Assist – Ensure error-free, consistent thermography
✅ Rugged & Portable – IP54 protection, 4-hour battery, USB/WLAN image export
The Testo 871s Thermal Imager with Bluetooth/WLAN, comes with a USB cable, mains unit, lithium-ion rechargeable battery, IRSoft professional software (free download), 3 x ε-Markers, commissioning instructions, short instructions, calibration protocol, and a durable carrying case. Please note there is a 3-5 day lead time on this product.
The Testo 871s stands out as a smart, professional-grade thermal imaging solution that delivers precision, connectivity, and convenience in one compact device. Whether you're performing preventative maintenance, energy audits, electrical inspections, or building diagnostics, the 871s helps you work faster and smarter.
High-resolution thermal imaging with SuperResolution enhancement for superior detail
Wireless integration with Testo clamp meters and thermohygrometers for comprehensive multi-parameter analysis
Instant reporting and remote operation via the Testo Thermography App—perfect for on-site collaboration
Robust, IP54-rated design ensures reliability in demanding environments
Advanced features like hot/cold spot detection, emissivity assist, and IFOV warning enhance accuracy and consistency
For professionals who need accurate diagnostics, seamless data handling, and field-ready durability, the Testo 871s offers unbeatable value and performance.
| Brand | Testo |
|---|---|
| Product Type | Thermal Imaging Camera |
| Standards | RED: 2014/53/EU; EMC: 2014/30/EU |
| Field of View H x V | 35° x 26° |
| Focus Type | Fixed Focus |
| Minimum Focus Distance | <0.5 m |
| Geometric Resolution (IFOV) | 2.6 mrad |
| Image Refresh Rate | 9 Hz |
| Infrared Resolution | 240 x 180 pixels |
| SuperResolution (IFOV) | 1.6 mrad |
| SuperResolution (Pixel) | 480 x 360 pixels |
| Thermal Sensitivity | <0.08 °C (80 mK) |
| Spectral Range | 7.5 to 14 µm |
| Visual Image Size | 5 MP |
| Display Colours | Iron, Rainbow, Cold-Hot, Grey |
| Display Type | 3.5" TFT, QVGA (320 x 240 pixels) |
| Measurement Accuracy | ±2 °C, ±2 % of mv |
| Emissivity | 0.01 to 1 |
| Measuring Range | -30 to +100 °C; 0 to +650 °C |
| Reflected Temperature | Manual |
| Testo ε-Assist | Included |
| Analysis Functions | Mean point measurement, hot/cold-spot recognition, Delta T |
| Solar Mode | Manual input of solar radiation value |
| Electrical Mode | Manual input of current, voltage or power |
| Humidity Mode | Included |
| Humidity Measurement | Via Bluetooth from testo 605i (optional) |
| Electrical Measurement | Via Bluetooth from testo 770-3 (optional) |
| IFOV Warner | Included |
| Testo ScaleAssist | Included |
| Video Streaming | via WLAN with Testo Thermography App |
| Standard Lens | 35° x 26° |
| JPEG Storage | Included |
| Full Screen Mode | Included |
| Digital Camera | Included |
| Interface | USB 2.0 Micro B |
| WLAN Connectivity | BT/WLAN (EU, EFTA, USA, AUS, CDN, TR) |
| Bluetooth | Measurement value transfer from optional instruments |
| Image File Formats | .bmt, .jpg; export: .bmp, .jpg, .png, .csv, .xls |
| Internal Memory | 2.8 GB |
| Battery Type | Fast-charging Li-ion (field replaceable) |
| Mains Operation | Yes |
| Operating Time | 4.0 h |
| Air Humidity | 20 to 80 %RH non-condensing |
| Housing Protection Class | IP54 |
| Vibration Resistance | 2G |
| Storage Temperature | -30 to +60 °C |
| Operating Temperature | -15 to +50 °C |
| Product Colour | Black |
| Display Lighting | Bright / Normal / Dark |
| Material | PC - ABS |
| Weight | 510 g |
| Dimensions (L x W x H) | 219 x 96 x 95 mm |
| PC Software Compatibility | Windows® 11; Windows® 10; Windows® 8.1 |
| Warranty | 2 Years |
240 x 180 Infrared Resolution (480 x 360 with SuperResolution) – Capture detailed thermal images for professional diagnostics
Wide Temperature Range (-30°C to +650°C) – Ideal for HVAC, electrical, and building inspection applications
High Thermal Sensitivity (80mK / 0.08°C) – Detects the smallest temperature differences with precision
Wi-Fi Enabled & App Connected – Operate remotely and generate reports instantly via the Testo Thermography App
Bluetooth Integration – Syncs with Testo 770-3 Clamp Meter and 605i Thermohygrometer for full-system analysis
Automatic Hot & Cold Spot Detection – Instantly identifies anomalies for faster fault detection
Built-In Digital Camera – Capture side-by-side thermal and visual images for easy documentation
ScaleAssist & ɛ-Assist Technology – Auto-optimises emissivity and temperature scale for accurate imaging
IFOV Warning System – Ensures correct spot-size measurements to reduce errors
Rugged IP54-Rated Design – Dust and splash-resistant housing for tough job site conditions
4-Hour Battery Life – Long-lasting performance for uninterrupted inspections
USB & WLAN Image Export – Save and transfer thermal images as JPEGs for seamless reporting
