Voltcraft WB-420 Thermal Imaging Camera -20 to 550 °C, 256 x 192 Pixels, 25 Hz, Touchscreen, Wi-Fi

An electrician scans a crowded distribution board, instantly spotting an overheating breaker on the 3.5-inch touchscreen. The Voltcraft WB-420 thermal imaging camera turns invisible heat into clear, actionable images, with a resolution of 256 x 192 pixels and a wide measurement range from -20 to 550 °C. Its 25 Hz frame rate keeps the live view smooth, while the touchscreen and Wi-Fi make operation and data sharing effortless.

Key specifications

• IR resolution: 256 x 192 pixels
• Temperature range: -20 to 550 °C
• Thermal sensitivity (NETD): <40 mK @ 25 °C
• Frame rate: 25 Hz
• Accuracy: ±2 °C or ±2 % (whichever is greater)
• Field of view: 56° x 42°
• Spatial resolution (IFOV): 3.8 mrad
• Display: 3.5-inch LCD touchscreen, 640 x 480 pixels
• Connectivity: USB-C, Wi-Fi
• Storage: 16 GB internal, JPG (radiometric) and MP4 formats
• Battery life: approx. 8 hours
• Protection: IP54, 2 m drop resistance
• Digital camera: 5 MP, laser pointer, adjustable emissivity 0.01–1.00
• Measurement modes: center spot, hot/cold spot tracking, user-defined

Why choose it

High thermal sensitivity below 40 mK reveals even subtle temperature differences, crucial for preventive maintenance and building diagnostics. The responsive touchscreen simplifies menu navigation and image analysis, while Wi-Fi connectivity allows instant transfer to a PC or mobile device for reporting. A robust IP54-rated housing and 2-meter drop resistance ensure reliability in demanding environments.

Ideal use cases

• Electrical inspections: identify loose connections, overloaded circuits, and faulty components.
• Mechanical maintenance: monitor motors, bearings, and pumps for abnormal heat.
• Building thermography: detect insulation gaps, moisture, and HVAC issues.
• Research and development: capture precise thermal data for product testing.

Good to know

The WB-420 stores radiometric JPEG images, allowing post-capture temperature analysis without additional software. Its long battery life supports a full workday, and the integrated 5 MP visual camera provides clear reference images alongside thermal shots. A laser pointer aids in targeting specific measurement points.