MASTFUYI Handheld Thermal Imaging Camera – -20°C to 550°C

The MASTFUYI Handheld Infrared Thermal Imaging Camera is a portable inspection and diagnostic tool designed to help identify abnormal heat patterns across electrical systems, mechanical equipment, HVAC installations, underfloor heating, buildings and industrial components.

Featuring a wide -20°C to 550°C (-4°F to 1022°F) temperature-measurement range, smooth 25 Hz thermal refresh rate and a large 50° × 50° field of view, the camera allows users to quickly scan equipment and larger areas for temperature differences that may require further investigation.

The device also features automatic maximum, minimum and centre-point temperature tracking, adjustable emissivity, high and low temperature alarms, 15 thermal colour palettes, laser-assisted positioning, image capture and 4GB built-in storage.

A rechargeable 2500mAh lithium battery provides more than approximately seven hours of listed operating time, while USB Type-C connectivity, IP54 environmental protection and a durable double-injection-moulded housing make the camera suitable for portable inspection and maintenance applications.

Key Features

• Wide -20°C to 550°C Measurement Range – Suitable for observing both relatively cold surfaces and high-temperature equipment.

• 25 Hz Thermal Refresh Rate – Provides smooth real-time thermal image presentation during handheld inspection and scanning.

• 50° × 50° Wide Field of View – Captures a large area within the thermal scene for efficient inspection at closer distances.

• Automatic Maximum Temperature Tracking – Helps quickly locate the hottest detected area within the thermal scene.

• Automatic Minimum Temperature Tracking – Identifies the lowest detected temperature within the displayed area.

• Centre-Point Temperature Measurement – Provides convenient temperature measurement at the centre of the thermal image.

• 15 Thermal Colour Palettes – Multiple viewing modes help users interpret temperature patterns across different inspection environments.

• Adjustable Emissivity – Adjustable from 0.1 to 1.0 to accommodate different surface materials.

• High & Low Temperature Alarms – Configurable temperature thresholds provide additional assistance when identifying abnormal temperature conditions.

• Laser-Assisted Positioning – Built-in positioning laser helps indicate the approximate inspection area.

• Image Capture – Save thermal images for inspection records and later review.

• 4GB Built-In Storage – Provides convenient internal storage for captured thermal images.

• USB Type-C Connectivity – Supports charging, image transfer and compatible computer connectivity.

• 2500mAh Rechargeable Battery – Provides more than approximately seven hours of listed operation.

• IP54 Environmental Protection – Provides limited protection against dust ingress and splashing water.

• 1.5m Listed Drop Resistance – Durable construction designed for regular field and workshop use.

Product Specifications

Brand: MASTFUYI
Product Type: Handheld Infrared Thermal Imaging Camera
Thermal Refresh Rate: 25 Hz
Temperature Measurement Range: Approximately -20°C to 550°C
Fahrenheit Range: Approximately -4°F to 1022°F
Field of View: Approximately 50° × 50°
Recommended Measurement Distance: Approximately 0.3–3m
Emissivity Adjustment: 0.1–1.0
Temperature Measurement Points: Maximum / Minimum / Centre
Temperature Alarm: High & Low Threshold Support
Thermal Colour Palettes: 15
Display: TFT True-Colour Display
Laser-Assisted Positioning: Supported
Image Capture: Supported
Image Format: BMP
Internal Storage: 4GB
Listed Image Capacity: Up to Approximately 30,000 Images
USB Interface: USB Type-C
Computer Connection: Supported
Battery Type: Rechargeable Lithium Battery
Battery Capacity: 2500mAh
Listed Operating Time: More Than Approximately 7 Hours
Listed Charging Time: Approximately 3 Hours
Protection Rating: IP54
Listed Drop Resistance: Approximately 1.5m
Housing: Double-Injection-Moulded Body
Country of Origin: China

Wide -20°C to 550°C Temperature Range

The MASTFUYI thermal camera provides a listed object-temperature measurement range from approximately -20°C to 550°C, equivalent to approximately -4°F to 1022°F.

This wide range makes the camera suitable for a variety of thermal inspection applications, from locating relatively cold areas in buildings to observing high-temperature components in mechanical and industrial environments.

The measurement range refers to the temperatures of objects the camera is designed to measure and should not be confused with the camera's own environmental operating-temperature range.

25 Hz Real-Time Thermal Imaging

A 25 Hz thermal refresh rate provides smooth image updates as the camera moves across an inspection area.

This can make it easier to scan electrical panels, machinery, walls, heating systems and other equipment while identifying changing thermal patterns.

50° × 50° Wide Field of View

The camera features a listed 50° × 50° field of view, providing a wide thermal viewing area.

A wider field of view can be particularly useful for:

• Electrical cabinet inspection

• Underfloor heating surveys

• Building and insulation checks

• HVAC inspection

• Mechanical equipment monitoring

• Larger-area thermal scanning

The wide viewing angle allows more of the inspected area to appear within the thermal image at shorter distances.

Automatic Temperature Tracking

The MASTFUYI thermal camera supports real-time tracking of:

• Maximum detected temperature

• Minimum detected temperature

• Centre-point temperature

These measurement functions can help users quickly locate unusually hot or cold areas within the thermal scene.

Potential examples include overheated electrical connections, abnormal mechanical heat, uneven floor-heating performance and unexpected temperature differences across building surfaces.

Adjustable Emissivity

The camera provides adjustable emissivity from 0.1 to 1.0, allowing the user to adapt temperature measurement settings according to different surface materials.

Emissivity can significantly affect infrared temperature measurements. Materials such as painted surfaces, wood, rubber, concrete and oxidised metals can have different emissivity characteristics.

Highly reflective or polished surfaces may require additional care when interpreting thermal measurements.

High & Low Temperature Alarms

Configurable high and low temperature thresholds can assist users when monitoring components for temperatures outside a desired range.

The alarm function complements the camera's maximum, minimum and centre-point temperature measurements and can make unusual thermal conditions easier to notice during inspections.

15 Thermal Colour Palettes

The camera provides 15 thermal colour palettes, giving users multiple ways to visualise differences in temperature.

Different palettes can make particular thermal patterns easier to distinguish depending on the inspection environment, temperature distribution and user preference.

Available palette names may vary according to the installed firmware.

Laser-Assisted Positioning

An integrated positioning laser provides a visual reference for the approximate area being inspected.

The laser is intended as a positioning aid and does not perform the infrared temperature measurement itself.

Never direct the positioning laser toward people's eyes, animals, reflective surfaces, vehicles or aircraft.

Image Capture & 4GB Storage

Thermal images can be captured directly from the camera and stored in BMP format.

The device includes 4GB of built-in storage, with a listed capacity of up to approximately 30,000 thermal images.

Actual available storage and image capacity may vary depending on saved image size, embedded measurement information, reserved system storage and file-system requirements.

USB Type-C Connectivity

The integrated USB Type-C interface provides convenient connectivity for charging and compatible computer connection.

Captured images can be transferred for documentation, record keeping or further review using supported computer functionality.

Available computer-analysis functions depend on the software supplied or supported for the selected product version.

2500mAh Rechargeable Battery

The camera includes a 2500mAh rechargeable lithium battery with a listed operating time of more than approximately seven hours.

A full charge is listed as taking approximately three hours.

Actual battery runtime may vary depending on display use, laser operation, temperature alarms, image capture, ambient temperature and battery condition.

IP54 Environmental Protection

The thermal camera carries a listed IP54 protection rating.

This provides limited protection against dust ingress and resistance to water splashes from different directions under defined test conditions.

IP54 does not mean the device is waterproof, fully dust-tight or suitable for immersion.

Durable Inspection Design

The double-injection-moulded housing is designed to provide a durable handheld structure for workshop, maintenance and field use.

The camera also has a listed drop resistance of approximately 1.5 metres.

As with any precision thermal imaging instrument, unnecessary drops and impacts should still be avoided.

Suitable Applications

The MASTFUYI Handheld Thermal Imaging Camera may be suitable for:

• Electrical panel inspection

• Cable and electrical connection checks

• HVAC inspection

• Underfloor heating checks

• Building insulation surveys

• Mechanical equipment monitoring

• Motor and bearing checks

• Plumbing and water-leak investigation

• Solar-panel inspection

• Petrochemical inspection

• Manufacturing quality control

• Property maintenance

• Preventive maintenance

• General industrial troubleshooting

Important Measurement Information

Infrared temperature measurements can be affected by surface emissivity, reflections, target size, measurement distance, viewing angle, ambient conditions and calibration.

For more reliable measurements, use an appropriate emissivity setting for the material being inspected and follow the manufacturer's measurement procedures.

The listed recommended measurement distance is approximately 0.3–3 metres. This should not be interpreted as the maximum distance at which the camera can detect a heat source.

The camera should not replace certified electrical-safety equipment, appropriate personal protective equipment or specialised calibrated measurement instruments where these are required.

Important Resolution Information

The supplied product information contains both 320 × 240 and 240 × 240 resolution specifications.

These figures may refer to different components, such as the native thermal detector, internal display or saved image resolution, or they may represent different product configurations.

For this reason, the exact native thermal detector resolution should be confirmed for the selected product before ordering if resolution is an important purchasing requirement.

Safety & Care

Never point the positioning laser toward people's eyes, animals, reflective surfaces, moving vehicles or aircraft.

Avoid exposing the thermal detector directly to the sun, welding arcs or intense energy sources beyond the camera's rated limits.

Use appropriate personal protective equipment and follow established safety procedures when inspecting live electrical equipment, machinery, petrochemical systems or high-temperature components.

A thermal imaging camera can help identify unusual heat patterns, but it does not replace electrical isolation, lockout procedures, professional inspection or other required safety measures.