ZOYI GM-550 Non-Contact Infrared Thermometer
Measure surface temperatures from −50°C to 550°C without direct contact—ideal for HVAC servicing, electrical inspections, automotive diagnostics and equipment maintenance.
Why Choose the ZOYI GM-550?
The ZOYI GM-550 is a practical infrared thermometer designed for fast, non-contact surface-temperature measurement. It allows users to inspect hot, moving, difficult-to-reach or potentially hazardous surfaces from a safer working distance.
With a wide temperature range and adjustable emissivity, the GM-550 is suitable for checking motors, bearings, electrical panels, heating and cooling systems, machinery, vehicle components and other equipment where direct-contact measurement may be inconvenient.
Understanding the 12:1 ratio: At a distance of 12 units, the thermometer measures an area approximately 1 unit in diameter. For the best result, move closer until the target completely fills the measurement spot.
Technical Specifications
| Measurement Range |
−50°C to 550°C / −58°F to 1022°F |
| Repeatability |
±1% or ±1°C / ±1.8°F, whichever is greater |
| Distance-to-Spot Ratio |
12:1 |
| Adjustable Emissivity |
0.10 to 1.00 |
| Spectral Response |
6–14µm |
| Measurement Modes |
Maximum, Minimum, Average, Difference and Temperature Offset |
| Power Supply |
2 × AAA batteries |
| Dimensions and Housing |
155 × 95 × 43mm; durable ABS plastic housing |
Practical Measurement Features
Laser Target Pointer
Helps users aim the thermometer at the intended measurement area.
Adjustable Emissivity
Allows adjustment for different surface materials and finishes.
Backlit Display
Provides clear readings in workshops, plant rooms and dim locations.
Data Hold
Keeps the measured value visible for convenient recording.
Multiple Display Modes
View maximum, minimum, average and temperature-difference results.
Automatic Power-Off
Helps reduce unnecessary battery consumption between tests.
Typical Applications
- HVAC, heating and ventilation inspections
- Motor, bearing and machinery temperature checks
- Electrical panels, connectors and equipment maintenance
- Automotive cooling, braking and engine diagnostics
- Appliance and workshop troubleshooting
- Non-contact testing of hot or difficult-to-reach surfaces
Important measurement guidance: Infrared thermometers measure surface temperature rather than internal temperature. Shiny or reflective materials may require emissivity adjustment or a prepared measurement surface. Never direct the laser toward eyes, and do not use this industrial thermometer for clinical body-temperature measurement.
What’s Included
- ZOYI GM-550 infrared thermometer
- User manual
- 2 × AAA batteries where shown as included with the selected package
Please check the selected package contents before ordering, as battery inclusion may vary.
Available from ZOYI UK
Supplied from UK stock with fast dispatch, a full VAT invoice and a 12-month warranty, the ZOYI GM-550 offers a practical solution for professional non-contact surface-temperature measurement.
