Need a quick, safe, and reliable way to measure temperature? The CEM IR-77H Mini Infrared Thermometer combines a compact, pocket-sized design with impressive professional capabilities. With a simple press of the trigger, it instantly measures surface temperatures without contact. Small enough to fit in your pocket or tool bag, this mini device operates within a wide range of -30°C to +270°C, making it suitable for many everyday and professional applications.
What truly sets the IR-77H apart is its adjustable emissivity, a feature rarely found in thermometers of this size. This allows users to obtain more accurate readings on different surfaces, including reflective materials such as metals. Designed for both quick household checks and professional diagnostics, the CEM IR-77H offers a practical and efficient temperature measurement solution.
Features
- Compact Pocket Design: Small, lightweight body easily fits in a pocket or tool bag for convenient everyday use.
- Non-Contact Infrared Measurement: Instantly measures surface temperatures without touching the object, ensuring safety and hygiene.
- Wide Temperature Range: Measures temperatures from -30°C to +270°C (-22°F to 518°F), suitable for both cold and moderately high-temperature applications.
- Adjustable Emissivity (0.10 – 1.00): Allows accurate measurement on various materials including metals, plastics, painted surfaces, and food products.
- Laser Targeting System: Built-in laser pointer clearly indicates the center of the measurement area.
- 6:1 Distance-to-Spot Ratio: Optimized for accurate measurements at close distances.
- Fast Response Time: Provides temperature readings in less than 1 second for quick inspections.
- MAX Hold Function: Displays the highest temperature detected during continuous measurement.
- Data Hold Feature: Keeps the last measurement on the screen for easy reading and recording.
- Backlit LCD Display: Ensures clear visibility of measurement results even in low-light environments.
- Trigger Lock for Continuous Measurement: Enables hands-free temperature monitoring during longer inspections.
- Auto Power-Off: Automatically turns off after inactivity to extend battery life.
Technical Specifications
| Model | CEM IR-77H |
| Temperature Measurement Range | -30°C to 270°C (-22°F to 518°F) |
| Accuracy | ±2.0% of reading or ±2°C |
| Distance to Spot Ratio (D:S) | 6:1 |
| Emissivity | Adjustable (0.10 to 1.0) |
| Resolution | 0.1°C / 0.1°F |
| Response Time | < 1 second |
| Targeting | Class II Laser (Center point indicator) |
| Display | Backlit LCD |
| Additional Functions | MAX Hold, Data Hold, Trigger Lock, Auto Power-Off (10 sec) |
| Power Supply | 2 × 1.5V AAA batteries |
| Dimensions | Approx. 97 × 57 × 29 mm |
| Weight | Approx. 81 g (including batteries) |





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