1. Introduction
The Nubee NUB8380 is a non-contact infrared thermometer designed for safe and accurate temperature measurement from a distance. It features a laser pointer for precise targeting, selectable Celsius or Fahrenheit units, automatic data hold, and a backlit display for easy reading in various conditions. This manual provides instructions for proper setup, operation, and maintenance of your device.
2. Package Contents
- 1 x Nubee NUB8380 Infrared Thermometer
- 1 x 9V DC Battery
- 1 x User Manual

Image: The Nubee NUB8380 Infrared Thermometer shown in its blister packaging, alongside the included 9V battery, ready for initial setup.
3. Product Overview
Familiarize yourself with the components of your Nubee NUB8380 Infrared Thermometer:

Image: A detailed diagram illustrating the various parts of the Nubee NUB8380 thermometer, including the infrared sensor, laser pointer, LCD display, measurement trigger, and control buttons.
- Infrared Sensor: Detects infrared energy emitted by objects.
- Laser Pointer: Assists in aiming at the target measurement area.
- LCD Display: Shows temperature readings, unit, and function indicators.
- Measure Button (Trigger): Activates the thermometer to take a reading.
- Battery Cover: Located on the handle, provides access for battery installation.
- Function Buttons: Used to select units (C/F), toggle laser, and backlight.
4. Setup
4.1 Battery Installation
- Locate the battery compartment on the handle of the thermometer.
- Open the battery cover.
- Insert the included 9V DC battery, ensuring correct polarity (+/-).
- Close the battery cover securely.
The thermometer is now ready for use. A low battery indicator will appear on the display when the battery needs replacement.
5. Operating Instructions
5.1 Taking a Measurement
- Point the thermometer at the object you wish to measure.
- Press and hold the Measure Button (trigger). The laser pointer will activate (if enabled) to help you aim.
- The temperature reading will appear on the LCD display.
- Release the Measure Button. The reading will be held on the display (Data Hold function) for approximately 7 seconds before the device automatically shuts off to conserve battery.
5.2 Switching Temperature Units (°C/°F)
With the thermometer on, press the °C/°F button to toggle between Celsius and Fahrenheit temperature units.
5.3 Laser Pointer Control
Press the laser button to turn the laser pointer on or off. The laser assists in precise targeting but is not required for measurement.
5.4 Backlight Control
Press the backlight button to turn the LCD display backlight on or off. This feature is useful in low-light conditions.
5.5 Distance to Spot Ratio (D:S)
The Nubee NUB8380 has a Distance to Spot Ratio of 12:1. This means that from a distance of 12 inches, the measurement area (spot) will be 1 inch in diameter. To ensure accurate readings, make sure the target area is larger than the spot size at your chosen measurement distance.
5.6 Emissivity
This thermometer has a fixed emissivity of 0.95, which is suitable for most organic materials, painted surfaces, and many common materials. For highly reflective surfaces, readings may be less accurate.
6. Applications
The Nubee NUB8380 Infrared Thermometer is versatile and can be used for various non-contact temperature measurement tasks:
- Home Use: Checking HVAC systems, cooking surfaces, pet enclosures, or appliance temperatures.
- Automotive: Measuring engine components, tires, or brake temperatures.
- Industrial: Monitoring electrical panels, machinery, or manufacturing processes.

Image: The thermometer being used to measure the temperature of a fireplace, demonstrating its utility for home heating systems.

Image: The thermometer in use to check the temperature of a car engine, highlighting its application in automotive diagnostics.

Image: The thermometer being used to measure ambient room temperature, showcasing its general utility for environmental monitoring.
7. Maintenance
7.1 Cleaning
- Clean the lens with a soft, damp cloth or cotton swab. Do not use abrasive cleaners or solvents.
- Wipe the thermometer body with a soft, dry cloth.
7.2 Storage
- Store the thermometer in a clean, dry environment when not in use.
- Remove the battery if the device will not be used for an extended period to prevent leakage.
8. Troubleshooting
- No Display: Check battery installation and ensure the battery has sufficient charge. Replace if necessary.
- Inaccurate Readings: Ensure the target is within the D:S ratio. Check for obstructions between the thermometer and the target. Avoid measuring highly reflective surfaces.
- Laser Not Working: Check if the laser function is enabled via its dedicated button.
9. Specifications
| Feature | Specification |
|---|---|
| Temperature Range | -50°C to 380°C (-58°F to 716°F) |
| Accuracy | ±2% or ±2°C |
| Distance to Spot Ratio (D:S) | 12:1 |
| Emissivity | 0.95 (Fixed) |
| Response Time | 500ms |
| Wavelength | 8-14 µm |
| Repeatability | ±1% or ±1°C |
| Resolution | 0.1°C or 0.1°F |
| Power Supply | 9V DC Battery |
| Auto Shut-off | Yes |
| Data Hold Function | Yes |
| Backlight Selection | Yes |
| Low Battery Indication | Yes |
| Certifications | FDA, FCC, CE, ROHS |

Image: A side view of the Nubee NUB8380 thermometer with its dimensions clearly marked, showing a length of 6.4 inches (16 cm).
10. Safety Information
- DO NOT point the laser directly into eyes or at reflective surfaces that could redirect the laser into eyes.
- DO NOT use the thermometer near explosive gases, steam, or dust.
- Keep the device out of reach of children.
- Avoid exposing the thermometer to extreme temperatures, humidity, or direct sunlight.
- If the device is damaged, do not attempt to repair it yourself. Contact customer support.
11. Warranty and Support
The Nubee NUB8380 Infrared Thermometer is manufactured to high-quality standards and is approved by FDA, FCC, CE, and ROHS. For specific warranty details or technical support, please refer to the contact information provided with your purchase or visit the official Nubee website.