Introduction
This user manual provides comprehensive instructions for the Mobi Dualscan Prime Ear & Forehead Infrared Thermometer. Designed for infants, children, and adults, this versatile thermometer offers accurate and reliable temperature readings for body, food, and nursery environments. It features multiple reading modes, a quick 1-second measurement, and a large, easy-to-read backlit display for convenience.
Package Contents
Please ensure all items listed below are included in your package:
- 1x Mobi Dualscan Prime Thermometer
- 2x AAA Batteries
- 1x Instruction Manual
Product Features
The Mobi Dualscan Prime Thermometer is equipped with several features for ease of use and accuracy:
- Dual Reading Modes: Capable of taking both ear and forehead temperature readings.
- Multi-Purpose Use: Also measures food, milk bottle, and nursery temperatures.
- Fast Measurement: Provides temperature readings in approximately 1 second.
- Clear Display: Features a large, easy-to-read backlit LCD display.
- Memory Recall: Stores up to 9 previous readings for tracking.
- Battery Saving: Includes an automatic shut-off feature to conserve battery life.
- Unit Selection: Displays readings in both Degrees Fahrenheit (°F) and Degrees Celsius (°C).
- Infrared Sensor: Utilizes an infrared sensor tip for non-contact measurements.
Setup
Battery Installation
Your Mobi Dualscan Prime Thermometer comes with 2 AAA batteries included. To install or replace batteries:
- Locate the battery compartment cover on the back of the thermometer.
- Slide the cover off in the direction indicated by the arrow.
- Insert the 2 AAA batteries, ensuring correct polarity (+ and - ends).
- Slide the battery compartment cover back into place until it clicks securely.
Initial Power On
After battery installation, press any button to power on the device. The LCD display will light up, indicating it is ready for use.
Operating Modes
1. Forehead Temperature Reading

To measure forehead temperature, ensure the protective cap is securely on the probe. Position the thermometer approximately 1-2 inches away from the center of the forehead. Press and release the HEAD scan button. The temperature reading will appear on the LCD display within 1 second. The display will illuminate green for normal temperature, and red if a fever is detected.
2. Ear Temperature Reading

For ear temperature measurement, gently remove the protective cap from the probe tip. Carefully insert the probe into the ear canal. Press and release the EAR scan button. The temperature reading will be displayed on the LCD screen almost instantly. The display will illuminate green for normal temperature, and red if a fever is detected.
3. Food, Bottle, and Object Temperature Reading

To measure the temperature of food, milk bottles, or other objects, ensure the protective cap is on. Hold the thermometer approximately 1-2 inches away from the surface of the item. Simultaneously press and hold both the HEAD and EAR buttons. The temperature reading will appear on the display. This mode is ideal for checking baby food or bath water to ensure it's at a safe temperature.
Memory Recall
The thermometer can store up to 9 previous temperature readings. To access these readings, press the MEM button. Each press will cycle through the stored temperatures, allowing you to track changes over time.
Unit Conversion (°F/°C)
To switch between Fahrenheit (°F) and Celsius (°C), ensure the device is powered on. Press and hold the SET button until the unit changes on the display. Release the button to confirm your selection.
Maintenance
Cleaning Instructions
To ensure accurate readings and hygiene, clean the thermometer regularly:
- Wipe the probe tip with an alcohol swab or a cotton swab moistened with alcohol (70% Isopropyl Alcohol is recommended).
- Allow the probe to air dry completely before storage or next use.
- Clean the thermometer body with a soft, dry cloth. Do not immerse the device in water or any cleaning solutions.
- Avoid using abrasive cleaning agents or harsh chemicals, as these may damage the device.
Storage
Store the thermometer in a cool, dry place, away from direct sunlight and extreme temperatures. Keep the protective cap on the probe when not in use to prevent damage.
Troubleshooting
If you encounter any issues with your Mobi Dualscan Prime Thermometer, please refer to the following common solutions:
| Problem | Possible Cause / Solution |
|---|---|
| No display / Device won't turn on | Batteries are dead or incorrectly installed. Replace batteries, ensuring correct polarity. |
| Inaccurate readings |
|
| "Lo" or "Hi" displayed | Temperature is outside the measurable range. Ensure the thermometer is used within its specified operating temperature range. |
If the issue persists after attempting these solutions, please contact Mobi customer support for further assistance.
Specifications
| Specification | Detail |
|---|---|
| Model Number | 70121 |
| Product Dimensions | 2 x 4.85 x 8.5 inches; 4 ounces |
| Power Source | Battery Powered (2 AAA batteries included) |
| Display Type | Digital, Backlit LCD |
| Measurement Modes | Ear, Forehead, Food, Object |
| Special Features | Auto Off, High Accuracy, Dual Probe, Memory Recall (9 readings) |
| Material | Plastic |
| Color | White |
| Manufacturer | Mobi Technologies, Inc. |
| First Available Date | November 10, 2012 |
Warranty & Support
Warranty Information
The Mobi Dualscan Prime Thermometer comes with a One Year Limited Warranty. Details regarding the terms and conditions of this warranty are typically included within the product packaging. Please refer to the warranty card or included documentation for specific coverage details.
Legal Disclaimer
"IN NO EVENT, REGARDLESS OF CAUSE, SHALL MOBI TECHNOLOGIES INC. LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL DAMAGES OF ANY KIND, WHETHER ARISING UNDER BREACH OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, AND WHETHER BASED ON THIS AGREEMENT OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES."
Customer Support
For product support, technical assistance, or warranty claims, please visit the official Mobi website: www.getmobi.com.

