1. Introduction
This manual provides detailed instructions for the proper setup, operation, and maintenance of your Oregon Scientific PFA-112 Body Fat Analyzer. Please read this manual thoroughly before using the device to ensure accurate results and safe operation. Keep this manual for future reference.
2. Product Overview
The Oregon Scientific PFA-112 is a compact device designed to measure body fat percentage, in addition to functioning as a clock, alarm, and timer. It features an easy-to-read LCD display and intuitive button controls.

Figure 1: Oregon Scientific PFA-112 Body Fat Analyzer. This image displays the Oregon Scientific PFA-112 Body Fat Analyzer. The device is silver-grey with a black LCD screen showing '12:01 PM'. Below the screen are five silver oval buttons labeled 'CLOCK', 'ALARM', 'TIMER', 'FAT %', and 'SET/START'. The 'OREGON SCIENTIFIC' logo is visible above the screen.
2.1 Device Components
- LCD Display: Shows time, alarm, timer, and body fat measurement results.
- CLOCK Button: Used to set and display the current time.
- ALARM Button: Used to set and activate/deactivate the alarm function.
- TIMER Button: Used to set and operate the countdown timer.
- FAT % Button: Initiates body fat measurement and displays results.
- SET Button: Used to confirm selections and enter setting modes.
- START Button: Used to begin measurements or activate functions.
- Up/Down Arrows: Small arrow icons below the CLOCK, ALARM, TIMER, and FAT % buttons indicate their use for adjusting values.
3. Setup
3.1 Battery Installation
- Locate the battery compartment on the back or bottom of the device.
- Open the battery compartment cover.
- Insert the required batteries (e.g., 2x AAA, not included) according to the polarity indicators (+ and -).
- Close the battery compartment cover securely.
3.2 Initial Time Setting
- Press and hold the CLOCK button until the time display starts flashing.
- Use the Up/Down arrows (or repeated presses of the CLOCK button if it cycles) to adjust the hour.
- Press SET to confirm the hour and move to minutes.
- Adjust the minutes using the Up/Down arrows.
- Press SET to confirm and exit time setting mode.
3.3 User Profile Setup (for Body Fat Analysis)
Before taking body fat measurements, you must set up your personal profile. This typically includes gender, height, weight, and age.
- Press and hold the FAT % button until the display enters profile setup mode.
- Use the Up/Down arrows to select a user number (e.g., P1, P2). Press SET.
- Adjust gender (Male/Female) using Up/Down arrows. Press SET.
- Adjust height (e.g., in cm or inches). Press SET.
- Adjust weight (e.g., in kg or lbs). Press SET.
- Adjust age. Press SET to save the profile and exit.
4. Operation
4.1 Using the Clock
In normal display mode, the device shows the current time. To adjust the time, refer to section 3.2.
4.2 Setting and Using the Alarm
- Press the ALARM button once to display the current alarm time.
- Press and hold the ALARM button until the alarm time flashes.
- Use the Up/Down arrows to set the desired alarm hour. Press SET.
- Adjust the minutes. Press SET to confirm.
- To activate/deactivate the alarm, press the ALARM button briefly when the alarm time is displayed. An alarm icon will appear/disappear on the screen.
4.3 Using the Timer
- Press the TIMER button once to enter timer mode.
- Press and hold the TIMER button until the timer digits flash.
- Use the Up/Down arrows to set the desired countdown time (hours, minutes, seconds). Press SET after each segment.
- Press START to begin the countdown.
- Press START again to pause/resume the timer.
- To stop and reset the timer, press and hold TIMER while it is paused or running.
4.4 Measuring Body Fat Percentage
For accurate measurements, ensure your hands are clean and dry. Avoid taking measurements immediately after exercise, showering, or consuming large amounts of water.
- Select your user profile by pressing the FAT % button repeatedly until your profile number (e.g., P1) is displayed.
- Hold the device firmly with both hands, ensuring your thumbs are placed on the metal sensors (if applicable, based on device design).
- Press the START button. The device will begin the measurement process.
- Remain still until the measurement is complete and your body fat percentage is displayed on the screen.
- The device may also display other metrics like BMI or BMR depending on its capabilities.
5. Maintenance
5.1 Cleaning
- Wipe the device with a soft, dry cloth.
- For stubborn marks, use a slightly damp cloth with mild soap, then wipe dry immediately.
- Do not use abrasive cleaners, solvents, or immerse the device in water.
5.2 Battery Replacement
When the display becomes dim or the device stops functioning, replace the batteries. Refer to section 3.1 for battery installation instructions. Always replace all batteries at the same time with new ones of the same type.
5.3 Storage
Store the device in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries to prevent leakage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Check battery polarity; replace with new batteries. |
| Inaccurate body fat readings. | Incorrect user profile data; wet or dirty hands; recent physical activity. | Verify profile settings; ensure hands are clean and dry; wait at least 2 hours after activity. |
| Display is dim or flickering. | Low battery power. | Replace batteries. |
| Buttons are unresponsive. | Device frozen; low battery. | Remove and reinsert batteries to reset; replace batteries. |
7. Specifications
- Model: PFA-112
- Brand: Oregon Scientific
- Functions: Body Fat Analysis, Clock, Alarm, Timer
- Power Source: Batteries (e.g., 2x AAA, not included)
- ASIN: B003HRSZ1Y
- First Available Date: 14 January 2013
- Operating Temperature: Not specified
- Measurement Range: Not specified
8. Warranty and Support
Oregon Scientific products are manufactured to high-quality standards. For specific warranty information, please refer to the warranty card included with your purchase or visit the official Oregon Scientific website. For technical support or service inquiries, please contact Oregon Scientific customer service directly.
Please note that warranty terms may vary by region and retailer.





