Product Overview
The Amazon Basics Digital Postal Scale is designed for accurate and efficient weighing of various items, particularly packages. Its robust construction and versatile features make it an essential tool for home or office use.
Key Features:
- Digital tabletop postal scale for quickly and precisely weighing items
- Includes a shipping postal scale and AC adapter; made of durable black ABS, aluminum, and iron
- 65 pound (30kg) capacity reads to 0.1 ounce (1g) in 0.1 ounce increments; minimum load weight is 0.2 ounces (5g)
- Extra large LCD display for easy viewing; measuring units in ounces, pounds, g, and kg
- Tare function for resetting the scale to zero after setting a container on the platform; great for net weights
- Counting function for determining the number of pieces on the platform, like nails or other small objects (minimum weight 25g)
- Powered by 2 x AA batteries or with AC adapter; 5 minute auto shutoff when battery powered; stays on when plugged in
- Product dimensions 9.06 x 8.27 x 1.89 inches (LxWxH)

Setup and Initial Use
Unpacking and Placement
Carefully remove the scale from its packaging. Place the scale on a flat, stable, and level surface to ensure accurate readings. Avoid placing it near strong electromagnetic fields or areas with significant vibrations.
Powering the Scale
The scale can be powered by either the included AC adapter or 2 x AA batteries (not included).
- AC Adapter: For continuous power without auto-shutoff, connect the AC adapter to the scale's power input port and plug it into a standard electrical outlet.
- Batteries: For portable use, open the battery compartment on the underside of the scale and insert 2 x AA batteries, ensuring correct polarity. The scale will automatically shut off after 5 minutes of inactivity when battery-powered to conserve energy.


Operating Instructions
Power On/Off
Press the ON/OFF button to turn the scale on or off. The display will show '0.0' when ready for use.
Unit Conversion
Press the MODE button to cycle through available weighing units: ounces (oz), pounds (lb), grams (g), and kilograms (kg). The selected unit will be displayed on the LCD screen.

Tare Function
The Tare function allows you to weigh items in a container by subtracting the container's weight. Place an empty container on the scale, then press the TARE button. The display will reset to '0.0'. You can then add items to the container, and the scale will display only the net weight of the items.

Counting Function (PCS)
The counting function is useful for determining the number of small, uniform items. To use this feature:
- With the scale on and showing '0.0', press the PCS button.
- The display will show a sample size (e.g., '25'). Place the corresponding number of items (e.g., 25 pieces) on the scale.
- Press the PCS button again to confirm the sample. The scale is now calibrated for counting.
- Add more items, and the display will show the total count of items. (Minimum weight for counting is 25g).

Care and Maintenance
Cleaning
Wipe the scale with a soft, damp cloth. Do not use abrasive cleaners or immerse the scale in water. Ensure the scale is dry before storage or next use.
Storage
Store the scale in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries to prevent leakage.
Troubleshooting
Inaccurate Readings
- Ensure the scale is on a flat, stable, and level surface.
- Check for any obstructions under or around the scale.
- Verify that the correct unit of measurement is selected.
- Recalibrate the scale if necessary (refer to specific calibration instructions if provided in a separate manual, or perform a power cycle).
Display Issues (e.g., 'Lo', 'Err')
- 'Lo' indicates low battery. Replace the batteries or use the AC adapter.
- 'Err' may indicate an overload. Remove the item immediately to prevent damage. Ensure the weight does not exceed the 65 lb (30 kg) capacity.
Auto Shut-off Too Soon/Not Shutting Off
- When powered by batteries, the scale has a 5-minute auto-shutoff feature. This is normal to conserve battery life.
- When powered by the AC adapter, the scale will remain on continuously and will not auto-shut off.
Product Specifications
| Feature | Detail |
|---|---|
| Brand | Amazon Basics |
| Color | Black |
| Recommended Uses For Product | Packages |
| Special Feature | Auto Shut Off |
| Display Type | LED |
| Weight Limit | 65 Pounds |
| Material | Aluminum, Iron, Acrylonitrile Butadiene Styrene |
| Readout Accuracy | 2.86 g |
| Item Weight | 1.67 Pounds |
| Weigh Scale Type | Counter Scale |
| Measurement Type | pounds |
| Manufacturer | Amazon |
| UPC | 840095879149 840095842747 |
| Product Dimensions | 9.06 x 8.27 x 1.89 inches |
| Item model number | SF-550 |
| Number of Items | 1 |
| Size | 65 pound |
Warranty and Support
Warranty Information
For detailed warranty information, please refer to the official Warranty PDF document available for download. A link to the Warranty PDF is provided below.
Customer Support
For further assistance, technical support, or inquiries regarding your Amazon Basics Digital Postal Scale, please contact Amazon customer service or visit the official Amazon Basics support page.





