
SELECT UNIT CALIBRATION
Scale is pre-calibrated at factory, do not calibrate unless scale is not
accurate
1. Press and hold UNITS key first and then press ON/OFF key.
2. Release both keys
3. Display will show “C=xx”
POSTAL SCALE
Model SC
4. Note: xx is the calibration weight.
Press UNITS key to select calibration weight value for unit kg (10kg) or lb
(10lb / 20lb / 30 lb are selectable).
5. Press ZERO/TARE key
6. Display will show CAL and then a 5 digit A/D value. A/D
value is the internal digital count on the scale. It should be more or less
stable within +/- 5 counts. If it keeps going up or down continuously or
remains very unstable, the load cell may be bad.
7. Press UNITS key. (note this step is to capture the zero point – no weight
on the scale platter)
8. Display will show “……” then the calibration weight value.
9. Place weight on scale
10. Press UNITS key. Display will show “……” and return to the A/D value.
11. Calibration is complete, remove the weights and turn off the scale
If calibration is repeatedly incorrect then:
1) Replace the batteries
2) Try a more stable surface or vibration and interference free location
INSTRUCTION MANUAL

SAFETY PRECAUTIONS
Important information to alert you to a situation that
might cause serious injury and damage to your
property if instructions are not followed.
Important information that tells how to prevent damage
to the equipment.
Standard carton: 220x300x75(mm3)
20 Units in one box: 45x61x40(cm3)
Optimum: 0-40℃C (32-104℉) F
3×AAA Size Batteries or AC/DC
Adapter 6V/100mA (optional)
SPECIFICATIONS
All safety messages are identified by the words "WARNING" and "CAUTION".
These words mean the following:
When using the scale, the following safety precautions should always be
followed.
!
△
WARNING
Use only the correct AC adaptor with the scale. Other adaptors may cause
permanent electrical damage.
!
△
CAUTION
Avoid placing the scale in direct sunlight, this may cause discoloration or
malfunction.
Replace all batteries at the same time – Do not replace only a portion of the
batteries as this may cause a malfunction.
If the scale is not to be used for a long period of time, remove all batteries from
the battery compartment to avoid leakage, which may cause damage to this
scale.
Avoid overloading the scale, as this may cause permanent damage and void
your warranty – do not EVER exceed the maximum capacity of the scale. Keep
the scale away from water – this scale is not water resistant. Shock, injury and
electrical damage can occur if used in a wet location!
1
**SPECIAL WARNING**
Cell-Phones, Cordless-Phones, and any radio-frequency device can cause
temporary interference and cause the scale to temporarily not work properly.
Please do not use any electronic device near the SCALE. Just like in an
Airplane, do not use your cell-phone near the scale when it is in use. While
there is NO risk of permanent damage to the scale, interference can cause an
incorrect calibration or incorrect weight readings.
6

FEATURES
PARTS DESCRIPTION
Auto shut off (selectable)
Auto calibration – with lb or kg weight unit
Auto zero tracking
Auto hold (selectable)
21 bit A/D processor
2 million internal resolutions
g , lb, oz, kg , lb/oz conversion
Large LCD (5 digits 15 mm high)
Large square weighing tray
5
BACK SIDE
AC adaptor
Socket
ON/OFF key
Turns the scale
power on/off.
UNITS key
Changes weighing units, e.g. g, lb:oz,kg,lb,oz.
ZERO/TARE key
Sets display to zero or
Subtracts weight of a container.
HOLD key
Remain on the display for 120 seconds
BOTTOM
Batteries
Use 3xAAA dry batteries (not included)
Battery compartment cover
DISPLAY
ZERO indicator Weighing unit
Negative value indicator
Hold indicator
Stable indicator
2

HOLD FUNCTION
WEIGHING
Once the HOLD key is pressed, the weight will remain on the display for 120
seconds after the item has been removed from the scale so the weight can
easily be read.
1) Place the item on the scale platform.
2) Wait for the stable weights to be displayed.
3) Press the HOLD key. The “HOLD” hold indication will turn-on.
4) Remove the item from the scale platform. The item’s weight will remain on
the display for 120 seconds. You can now also convert this to other
measures (example: lb or kg) by pressing the UNITS key
5) To quit HOLD function, press the HOLD key again.
FUNCTION SETTINGS
1. With the scale in OFF position, press and hold the [ZERO/TARE] key and
turn on the scale by pressing [ON/OFF] key. The display will show A_ON
or A_OFF.
2. Auto shut off mode.
Press the [ZERO/TARE] key, the display will show A_ON or A_OFF.
A_ON means the auto shut off function active. Press [ZERO/TARE] again,
the display will show A_OFF, this means the auto shut off function inactive.
3. Auto backlight mode.
Press [UNITS] key, the display will show L_ON or L_OFF, press
[ZERO/TARE], selection display L_ON, this means backlight function
active, press [ZERO/TARE] again, the display will show L_OFF, this
means backlight function inactive.
3. Auto HOLD mode.
Press [UNITS] key, the display will show H_ON or H_OFF, press
[ZERO/TARE], selection display H_ON, this means AUTO-HOLD function
active. Press [ZERO/TARE] again, the display will show H_OFF, this
means AUTO-HOLD function inactive.
4. Return to weighing mode.
Press [ON/OFF] to turn the power off, press [ON/OFF] again to turn on the
power and the scale will return to weighing mode.
3
Whenever possible, please allow the scale to warm up for several seconds after
first turning the power on so that the scale will function properly and accurately.
Error messages
Err-O: Overload
Lob: Low battery
Weighing Procedures
1. Press [ON/OFF] to turn on the scale. The display will count down from
“99999” to “11111” for a few seconds and “0” will appear on the display.
2. Select the weighing unit by pressing [UNITS] key.
3. The selected unit will be display on the cursor next to the weight value.
4. Start weighing. Make sure the display is “0”, if not press the [ZERO/TARE]
key to zero the scale.
5. If you are using a container or tray, place the empty container on the scale,
wait for the stability indicator to be displayed, press [ZERO/TARE], and the
display will read “0” with the tray or container on top.
6. Place your objects to be weighed on the container. The weight will be
displayed once the scale is stable.
4