Optima Home Scales GEMINI User manual

version:1.0
OPTIMA HOME SCALES
User Manual
Kitchen Scale GEMINI
Thank you very much for selecting the OHS Kitchen Scale GEMINI.
OPTIMA HOME SCALES
PO BOX 1526 CUMMING GA 30028 UNITED STATES
TEL:[phone] www.optimahomescales.com
Please read the user manual carefully and thoroughly to ensure the safe
usage of this product and keep the manual for further reference in case
you have problems.

Table of Contents
Symbol Meaning
Symbol Meaning
Overview
................................................................................................................. 2
Device Components.......................................................................................................................3
Function Indication .........................................................................................................................3
LCD Display....................................................................................................................................4
Initial Start-Up
Insert the Batteries
Setting up the Unit
Daily Measurement
............................................................................................................... 5
.......................................................................................................... 6
Daily Measurement........................................................................................................................ 7
Measuring with Tare Function ....................................................................................................... 8
Troubleshooting ..............................................................................................................................10
Specifications ..................................................................................................................................11
Maintenance.....................................................................................................................................12
Warranty...........................................................................................................................................12
Appendix
EMC Guidance...............................................................................................................................13
1
Table of Contents

Symbol Meaning
The warning signs and symbols are essential to ensure your correct and safe use of
this product and protect you and others from injury. Please kindly find the meanings of the
warning signs and symbols, which you may encounter in the label and user manual, as
follows:
Symbol for “THE OPERATION
GUIDE MUST BE READ”
Symbol for “COMPLIES WITH EU
REQUIREMENTS”
Symbol for “DIRECT CURRENT”
Symbol for “ENVIRONMENT
PROTECTION –Waste electrical
products should not be disposed of with
household waste. Please recycle where
facilities exist. Check with your local
authority or retailer for recycling advice”
Symbol for “MANUFACTURER”
Care
•Please do not put the scale on carpet.
•Please put the weight object in the center of the scale platform to obtain a more
accurate weight.
•Please do not put items on platform when switch on.
•If the scale is not to being used for a long period, please remove thebatteries.
•Clean the scale with a slightly damp cloth, DO NOT immerse the scale inwater
or use chemical/abrasive cleaning agents.
•Do not leave the scale in a damp environment
Device Components
UNIT Button
LCD display
Function Indication
Bowl
ON/OFF/TARE Button
Battery Door
tare
Touch ON/OFF/TARE button to switch on.
Touch ON/OFF/TARE button to clear weight on the platform.
Touch and hold ON/OFF/TARE button for about 4s to turn off.
Touch UNIT button to select desired unit in weighing mode.
List
1. Kitchen Scale GEMINI
2. 2xAAA batteries (1.5V per each)
3. User Manual
4. A bowl
2 3
Symbol Meaning
Overview

LCD Display
4
Insert the Batteries
Open the battery door in the back of the scale.
Remove insulating strip from beneath the battery (if
fitted) or insert batteries (2 x 1.5V AAA) observing
the polarity signs (+ and -) inside the battery
compartment.
Close the battery door.
The LCD displays as below:
5
Initial Start-Up
Initial Start-Up
Tare Function
Pound
Milliliter
Gram
Fl:oz
Ounce
Negative Weight
CAUTION
When the symbol “ ” appears, indicating the batteries is not enough, you may replace with a new set of
batteries, when the symbol “Lo” appears, the device will power off, you shall replace with a new set of
batteries. Please replace both batteries at the same time. Do not mix the old batteries with the new ones.
Worn batteries are hazardous waste. Do NOT dispose of them together with the household garbage.
Please refer to the local ordinances and recycling instructions regarding disposal of the worn batteries.
To achieve the best performance and protect your scale, please use the authorized/specified batteries.

Setting Up the Unit
1. When in the weighing mode, press the UNIT button,
you can select the unit among g, fl:oz., lb:oz, ml.
(The default unit is g.)
6
Daily Measurement
Please process the unit setting before your first measurement.
(Refer to Setting Up the Unit for more details)
1. Place the scale on a solid surface and ensure that it is level.
2. Do not put any things on the scale.
3. Touch the ON/OFF/TARE button lightly to enter the weighing mode.
4. You can start to weigh when “0” is shown on the LCD.
5. Put the things in the middle of the scale, the weight data will be shown.
7
CAUTION
When finishing the unit selection, you may start to weigh according to the
weighing procedure below.
If there is no operation, the scale will turn off automatically in about 1 minute.
Or you can touch and hold the ON/OFF/TARE button for about 4s to turn off it.
Initial Start-Up
Daily Measurement
CAUTION
If there is no operation, the scale will turn off automatically in
about 1 minute. Or you can touch and hold the
ON/OFF/TARE button for about 4s to turn off it.

Measuring with Tare Function
1. When the scale is off, touch the ON/OFF/TARE button to enter the
weighing mode. You can start to weigh when “0” is shown onthe
LCD.
2. Put the container on the scale, then put the things in the container,
the weight data will be shown.
3. Touch the ON/OFF/TARE button, the LCD will display “0”.
4. Take off the things from the container, the LCD will display the negativeweight.
5. When it displays the negative weight, touch the ON/OFF/TARE button again,
it will clear to zero.
6. If there is no operation, the scale will turn off automatically in about 1 minute.
Or you can touch and hold the ON/OFF/TARE button for about 4 seconds to
turn off the scale.
8 9
Daily Measurement
CAUTION
When the weight is less than 600g, press the ON/OFF/TARE
button, the icon “Tare” won’t appear.
Daily Measurement

Troubleshooting Specifications
About the Accuracy of This Product
This product passes strict inspection before delivery and therefore its accuracy is guaranteed by the manufacturer.
Please refer to the above table for the descriptions on accuracy.
WARNING: No modification of this equipment is allowed.
10 11
Product Name
Kitchen Scale
Dimension
Whole size for scale: 190×140×25mm (Approximately)
Net Weight
Approximately 320g
Display
Digital LCD
Measurement Unit
g/fl:oz/lb:oz/ml
Measurement Range
5000 g/176.4 fl:oz/11 lb:0.4 oz/5000 ml
Minimal Weight
2g
Division
1g /0.1fl:oz/0.1oz/1ml
Accuracy
F.S*3‰+1d
Working Environment
Temperature: 5℃to 40℃Relative Humidity: ≤90% RH
Atmospheric pressure: 86kPa to 106kPa
Storage Environment
Temperature: -20℃to 60℃Relative Humidity: ≤90% RH
Atmospheric pressure: 50kPa to 106kPa
Power Source
3V (2xAAA batteries)
Auto-Off
About 1 minute after clearing,
or about 1 minute after the weight is stable.
Accessories
1. 2x AAA batteries
2. User Manual
3. A bowl
Mode of Operation
Continuous Operation
Problem
Root Cause
Solution
The LCD display
The power is not enough.
Remind you to change the
batteries.
The LCD display
is dim or displays Lo
The power is not enough.
Please replace with 2xAAA
new batteries.
The device isn’t
on when you press
the start button.
The battery is exhaust.
Please replace with 2 x AAA
new batteries.
The battery is not
inserted correctly.
Please insert the battery
according to the indication
correctly.
The LCD displays
Overload.
Please remove the weight on
the scale to protect the loadcells.
Suggest buy a new scale with
higher weight range.
The LCD displays
Before you turn on the scale,
there is some things on the
scale which are over 1000g.
Remove the things from the
scale, wait until it displays zero,
then you can start weighing.
The measurement
is not accurate/
LCD .
The weight is unstable when
you turn on the scale.
Keep the weight stable when you
turn on the scale.
Troubleshooting
Specifications

Maintenance
When carrying out usual maintenance, please ensure practice of the following Do’s and
Don’ts:
DO use a dry soft cloth to wipe the dust.
DO use a wet soft cloth, dipped into water and wrung out, to wipe the dirt. Then use a
dry soft cloth to dry up the device.
DON’T wash the device with water or immerse it in water.
DON’T use propellant, abrasive or other chemicals to wipe the dirt in avoidance of
discolor or malfunction.
DON’T disassemble this device. If you have any problems, please contact OHS.
(Please refer to Warranty for contact information)
EMC Guidance
1. MEDICAL ELECTRICAL EQUIPMENT needs special precautions regarding EMC and
needs to be installed and put into service according to the EMC information provided in
the ACCOMPANYING DOCUMENTS.
2. Wireless communications equipment such as wireless home network devices, mobile
phones, cordless telephones and their base stations, walkie-talkies can affect this
equipment and should be kept at least a distance d = 3,3 m away from the equipment.
(Note. As indicated in Table 6 of IEC 60601-1-2:2007 for ME EQUIPMENT, a typical cell
phone with a maximum output power of 2 W yields d = 3,3 m at an IMMUNITY LEVEL of
3 V/m)
Warranty
OHS warrants its products free of defects in materials and workmanship in normal
use for a period of TEN years from the date of retail purchase.
This warranty does NOT cover damages caused by misuse or abuse, including but not
limited to:
Failure caused by unauthorized repairs or modifications;
Damage caused by shock or drop during transportation;
Failure caused by improper operation inconsistent with the instructions stated in this user
manual;
Malfunction or damage from failure to provide the recommended maintenance;
Damage caused by improper use of power supply.
Should this device require maintenance (or replacement at our option) under warranty,
please deliver the original package to OPTIMA HOME SCALES prepaid. Please return
the store receipt (with the retail purchase date) and a note with reasons to return on it
as well.
12 13
Maintenance
Appendix
OPTIMA HOME SCALES
PO BOX 1526 CUMMING GA 30028 UNITED STATES
Tel: [phone]
Website: www.optimahomescales.com