1. Муқаддима
This manual provides comprehensive instructions for the proper use and maintenance of your Horizon SF-400D Digital Precision Scale. Please read this manual thoroughly before operating the device to ensure accurate measurements and prolong its lifespan.
The Horizon SF-400D is a versatile digital precision scale designed for various weighing applications, including jewelry, coins, herbs, spices, and medication. It offers high accuracy and multiple weighing modes, along with a convenient counting function.

Расми 1: Horizon SF-400D Digital Precision Scale. This image shows the overall design of the scale, featuring a black body, a stainless steel weighing platform, and a blue backlit LCD display with control buttons.
2. Чорабиниҳои бехатарӣ
- Do not overload the scale beyond its maximum capacity of 500g.
- Avoid exposing the scale to extreme temperatures, humidity, or direct sunlight.
- Тарозуро аз майдонҳои сахти электромагнитӣ дур нигоҳ доред.
- Тарозуро бо нарм тоза кунед, гamp матоъ. Тозакунакҳои абразивиро истифода набаред ё дастгоҳро ба об нагузоред.
- Ensure the scale is placed on a stable, level surface during operation to ensure accuracy.
3. Қисмҳои маҳсулот
Familiarize yourself with the main parts of your SF-400D scale:
- Платформаи вазн: Сатҳи аз пӯлоди зангногир барои ҷойгир кардани ашё.
- Намоиши LCD: Backlit screen showing weight, units, and other indicators.
- Тугмаи фурӯзон/хомӯш: Миқёсро фаъол ё хомӯш мекунад.
- Тугмаи MODE: Changes weighing units (g, oz, ct, dwt, gn, T).
- Тугмаи TARE: Resets the display to zero, useful for weighing items in a container.
- PCS Button: Activates the piece counting function.
- Тугмаи CAL: Used for calibration.
- Пойҳои танзимшаванда: Located on the bottom for leveling the scale.
- Сатҳи ҳубобӣ: Integrated on the scale to assist with leveling.

Расми 2: Close-up of the SF-400D display and control buttons. This image highlights the LCD screen, showing various unit indicators (g, ct, dwt, gn, T, oz), and the function buttons: PCS, MODE, TARE, ON/OFF, and CAL.

Расми 3: Underside of the SF-400D scale showing adjustable legs. Green arrows indicate the location of the four adjustable feet, which are used to level the scale for accurate measurements.
4. Танзимот
4.1. Таъмини барқ
The SF-400D scale operates on two AA batteries (included) or an optional AC power adapter (not included).
- Сарпӯши қисмати батареяро дар поёни тарозу кушоед.
- Ду батареяи АА-ро ҷойгир кунед, ки қутбияти дурустро таъмин кунед (+/-).
- Қисмати батареяро пӯшед.
- Alternatively, connect a compatible AC power adapter (6V, amperage not specified in product details, consult manufacturer if needed) to the power port.
4.2. Placement and Leveling
For optimal accuracy, the scale must be placed on a stable, flat, and level surface.
- Place the scale on your desired weighing surface.
- Observe the integrated bubble level.
- Adjust the four adjustable legs on the bottom of the scale by rotating them until the bubble is centered within the level indicator.
5. Дастурҳои истифодабарӣ
5.1. Тарозуи асосӣ
- -ро пахш кунед ФУРУШ/ХОМУШ button to turn on the scale. The display will show "88888" and then "0.00" (or "0.0" depending on the unit).
- If the display does not show zero, press the ТАРЕ тугмаро барои сифр кардани миқёс.
- -ро пахш кунед РЕЖИМ button to select your desired weighing unit (g, oz, ct, dwt, gn, T).
- Gently place the item(s) to be weighed on the center of the stainless steel platform.
- Read the stable weight displayed on the LCD screen.
- Барои хомӯш кардани тарозу, тугмаи ФУРУШ/ХОМУШ button for a few seconds. The scale also features an auto shut-off function to conserve battery power.
5.2. Функсияи дарё
The Tare function allows you to subtract the weight of a container, so only the contents are weighed.
- Place an empty container on the weighing platform.
- Wait for the display to stabilize and show the container's weight.
- -ро пахш кунед ТАРЕ button. The display will reset to "0.00" (or "0.0").
- Ашёҳоеро, ки мехоҳед вазн кунед, ба зарф илова кунед. Акнун дар экран танҳо вазни холиси ашё нишон дода мешавад.
- To clear the tare, remove all items from the platform and press ТАРЕ again if the display does not return to zero automatically.
5.3. Piece Counting Function (PCS)
This function is useful for counting multiple identical items.
- Turn on the scale and ensure it is zeroed.
- -ро пахш кунед PCS button. The display will show "PCS" and a sample size (e.g., "25", "50", "75", "100").
- -ро пахш кунед РЕЖИМ button to cycle through the available sample sizes (25, 50, 75, 100 pieces). Select the sample size that matches the number of items you will place on the scale for sampлинг
- Place the exact number of sample items (e.g., 25 pieces) onto the weighing platform according to your selected sampандоза.
- -ро пахш кунед PCS барои тасдиқи s дубора тугмаро пахш кунедample. The display will now show the number of pieces.
- You can now add more items of the same type, and the scale will display the total count.
- To exit the counting mode, press the РЕЖИМ тугма.
5.4. Калибрченкунӣ
Calibration ensures the accuracy of your scale. It is recommended to calibrate the scale periodically or if you suspect inaccurate readings. You will need a known calibration weight (e.g., 500g) for this process.

Расми 4: SF-400D display showing "CAL" during calibration mode. This image illustrates the scale's screen indicating it is in calibration mode, prompting the user to place a calibration weight.
- Ensure the scale is on a stable, level surface and turned off.
- -ро пахш карда нигоҳ доред КАЛ кнопкаро пахш кунед ФУРУШ/ХОМУШ тугмаро ҳамзамон пахш кунед. Вақте ки дар экран "CAL" пайдо мешавад, ҳарду тугмаро раҳо кунед.
- The display will then show a flashing weight value (e.g., "500.00g"). This is the required calibration weight.
- Place the exact calibration weight (e.g., 500g) onto the center of the weighing platform.
- Wait for the display to stabilize and show "PASS" or return to normal weighing mode. This indicates successful calibration.
- Remove the calibration weight. The scale is now calibrated and ready for use.
- If "FAIL" or an error message appears, repeat the calibration process.
6. Нигоҳдорӣ
6.1. Тозакунӣ
- Wipe the scale surface with a soft, slightly damp матоъ.
- Do not use harsh chemicals, abrasive cleaners, or immerse the scale in water.
- Боварӣ ҳосил кунед, ки тарозу пеш аз нигоҳдорӣ ё истифодаи минбаъда комилан хушк аст.
6.2. Нигоҳдорӣ
- Тарозуро дар ҷои хунук ва хушк, дур аз нури бевоситаи офтоб ва ҳарорати аз ҳад зиёд нигоҳ доред.
- Агар барои муддати тӯлонӣ нигоҳ дошта шавад, батареяҳоро хориҷ кунед, то аз шоридан пешгирӣ карда шавад.
7. Баррасии мушкилот
| Мушкилот | Сабаби эҳтимолӣ | Ҳалли |
|---|---|---|
| Миқёс фаъол намешавад. | Low or dead batteries; incorrect battery installation; no power from AC adapter. | Replace batteries; check battery polarity; ensure AC adapter is properly connected and functional. |
| Хониши нодуруст. | Scale not level; unstable surface; needs calibration; overloaded; strong air currents or vibrations. | Ensure scale is level using adjustable legs and bubble level; place on stable surface; perform calibration; do not exceed 500g capacity; operate in a stable environment. |
| "O_Ld" or "EEEE" displayed. | Миқёс аз ҳад зиёд бор карда шудааст. | Remove excess weight immediately. Do not exceed 500g capacity. |
| Display shows "UNST". | Unstable environment or surface. | Move the scale to a more stable location, away from vibrations or drafts. |
| Counting function not working correctly. | с нодурустample size selected; sample items not identical in weight. | Боварӣ ҳосил кунед, ки сample size matches the number of items placed for sampling; use identical items for accurate counting. |
8. Мушаххасоти
| Хусусият | Тафсилот |
|---|---|
| Модели | SF-400D |
| Иқтидор | 500 grams (g) / 17.5 ounces (oz) |
| Accuracy (Readability) | 0.01 grams (g) / 0.0005 ounces (oz) |
| Усулҳои вазн | g (grams), oz (ounces), ct (carats), dwt (pennyweights), gn (grains), T (troy ounces), pcs (pieces) |
| Маводи платформа | Пулоди Зангнамезадагӣ |
| Platform Diameter | 4.2 инч |
| Намоиш | LCD бо равшании пушти сар |
| Қувва | 2 x AA batteries (included) or 6V AC adapter (not included) |
| Андозаҳо (L x W x H) | 8.25" x 6.0" x 1.75" |
| Вижагиҳо | Tare function, Piece Counting, Auto Shut-Off, Backlit Display, Adjustable Legs, Bubble Level |
9. Кафолат ва дастгирӣ
For warranty information or technical support, please refer to the documentation included with your purchase or contact the retailer. Specific warranty terms may vary by region and retailer.
For general inquiries or to explore other products, you may visit the Horizon Store on Amazon.





