1. Введение и информация по безопасности
This manual provides essential information for the safe and efficient operation of your Din Rail AC Power Meter. Please read it thoroughly before installation and use.
Важные примечания по безопасности:
- Изделие предназначено только для использования внутри помещений.
- The product is designed for Alternating Current (AC) circuits only.
- Ensure that the measured voltage and current do not exceed the calibration range specified in the product parameters.
- Критический: Connect the wires correctly according to the wiring diagram. Incorrect wiring can cause severe damage to the device and pose a safety hazard.
- Product dimensions and colors are subject to the actual product.
2.Основные характеристики
The KWS-303 series Din Rail AC Power Meter offers a comprehensive solution for monitoring electrical parameters with advanced features:
- 8-in-1 Digital Display: Одновременно отображает Voltage, Current, Power, Frequency, Power Factor, Active Energy, Timing, and Temperature on a single screen for real-time monitoring.
- High-Definition TFT Color Screen: Features a 0.96-inch TFT color screen with a wide viewing angle and high contrast, ensuring easy readability even in low-light conditions.
- Mobile Remote Control (KWS-303WF only): Supports WiFi networking and cloud remote control via a mobile application (Smart Life APP or Tuya Smart App), allowing you to monitor and control devices anytime, anywhere. Multiple timed data sets can be added for automated power management.
- Standard Din Rail Mounting: Designed for standard guide rail installation, offering convenient, screw-free, and fastener-fixed setup.
- Compact and Easy Installation: Small size allows for installation in distribution boxes. Simple wiring makes it manageable without professional electrical assistance.
- Широкий спектр применения: Ideal for use in high and low power distribution cabinets, factories, warehouses, commercial buildings, shopping malls, and residential settings.



3. Технические характеристики
| Параметр | KWS-303WF | KWS-303L | КВС-303 |
|---|---|---|---|
| Номер модели | KWS-303WF | KWS-303L | КВС-303 |
| Томtage Диапазон | Переменный ток 100-290 В | Переменный ток 100-290 В | Переменный ток 85-290 В |
| Текущий диапазон | 0-40А | 0-40А | 0-40А |
| Диапазон мощности | 0-12кВт | 0-12кВт | 0-12кВт |
| Диапазон времени | 99 дней | 99 дней | 99 дней |
| Диапазон электрической энергии | 0-9999 кВтч | 0-9999 кВтч | 0-9999 кВтч |
| Диапазон температур | -20~150 °С | -20~150 °С | -20~150 °С |
| Диапазон частот | 50-60Гц | 50-60Гц | 50-60Гц |
| Коэффициент мощности | 0.00-1.00PF | 0.00-1.00PF | 0.00-1.00PF |
| Выключение памяти | Да | Да | Да |
| ОверволtagЭлектронная защита | Да | Да | Да |
| АндерволtagЭлектронная защита | Да | Да | Да |
| Защита от перегрева | Да | Да | Да |
| Таймер | ПРИЛОЖЕНИЕ Да | Нет | Нет |
| Регулировка яркости экрана | Да | Да | Да |
| Переворот экрана | Да | Да | Да |
| Сброс батареи | Да | Да | Да |
| Сброс таймера | Да | Да | Да |
| Wi-Fi | Да | Нет | Нет |
| Кривая диаграмма | ПРИЛОЖЕНИЕ Да | PC Yes | Нет |
| 485 Коммуникация | Нет | Да | Нет |
| Размеры | 86*83*25 мм | ||
| Товары для самостоятельного изготовления | Электрические | ||
| Тип дисплея | Только цифровые | ||
| Фаза | Однофазный | ||
| Источник питания | AC | ||
Note: All data and parameters are for reference only.


4. Содержимое упаковки
Открыв посылку, вы обнаружите следующее:
- 1 x Din Rail AC Monitor (KWS-303, KWS-303L, or KWS-303WF model as ordered)
5. Установка
5.1 Монтаж
The KWS-303 series meters are designed for standard Din Rail mounting. No screws or fasteners are required for installation; simply snap the device onto the Din Rail.


5.2 Схема электропроводки
Ensure all power is disconnected before attempting any wiring. Connect the input and output wires as shown in the diagram below. The blue line represents the Zero line (N), and the red line represents the Firing line (L).
- Этот продукт подходит для использования в помещении.
- This product is suitable for communication.
- Измеренный объемtage and current shall not exceed the calibration range.
- Be sure to connect the cables correctly.

6. Первоначальная настройка и конфигурация
6.1 Работа дисплея
The meter's display provides real-time data. The buttons below the screen allow for navigation and settings adjustments.

6.2 Setting Function Operation
To access the setting menu, hold down the ON/OFF key for 5 seconds. Use the '+' and '-' buttons to navigate and adjust values.
- Шаг 1: In the system settings page, click the '-' key to move the cursor to the overvoltage protection position. Then press ON/OFF to select the value, then press '+' to adjust it to the value you need. Then press ON/OFF to save the adjustment, and then press '+' to select other settings.
- Шаг 2: If you do not need to set, press the '-' key to move the cursor to the exit position, and then press ON/OFF to return to the home page.
- Шаг 3: All following settings (Overvoltagэлектронная защита, Андерволtage protection, Overcurrent protection, Overload protection, Power protection, Overtemperature protection, Power-off ultra-low, Screen brightness, Screen saver time, Screen flip, Language setting, Timing off, Timing on, Data clear, Factory Settings) are adjusted in the same way.

6.3 WiFi Connection (KWS-303WF only)
For models with WiFi functionality (KWS-303WF), follow these steps to connect to the cloud remote control:
- Шаг 1: Download the Smart Life APP or Tuya Smart App from your mobile app store.
- Шаг 2: For WiFi connection or reset operation mode: Long press the '+' button under the home screen display until the WiFi sign flashes in the upper right corner of the screen. Then, open the mobile APP for connection.

7. Операция
7.1 Reading Data
Once installed and powered on, the meter will automatically display the 8 electrical parameters on its TFT color screen. You can cycle through different views or access detailed information using the control buttons.
7.2 Mobile Remote Control (KWS-303WF only)
After successfully connecting the KWS-303WF model to the Smart Life or Tuya Smart App, you can remotely monitor and control the device. This includes viewing real-time data, setting timing switches, and managing multiple devices.


7.3 Share Management (KWS-303WF only)
The mobile application allows for share management, enabling multiple users to control the same device or a single user to control multiple devices. This feature is useful for household or small business environments.

8. Техническое обслуживание
- Содержите устройство в чистоте и не допускайте попадания на него пыли. Для чистки используйте мягкую сухую ткань.
- Не подвергайте устройство воздействию экстремальных температур и влажности.
- Do not attempt to open or repair the device yourself, as this will void the warranty and may cause damage or injury.
- Регулярно проверяйте надежность соединений проводки.
9. Поиск Неисправностей
- Нет дисплея/питания: Проверьте подключение питания и проводки. Убедитесь, что громкостьtagе находится в указанном диапазоне.
- Неправильные показания: Verify that the wiring is correct (Zero line and Firing line). Ensure the current and voltage are within the meter's operational range.
- WiFi Connection Issues (KWS-303WF): Ensure your router is 2.4GHz (5GHz is not supported). Check that the WiFi signal is strong. Try resetting the meter's WiFi by long-pressing the '+' button until the WiFi icon flashes, then re-attempt connection via the app.
- Кнопки не реагируют: Ensure the device is powered on. If the issue persists, try a power cycle (turn off and on).
10. Советы пользователю
- For optimal performance and accurate readings, ensure the meter is installed in a stable environment away from direct heat sources or excessive vibrations.
- Utilize the mobile app's timing functions (KWS-303WF) to automate power control for appliances, saving energy and enhancing convenience.
- Regularly check the displayed parameters to identify any unusual power consumption patterns or potential electrical issues in your system.
11. Гарантия и поддержка
По любым вопросам технической поддержки, гарантийных претензий или поддержки обращайтесь непосредственно к продавцу или производителю. Сохраните чек в качестве подтверждения покупки.