KWS-303 Series KWS-303 Series

8-in-1 Din Rail AC Power Meter Instruction Manual

Models: KWS-303, KWS-303L, KWS-303WF

1. Introduzione è Information Safety

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.

Note di sicurezza impurtanti:

  • Stu pruduttu hè adattatu solu per l'usu interni.
  • 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.
  • Criticu: 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. Funzioni chjave

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: Simultaneously displays 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.
  • Ampia gamma di applicazioni: Ideal for use in high and low power distribution cabinets, factories, warehouses, commercial buildings, shopping malls, and residential settings.
Multi-function Electricity Meter with key specifications (Voltage, Current, Power, Timing, Energy, Temperature, Frequency, Power Factor).
Figure 2.1: Multi-function Electricity Meter with key specifications.
Illustration of the 0.96-inch TFT color screen, highlighting wide viewing angle and high contrast for easy reading.
Figure 2.2: High-definition TFT Color Screen for clear readings.
Infographic detailing new intelligent upgrade features: Flame retardant material, Din Rail, Small size, Convenient operation, TFT color screen, Copper terminals, High sensitivity, Home recommendation.
Figure 2.3: Intelligent upgrade features of the meter.

3. Specifiche tecniche

ParametruKWS-303WFKWS-303LKWS-303
Numero di mudelluKWS-303WFKWS-303LKWS-303
Voltage GammaAC 100-290VAC 100-290VAC 85-290V
Gamma attuale0-40A0-40A0-40A
Range di putenza0-12 kW0-12 kW0-12 kW
Gamma di timing99 ghjorni99 ghjorni99 ghjorni
Electric Energy Range0-9999 kWh0-9999 kWh0-9999 kWh
Gamma di temperatura-20~150 °C-20~150 °C-20~150 °C
Gamma di Frequency50-60 Hz50-60 Hz50-60 Hz
Fattore di putenza0.00-1.00 PF0.00-1.00 PF0.00-1.00 PF
Power Off Memoria
Overvoltage Prutezzione
Undervoltage Prutezzione
Prutezzione di Overtemperature
Interruttore di timingAPP IèInnòInnò
Ajustamentu di a luminosità di u screnu
Flip Screen
Resettate di a Batteria
Reset di u timer
Wi-FiInnòInnò
Graficu di curvaAPP IèPC YesInnò
485 A cumunicazioneInnòInnò
Dimensioni86 * 83 * 25 mm
Forniture fai-da-teElettricu
Tipu di visualizazioneSolu Digitale
FaseFase unica
Alimentazione elettricaAC

Note: All data and parameters are for reference only.

Product dimensions diagram for the KWS-303L model, showing 82mm height, 50mm width, and 24mm depth.
Figure 3.1: Product Dimensions (KWS-303L shown as example).
Overview of the 8-in-1 Din Rail AC Power Meter, showing KWS-303, KWS-303WF, and KWS-303L models with their respective displays.
Figure 3.2: Different models in the KWS-303 series.

4. Cuntenutu di u pacchettu

À l'apertura di u vostru pacchettu, duvete truvà:

  • 1 x Din Rail AC Monitor (KWS-303, KWS-303L, or KWS-303WF model as ordered)

5. Installazione

5.1 Muntamentu

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.

Diagram showing the standard guide card slot and mounting design for Din Rail installation.
Figure 5.1: Din Rail Mounting Design.
Image demonstrating standard Din Rail mounting, emphasizing screw-free snap fastening.
Figure 5.2: Standard Rail Bay Mounting.

5.2 Schema di cablaggio

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).

  • Stu pruduttu hè adattatu per l'usu interni.
  • This product is suitable for communication.
  • U volu misuratutage and current shall not exceed the calibration range.
  • Be sure to connect the cables correctly.
Wiring diagram for simple installation, showing input/output connections for both KWS-303WF and KWS-303 models, with zero line (blue) and firing line (red).
Figure 5.3: Wiring Diagram for KWS-303WF and KWS-303.

6. Configurazione è cunfigurazione iniziale

6.1 Funzionamentu di a visualizazione

The meter's display provides real-time data. The buttons below the screen allow for navigation and settings adjustments.

Detailed view of the KWS-303WF display, labeling voltage, current, active power, electric energy, keep time, power factor, status display, on-off state, sensor temperature, and temperature sensing interface.
Figure 6.1: Detailed Display Breakdown (KWS-303WF).

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.

  1. Passu 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.
  2. Passu 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.
  3. Passu 3: All following settings (Overvoltage prutezzione, Undervoltage 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.
Display diagram showing how to install and operate, with an example of setting over-voltage protection by holding the ON/OFF key.
Figure 6.2: Setting Function Operation Example.

6.3 WiFi Connection (KWS-303WF only)

For models with WiFi functionality (KWS-303WF), follow these steps to connect to the cloud remote control:

  1. Passu 1: Download the Smart Life APP or Tuya Smart App from your mobile app store.
  2. Passu 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.
WiFi networking cloud remote intelligent control connection tutorial, showing steps for downloading Smart Life/Tuya Smart App and connecting via WiFi.
Figure 6.3: WiFi Connection Tutorial.

7. Operazione

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.

Illustration of mobile remote control functionality, showing a smartphone controlling the meter from a distance.
Figure 7.1: Mobile Remote Control in action.
Illustration of setting a timer switch on the meter via mobile phone, showing multiple timing data groups.
Figure 7.2: Setting a Timer Switch via Mobile App.

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.

Illustration of mobile app share management, allowing multiple users to control multiple switches.
Figure 7.3: Share Management for Multi-person Control.

8. Mantenimentu

  • Mantene l'apparechju pulitu è ​​senza polvere. Aduprate un pannu dolce è asciuttu per a pulizia.
  • Evite l'esposizione di u dispositivu à temperature estreme o umidità.
  • Do not attempt to open or repair the device yourself, as this will void the warranty and may cause damage or injury.
  • Verificate regularmente i cunnessione di i fili elettrici per assicurassi ch'elli sianu sicuri.

9. Risoluzione di prublemi

  • Nisun Display/Alimentazione: Verificate l'alimentazione è i cunnessione di i fili. Assicuratevi chì u vulumetage se situe dans l'intervalle spécifié.
  • Letture incorrette: 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.
  • Pulsanti chì ùn rispondenu micca: Ensure the device is powered on. If the issue persists, try a power cycle (turn off and on).

10. Cunsiglii d'utilizatori

  • 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. Garanzia è Support

For any technical assistance, warranty claims, or support inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.

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