Milfra KS811

Milfra Tuya Zigbee Smart Wall Switch User Manual

Model: KS811 | Brand: Milfra

1. Introduction

The Milfra Tuya Zigbee Smart Wall Switch is designed to provide intelligent control over your home lighting. This smart switch integrates with Zigbee networks and the Tuya Smart Life app, allowing for remote control, voice commands via Google Assistant and Amazon Alexa, scheduling, and scene pattern settings. It supports both neutral wire and no-neutral wire installations, offering flexibility for various home electrical setups.

Milfra Tuya Zigbee Smart Wall Switch product overview with logos for Tuya, Zigbee, Google Assistant, and Amazon Alexa. Shows remote control via smartphone and voice control via smart speakers. Indicates compatibility with both neutral and no-neutral wiring.

Product overview highlighting smart features and wiring options.

2. Product Features

  • Flexible Wiring: Supports both neutral wire and no-neutral wire installations (AC100-240V).
  • No Capacitor Required: Enhanced stability without the need for an external capacitor.
  • Voice Control: Compatible with Amazon Alexa and Google Home for hands-free operation.
  • Mobile APP Remote Control: Control your lights from anywhere using the free Tuya or Smart Life app.
  • Timing & Scheduling: Set custom schedules and timers for automatic light control.
  • Status Feedback: Monitor the real-time status of your lights through the app.
  • Overload Protection: Built-in safety mechanism to prevent damage from electrical overloads.
  • Physical Button: Features a large, tactile physical button for manual control.
  • LED Indicator: Integrated LED light for easy navigation in the dark.
  • Scene Pattern Setting: Create and activate custom lighting scenes with a single tap in the app.
  • Family Sharing: Easily share control of the device with family members.

3. Specifications

AttributeValue
TypeSmart Wall Light Switch
ModelKS-811
Communication MethodZigbee
Power Supply ModeNeutral Wire Optional
Rated Current10A (Max)
Rated VoltageAC100-240V~, 50/60Hz
Load Power (LED Lamp)Max 150W
Load Power (INC Lamp)Max 600W
Wireless Frequency2.4GHz
Wireless StandardIEEE802.11b/g/n (Note: This refers to the standard for the Zigbee hub's connection to your home network, not the switch's direct connection.)
Product Size116mm x 75mm x 35mm
Product dimensions diagram showing the switch's height, width, and depth in millimeters.

Detailed product dimensions.

4. Package Contents

Please check the package contents upon receipt. If any items are missing or damaged, contact your retailer.

  • Milfra Tuya Zigbee Smart Wall Switch (1, 2, or 3 Gang, depending on model purchased)
  • Mounting Screws
  • User Manual

5. Safety Information

WARNING: Risk of Electric Shock. Improper installation can be dangerous or illegal. Consult a qualified electrician if you are unfamiliar with electrical wiring.

  • Always turn off power at the circuit breaker before installing or servicing the switch.
  • Ensure the switch is installed in a standard wall box.
  • Do not exceed the maximum load ratings for LED (150W) or Incandescent (600W) lamps.
  • This device is for indoor use only.
  • Keep out of reach of children.

6. Setup and Installation

6.1 Wiring Instructions

The Milfra Smart Wall Switch supports two wiring methods: with a neutral wire or without a neutral wire. Please identify your home's wiring configuration before proceeding.

  1. Turn off Power: Locate your circuit breaker and turn off the power to the switch you are replacing. Verify power is off with a voltage tester.
  2. Remove Old Switch: Carefully remove the old switch from the wall box.
  3. Identify Wires: Identify the Live wire (Line), Load wire(s), Neutral wire (if present), and Ground wire.
  4. Connect the Smart Switch: Follow the appropriate wiring diagram below for your installation type.

6.1.1 Neutral + Live Wire Version

If your electrical box has a neutral wire, follow this diagram:

Wiring diagram for Zigbee switch with Neutral and Live wires. Shows connections for Ground, Neutral, Live, and Load1, Load2, Load3 terminals to light bulbs.

Wiring diagram for installations with a neutral wire.

6.1.2 Single Live Wire Version (No Neutral Required)

If your electrical box does not have a neutral wire, follow this diagram. This switch does not require a capacitor for no-neutral setups.

Wiring diagram for Zigbee switch with only a Live wire (no neutral). Shows connections for Ground, Live, and Load1, Load2, Load3 terminals to light bulbs.

Wiring diagram for installations without a neutral wire.

Diagram illustrating that no capacitor is required for installation, showing both neutral and no-neutral wiring options with a crossed-out capacitor symbol.

Confirmation that no capacitor is required for either wiring method.

Attention: If there is no neutral wire in your house, please ignore the 'N' position for wiring. If there is a neutral wire, just use it normally.

  1. Secure the Switch: Once wired, gently push the switch into the wall box and secure it with the provided screws. Attach the faceplate.
  2. Restore Power: Turn the power back on at the circuit breaker.

6.2 Zigbee Hub Connection

This smart switch requires a Zigbee hub (gateway) to function with the Tuya/Smart Life app and voice assistants. Ensure your Zigbee hub is set up and connected to your home WiFi network.

Diagram showing the connection flow for the Smart Zigbee Switch: Switch connects to Gateway (Hub), which connects to WiFi Router. App Control and Voice Control interact with the Gateway.

System architecture showing the role of the Zigbee hub.

6.3 App Pairing

  1. Download App: Download the 'Tuya Smart' or 'Smart Life' app from your smartphone's app store (iOS/Android).
  2. Register/Login: Create an account or log in to your existing account.
  3. Add Device: In the app, tap '+' or 'Add Device'. Select 'Switch (Zigbee)' or similar category.
  4. Enter Pairing Mode: Follow the app's instructions to put the switch into pairing mode. This usually involves pressing and holding one of the switch buttons for a few seconds until an indicator light blinks.
  5. Confirm Pairing: The app will detect and add the switch. Rename the switch for easy identification (e.g., 'Living Room Light').

7. Operation

7.1 Physical Button Control

Each gang on the switch has a physical button. Press the button to manually turn the connected light ON or OFF. An indicator light will show the status.

Close-up of the smart switch showing the physical ON/OFF buttons and indicator lights.

Physical buttons and indicator lights on the switch.

7.2 APP Remote Control

Once paired with the Tuya/Smart Life app, you can control your lights from anywhere with an internet connection.

  • Open the app and select your switch.
  • Tap the virtual buttons to turn lights ON or OFF.
Smartphone screen showing the Tuya app interface controlling lights remotely, with a smart switch installed in a home.

Remote control via the mobile application.

7.3 Voice Control

Integrate your switch with Amazon Alexa or Google Home for voice commands.

  1. Link Account: In the Alexa or Google Home app, link your Tuya Smart/Smart Life account.
  2. Discover Devices: Ask Alexa/Google to discover new devices.
  3. Voice Commands: Use commands like "Alexa, turn on the living room light" or "Hey Google, turn off the bedroom light."
A woman relaxing on a couch, using voice commands with an Amazon Echo speaker to control a light connected to the smart switch.

Voice control integration with smart assistants.

7.4 Scheduling and Timers

Set up custom schedules to automate your lighting.

  • In the Tuya/Smart Life app, select your switch.
  • Go to the 'Schedule' or 'Timer' section.
  • Set specific times for lights to turn ON or OFF, and choose repeat days.
Smartphone app showing a schedule being set for lights in a kitchen, with options for turn on and turn off times.

Setting custom schedules for automated lighting.

7.5 Scene Patterns

Create personalized scenes to control multiple devices or set specific moods.

  • In the Tuya/Smart Life app, navigate to 'Smart' or 'Scenes'.
  • Create a new scene and add your smart switch, along with other smart devices.
  • Define actions (e.g., 'Home Mode' turns on specific lights, 'Sleep Pattern' turns off all lights).
Smartphone app displaying various scene patterns like 'Away from home mode', 'Home mode', 'Sleep patterns', and 'Theater mode', allowing one-key control of multiple lights.

One-key setting for various scene patterns.

7.6 Family Sharing

Allow other family members to control the smart switch.

  • In the Tuya/Smart Life app, go to 'Me' > 'Home Management'.
  • Add family members and grant them control permissions for your devices.
Smartphone app showing home settings and options to share device control with family members.

Sharing device control with family members.

8. Maintenance

  • Cleaning: Wipe the switch surface with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
  • Firmware Updates: Periodically check the Tuya/Smart Life app for available firmware updates to ensure optimal performance and security.
  • Environmental Conditions: Ensure the switch is not exposed to extreme temperatures or humidity.

9. Troubleshooting

ProblemPossible Solution
Switch not responding to app/voice commands.
  • Ensure the Zigbee hub is online and connected to your WiFi.
  • Check if the switch is within range of the Zigbee hub.
  • Verify the switch has power (indicator light should be on).
  • Restart the Zigbee hub and the smart switch.
  • Check app settings for device status.
Lights flicker or do not turn off completely.
  • Ensure the load power (wattage) of your lights is within the switch's specifications (Max 150W for LED, Max 600W for Incandescent).
  • For no-neutral installations, ensure the wiring is correct as per the diagram.
  • Some LED bulbs may require a specific type of smart switch; try a different brand/type of LED bulb if flickering persists.
Cannot pair the switch with the app.
  • Ensure the switch is in pairing mode (indicator light blinking).
  • Confirm your Zigbee hub is properly set up and connected to the app.
  • Move the switch closer to the Zigbee hub during pairing.
  • Reset the switch to factory settings (refer to app instructions for specific reset procedure, usually a long press of a button).
  • Ensure your phone is connected to a 2.4GHz WiFi network during pairing.
Voice control not working.
  • Verify your Tuya Smart/Smart Life account is correctly linked to Alexa/Google Home.
  • Ensure the smart assistant device is online and functioning.
  • Check the device name in the Alexa/Google Home app; it should match your voice command.
  • Try re-discovering devices in the Alexa/Google Home app.

10. User Tips

  • Stable Zigbee Network: For optimal performance, ensure your Zigbee hub is centrally located and has a strong, stable connection to all your Zigbee devices.
  • Label Wires: Before disconnecting any wires during installation, use electrical tape and a marker to label each wire (Live, Load, Neutral, Ground) to avoid confusion.
  • Test Before Finalizing: After wiring but before securing the switch completely, temporarily restore power to test if the switch powers on and responds to physical presses.
  • Group Control: Utilize the app's grouping feature to control multiple switches or lights simultaneously, even if they are different types.
  • Automate with Scenes: Leverage scene patterns for daily routines, such as a 'Good Morning' scene that gradually brightens lights or an 'Away' scene that turns off all lights and activates security features.

11. Warranty and Support

Milfra products are designed for reliability and performance. For warranty information, technical support, or assistance with your smart switch, please contact your original retailer or the manufacturer's customer service. Keep your purchase receipt as proof of purchase.

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