Installing Your Wemo WiFi Smart Light Switch

Intermediate 20-30 minutes

What You'll Need

  • Wemo WiFi Smart Light Switch
  • Neutral wire (required - white wire in switch box)
  • Single-pole light circuit
  • Smartphone with Wemo app
  • 2.4GHz Wi-Fi network
  • Screwdriver and wire strippers
  • Voltage tester

Step-by-Step Setup

  1. Turn off power: Switch off the circuit breaker controlling the light switch. Verify power is off with a voltage tester.
  2. Remove existing switch: Unscrew the faceplate and switch. Note the wire connections before disconnecting.
  3. Identify wires: You need: line (hot from panel), load (to light fixture), neutral (white bundle), and ground (green or bare copper).
  4. Connect the Wemo switch:
    • Black wire → Line (hot)
    • Red wire → Load (to light)
    • White wire → Neutral bundle
    • Green wire → Ground
  5. Secure connections: Use wire nuts to connect each wire. Tug gently to ensure connections are solid.
  6. Mount the switch: Carefully fold wires into the box. Screw the switch into the electrical box.
  7. Install faceplate: Attach the included faceplate.
  8. Restore power: Turn the circuit breaker back on. The switch LED will blink amber.
  9. Download Wemo app: Install and add the switch by following the in-app setup wizard.
  10. Connect to Wi-Fi: The app will guide you through connecting to your 2.4GHz network.

Key Features

  • Works with regular bulbs (no smart bulbs needed)
  • Works with Alexa and Google Assistant
  • Apple HomeKit compatible
  • Away mode randomizes lights
  • Scheduling via app
  • No hub required
  • Physical switch still works normally
  • Firmware updates via app

Troubleshooting

  • Switch not turning on: Verify power is restored at breaker. Check all wire connections. Ensure neutral wire is connected.
  • LED meanings: Solid amber = ready for setup. Blinking amber = connecting. Solid green = connected and on. Solid red = error.
  • Won't connect to Wi-Fi: Only 2.4GHz networks supported. Move router closer during setup. Reset switch by pressing and holding for 5 seconds until LED blinks.
  • Light flickers: May indicate loose wire connection. Turn off power and check all connections. Ensure load wire is properly connected.
  • HomeKit not discovering: Scan the HomeKit code on the switch again. Ensure iPhone is on same Wi-Fi network. Try resetting the switch.