How to Set Up Your Meross Smart Outdoor Plug

Beginner 5-10 minutes

What You'll Need

  • Meross Smart Outdoor Plug (MSS620)
  • Meross app (iOS or Android)
  • Meross account
  • 2.4GHz Wi-Fi network
  • Outdoor GFCI-protected outlet

Step-by-Step Setup

  1. Plug the MSS620 into an outdoor GFCI outlet. Make sure the outlet's weatherproof cover can still close around the plug's cord.
  2. Download the Meross app if you have not already, and sign in.
  3. Add the device in the app:
    • Tap "+" and select the outdoor plug from the device list
    • Confirm both outlet LEDs are flashing, indicating pairing mode
  4. Connect to your 2.4GHz Wi-Fi by entering your network credentials.
  5. Name each outlet. The MSS620 has two independently controlled outlets, so give them descriptive names like "garden lights" and "fountain pump."

Key Features

  • IP44 weatherproof rating for outdoor use
  • Two independently controlled outlets
  • Works with Alexa, Google Home, and HomeKit (select models)
  • Sunrise/sunset scheduling based on your GPS location
  • 15A total capacity shared between outlets
  • Individual scheduling per outlet

HomeKit Setup for Supported Models

Some versions of the MSS620 include Apple HomeKit support. If yours does:

  • Open the Apple Home app and tap "+" to add a new accessory.
  • Scan the HomeKit code on the device label. Both outlets will appear as separate accessories in HomeKit.
  • You can set up HomeKit automations like turning on patio lights when you arrive home or shutting them off at a specific time.

Practical Outdoor Use Cases

  • Patio lighting: Run string lights on one outlet with a sunset-to-midnight schedule, and keep the other outlet free for a portable speaker or bug zapper.
  • Garden automation: Control a decorative fountain and garden spotlights on independent schedules. The sunrise/sunset feature adjusts automatically throughout the year.
  • Holiday displays: Put different sets of decorations on each outlet with different schedules. Yard inflatables can go off at bedtime while static light displays run later.

Outdoor Installation Tips

  • Even with IP44 protection, position the plug under an eave or outlet cover when possible to minimize direct rain exposure.
  • Keep total connected load under 15A across both outlets combined.
  • Run a test of the GFCI outlet before plugging in the Meross unit to confirm the safety circuit is working.

Troubleshooting

  • Outdoor Wi-Fi signal is weak: Exterior walls and distance from the router are the biggest culprits. Consider adding a mesh node indoors near the exterior wall, or an outdoor-rated access point for reliable coverage.
  • GFCI keeps tripping: Reduce the load on the circuit. Also check all connections for moisture intrusion, which can cause ground faults. Make sure the cord connections are tight and dry.
  • HomeKit pairing: Scan the HomeKit code printed on the device label. If scanning does not work, try entering the code manually. The code is also included in the packaging materials.
  • One outlet appears offline while the other works: Both outlets connect through a single Wi-Fi radio. If one is unresponsive, try toggling it in the app, or power cycle the entire unit by unplugging and re-plugging it.
  • Factory reset: Press and hold the button for 10 seconds until the LEDs flash in a different pattern. Both outlets will reset and you will need to set up from scratch.

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