The MSS550 is a smart Wi-Fi 3-way wall switch. For most of the competitive smart 3-way switches in the market, customer needs to replace both regular 3-way switches. While with Meross MSS550, customer only need to replace on...

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Product Review

The MSS550 is a smart Wi-Fi 3-way wall switch. For most of the competitive smart 3-way switches in the market, customer needs to replace both regular 3-way switches. While with Meross MSS550, customer only need to replace one to make the whole system be smart. It is a low cost solution.
MSS550 can be controlled from anywhere with your Meross app (iOS, Android). It allows you to turn the connected lights on and off and to set schedules or auto-off timer routine around your daily needs. Additionally, after pairing with Amazon Alexa or Google Assistant, users can simply control the connected devices with voice commands.

MSS550 complies with US/CA wall switch regulations and can seamlessly replace your conventional wall switches. Moreover, with the clearly designed setup wizard in Meross app, the wiring process has never been easier.

Finally, MSS550 operates using Wi-Fi. You can simply connect it to your existing home Wi-Fi without the need to purchase an extra hub.

Note: Neutral wire is required for the installation.
Hardware Features
Input: 100-125V~, 50/60Hz, 15.0A
Output: 100-125V~, 50/60Hz
Button: On/Off Button
Dimensions ( W x D x H )
4.1 x 1.8 x1.4 in. (without faceplate)
4.7 x 2.8 x1.4 in. (with faceplate)
Wireless Standards: IEEE 802.11 b/g/n, 2.4GHz, 1T1R
*Does not support Enterprise WiFi.
Certification: FCC, ETL
Package Contents
Smart Wi-Fi 3-Way Wall Switch
Quick Installation Guide
System Requirements
iOS 9 or higher, Android 4.1 or higher


  • Easy to Install: Neutral wire is required, standard wall plate size. The Meross app guides you through easy step by step installation. Note: this smart light switch is only for non-dimmable lights, 2.4GHz Wi-Fi network support only.
  • Single Pole or 3-Way: Replace your traditional 3-way switch with meross 3-way smart switch or use 2 meross 3-way light switches to control the light from 2 locations, such as the top and bottom of a staircase or from house to garage etc. Meross light switch fits for your existing 1/2/3/4 gang standard size Decora/GFCI faceplate.
  • Voice Control: The smart WiFi light switch works with Alexa and Google Assistant, enjoy the hands-free convenience of controlling the lights in your home with simple voice commands.
  • Control from Anywhere: Whether you're at home or away, turn the light on or off and monitor your light status from your smartphone or tablet with the free Meross app.
  • Schedule and Timer: Create schedule, timer or countdown to turn on/off your light automatically based on your routines. Besides, we provide a worry-free 12-month warranty, and friendly customer service.

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