Smart Wi-Fi 3-Way Switch
MSS550 US
  • Replace one dumb 3-way switch to make the whole system smart.
  • Turn lights on/off from anywhere anytime with Meross app.
  • Works with Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings.
  • Create on/off schedules or auto-off timers to work automatically.
  • LED indicator helps find the switch easily even at night.
  • Works with the Wi-Fi you already have. No hub required.
  • Neutral wire (white wire) required. Works with 2.4GHz Wi-Fi only.
  • Apple HomeKit website listed.
HomeKit Version:
Non-HomeKit Version:
SPECS
Input
  • 90-125V~, 50/60Hz
Output
  • 90-125V~, 50/60Hz
  • 200W max. for INC
  • 150W max. for CFL&LED
Button
  • 1 x On/Off button
  • Press and hold for 5 seconds to initiate factory reset process
LED
  • 1 x Status LED
Dimensions ( W x D x H )
  • 4.1 x 1.7 x 1.5 in. (without faceplate)
  • 4.7 x 2.8 x 1.5 in. (with faceplate)
Antenna
  • One internal antenna
Wireless Standards
  • IEEE 802.11 b/g/n, 2.4GHz, 1T1R
Wireless Security
  • Support 64/128 bit WEP, WPA-PSK/WPA2-PSK
  • *Does not support Enterprise Wi-Fi.
Certifications
  • FCC, IC, ETL
Package Contents
  • 1 x Smart Wi-Fi 3 way wall switch
  • 2 x Screw
  • 1 x User manual
System Requirements
  • Smartphone running iOS 9* or later, Android 4.1 or later
  • Existing Wi-Fi network
  • *HomeKit version requires iOS 13.0 or later.
Environment
  • Operating Temperature: 0°C~40°C (32°F~104°F)
  • Storage Temperature: -40°C~70°C (-40°F~158°F)
  • Operating Humidity: 10%~90% non-condensing
  • Storage Humidity: 5%~90% non-condensing
FAQS
Can Meross smart 3 way switch be used in a 4 way circuit system?

Yes. But you have to install Meross 3 way switch in certain electrical box of a 4 way circuit system (Non-dimmer). A 4 way circuit system contains two 3 way switches and a 4 way switch. You can replace either of the 3 way switches with it as picture below.

Learn More
DOWNLOAD
Manual
UG_MSS550(US)_2104_EN
Manual
UG_General-Purpose Homekit user manual