Smart WiFi Surge Protector
  • The 3-Outlet and 2-USB port smart WiFi surge protector. Ideal for home and office use.
  • Turn outlet and USB port on/off from anywhere with your Meross app.
  • Works with Amazon Alexa, Google Assistant, Line Clova, SmartThings and IFTTT. 
  • Create and set on/off schedules as well as an auto-off timer routine for outlet and USB port to work automatically. 
  • Intelligent USB charging ports provide up to 3.1A power for dual ports.
  • Works with the WiFi you already have. No hub required.






                                   Hardware Features



90-125V~, 50/60Hz, 15.0A


90-125V~, 50/60Hz, 15.0A maximum load


5V ⎓ 2.1A for single USB port
5V ⎓ 3.1A for two USB ports


5V ⎓ 2.4A for single USB port
5V ⎓ 3.0A for two USB ports


3 x AC sockets

2 x USB ports*

* MSS425 US version's two USB ports can be controlled individually.

* MSS425 JP version's two USB ports work as a group.


1 x On/Off button

Press and hold for 5 seconds to initiate factory reset process



1 x Status LED

1 x Power LED



1 x Status LED

3 x Socket power LED

1 x USB power LED

Dimensions (W x D x H)   

US: 9.4 x 2.1 x 1.2 in. (excluding power cord)

JP: 23.2 x 4.5 x 3.0 cm (excluding power cord)

Power Cord 6 ft long
Antenna   One internal antenna

                                   Wireless Features


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 WiFi.          





JP: Telec, PS

UPC JP : 619317769656

US: 606015786122

Package Contents 1 x Smart WiFi surge protector

1 x User manual

System Requirements     Smartphone running iOS 9 or higher, Android 4.1 or higher

Existing Wi-Fi network


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




                                                  1. How many smart home devices can the Meross app control?

                                                  2. Can my Meross smart home devices be controlled by multiple phones?

                                                  3Do Meross smart home devices retain the selected settings if it encounters a power outage?

                                                  4Will the Schedule and Auto off feature still take effect if the Internet is down?

                                                  6What should I do if my smart home device time doesn't match the real time?

                                                  7How do I control Smart Devices by Amazon Echo/Dot/Tap with voice commands?

                                                  8How do I connect my Meross devices to Amazon Alexa?

                                                  9Why I didn't find my device on "Select a Device Page" in Meross app?

                                                  10Do my Meross smart devices support Campus, Hotel, Airport or Shopping Mall WiFi Hotspots?

                                                  11How do I connect my Meross devices to Google Assistant?

                                                  13After been successfully used for a while, my Amazon Alexa or Google Assistant is unable to control Meross devices.

                                                  14How to make my Meross devices work with IFTTT?

                                                  15. Do Meross devices work with my Fritz!Box?

                                                  16MerossデバイスをLINE Clovaに接続するにはどうすればいいですか?

                                                  41. How to make my Meross devices work with SmartThings app?