Meross 4AC 4USB Power Strip (MSS425F)
Meross 4AC 4USB

Available from:


Install method:
Replace module

GPIO #Component
GPIO00 None
GPIO01 LedLink
GPIO02 None
GPIO03 Button 1
GPIO04 Relay 2
GPIO05 Relay 1
GPIO09 None
GPIO10 None
GPIO12 Relay 3
GPIO13 Relay 4
GPIO14 Relay_i 5
GPIO15 None
GPIO16 None
GPIO17 None
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This device uses a Tasmota incompatible module which needs to be replaced with an ESP. Besides the module, this process will require a heat gun, soldering tools and moderate soldering skill.

You have to replace the existing MWA6S with a (previously programmed) ESP-02S or ESP8685-WROOM-03.

You need a size 2.0 triangle bit to open the case. The screws are under rubber stoppers, a fine screwdriver or needle pulls them out. In addition, the underside is clipped in.

Successfully opened you can remove the circuit board with the MWA6S on a breakout board.

MWA6S module on a breakout

The MWA6S is held in place with a drop of glue: remove, then desolder the part.

remove the glue

Solder in the ESP-02S and fix it again with glue. new ESP-02S