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OpenBeken config for Moes WM-104B-M-LT-MS (AKA: WM4LT2) CB2S BK7231N

SukkoPera 531 6
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  • OpenBeken config and flashing notes for Moes WM4LT2

    #1 21900388
    SukkoPera
    Level 2  
    Posts: 4
    Hi,

    I have just got OpenBeken running on this Moes module. It's a bit weird since the box says model is WM-104B-M-LT-MS but then the module itself says WM4LT2.

    It's quite cheap and it uses a CB2S board (BK7231N).

    Here is the config:

    {
      "vendor": "Moeas",
      "bDetailed": "0",
      "name": "MiNi Smart Switch Module",
      "model": "WM-104B-M-LT-MS",
      "chip": "BK7231N",
      "board": "TODO",
      "flags": "1024",
      "keywords": [
        "TODO",
        "TODO",
        "TODO"
      ],
      "pins": {
        "6": "Rel;2",
        "7": "LED;1",
        "8": "Rel;1",
        "11": "Btn;10",
        "24": "dInput_n;2",
        "26": "dInput_n;1"
      },
      "command": "",
      "image": "https://obrazki.elektroda.pl/YOUR_IMAGE.jpg",
      "wiki": "https://www.elektroda.com/rtvforum/topic_YOUR_TOPIC.html"
    }


    Flashing is not the easiest: I had to desolder the CB2S module, which in turn required desoldering the terminal strip. I think this is due to the TX line being used for the button.

    Hope it helps, let me know if you need anything more!

    OpenBeken config for Moes WM-104B-M-LT-MS (AKA: WM4LT2) CB2S BK7231N0dfcdd79-f...11c5~1.jpg (718.09 kB)You must be logged in to download this attachment.
    OpenBeken config for Moes WM-104B-M-LT-MS (AKA: WM4LT2) CB2S BK7231N856ca40d-2...ecb6~1.jpg (915.04 kB)You must be logged in to download this attachment.
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  • #3 21901282
    SukkoPera
    Level 2  
    Posts: 4
    No, unfortunately I didn't dump it. If I buy more, I will definitely try!
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  • #4 21910421
    p.kaczmarek2
    Moderator Smart Home
    Posts: 14795
    Help: 659
    Rate: 12944
    Hey, any news, have you tried with more pieces?

    Btw don't forget PowerSave on such devices, otherwise you'll be soon doing this repair:
    https://www.elektroda.com/rtvforum/topic3898805.html
    Helpful post? Buy me a coffee.
  • #5 21910837
    SukkoPera
    Level 2  
    Posts: 4
    Not yet, I've been busy travelling this month!

    Actually I haven't installed this device yet, but thanks for the tip!
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  • #6 21933845
    SukkoPera
    Level 2  
    Posts: 4
    Hi, I have finally bought another one of these. Can you please tell me how to dump the original firmware?
  • #7 21933861
    p.kaczmarek2
    Moderator Smart Home
    Posts: 14795
    Help: 659
    Rate: 12944
    Well, the same you flash, just use "Backup firmware" option here:
    https://github.com/openshwprojects/BK7231GUIFlashTool
    Helpful post? Buy me a coffee.

Topic summary

LABEL_AI_GENERATED
OpenBeken configuration was created for a Moes mini smart switch module identified on the box as WM-104B-M-LT-MS and on the PCB/module as WM4LT2. The device uses a CB2S module with BK7231N, and a draft JSON pin mapping was shared for relays, LED, button, and digital inputs. A link to the OpenBeken webapp pull request was provided, and the original Tuya firmware dump was requested for inclusion in the firmware collection. Later discussion noted that PowerSave should be enabled on this type of device to avoid hardware damage, and the author had not yet installed or tested additional units.
AI summary based on the discussion. May contain errors.
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