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Flashing EttroIT ESR3516/ESR3532 BK7231N CBU-IPEX: Pinout, UART, Firmware Info

lamero345 327 2
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  • #1 21777514
    lamero345
    Level 2  
    Name: EttroIT ESR3516/ESR3532

    URL: https://www.ettroit.com/prodotti.php?cat=DIFFERENZIALE WI-FI&serie_corrente=Magnetotermico#

    Module: BK7231N - CBU-IPEX

    Photos:

    Smart circuit breaker with Wi-Fi module and external antenna CBUI-PEX wireless module on green PCB with attached antenna cable

    Connection: https://developer.tuya.com/en/docs/iot/cbuipex-module-datasheet?id=Kaedsyurckrhu

    You can access CBU by removing rivets with a drill.
    Attachments:
    • readResult_BK7231N_QIO_2025-10-12-18-07-52.bin (2 MB) You must be logged in to download this attachment.
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  • Helpful post
    #2 21777539
    divadiow
    Level 38  
    boot log from dump w/TuyaMCU emulation using product key 1bnccnulaqx6xerl from dump

    Code: Text
    Log in, to see the code


    dpIDs/schema
    Code: JSON
    Log in, to see the code


    Code: JSON
    Log in, to see the code


    App screen showing R3_WIFI3 smart switch turned off and lock options disabled
  • #3 21790732
    p.kaczmarek2
    Moderator Smart Home
    Extra device photos:
    Residual current circuit breaker with Wi-Fi and test buttonWi-Fi differential circuit breaker with technical label and connectors
    productRef:ME87393292
    mmId:602444120926
    manufacturerSKU:ESR3516
    ean:8053782741557
    Helpful post? Buy me a coffee.
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