Elektroda.com
Elektroda.com
X
Elektroda.com

Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK

btsimonh 876 1
  • Presenting a Calex Holland "Smart Power Plug UK" bought from Tesco for £8 (clubcard discounted).
    Article number is 900011.1
    Board is marked WE-08(10)V1.1 2020.4.13
    Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK

    Opening:
    I worked slowly around the edge with a craft knife. There was audible cracking as I did so.
    Once open, it was obvious that there were no clips to break, it's only held by glue.

    Content:
    It seems a simple power socket with no power monitoring (although I can't see the back of the PCB).
    A WB2S controls a relay, and it has two LEDs and a push button.

    NOTE: the RX and TX highlighted are not the flashing pins, only the logging pins.
    RX1 and TX1 are only accessible from under the board - new larger soldering iron has been ordered.



    I will edit this post once firmware is dumped and it's flashed with OpenBeken.

    Bootlog attached.
    Firmware dump attached.

    Pins:
    BTN - PWM0 - pin 6
    LED_n - PWM1 - pin 7
    LED_n - PWM2 - pin 8
    Relay - PWM4 - pin 24


    Have now removed the board itself from the plug (see below for back image).
    Don't buy a cheap soldering iron on Amazon - it did complete this one job, but broke on the last cleanup :( :
    Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK


    Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK
    Calex Smart Power Plug (WB2S) 900011.1 - Tesco UK

    Cool? Ranking DIY
    About Author
    btsimonh
    Level 11  
    Offline 
    btsimonh wrote 63 posts with rating 9, helped 1 times. Been with us since 2022 year.
  • #2
    p.kaczmarek2
    Level 28  
    If the device is not easily openable, then the Tuya-cloudcutter is the way to go. Doing tuya-cloudcutter support for T chips is easier, and I see you have one there. Just sacrifice one device to get full 2MB flash dump after pairing and then try using haxomatic to get offsets. That way you won't have to open the next devices from the same series. Full article on doing DIY cloudcutter support is coming soon.