Deta Grid Connect Smart Quad Gang Touch Light Switch - 6904HA - Teardown
Device Name: Deta Grid Connect Smart Quad Gang Touch Light Switch - 6904HA
Device Type: Light switch
Device Chip: WB3S - BK7231T
Device Purchased: Bunnings Warehouse - $73.58AUD
Flashing of Main Chip
Manually flashed the chip with BK7231 GUI Flash Tool.
WB3S Module Datasheet
Configuration of Module
Pins
P1 - WifiLED_n - If you want the White LED on when Wifi is connected
or WifiLED for White LED on when Wifi is disconnected
P6 - Button - Channel 3
P7 - Relay - Channel 3
P8 - Relay - Channel 2
P9 - Button - Channel 1
P10 - Button - Channel 4
P14 - Button - Channel 2
P24 - Relay - Channel 4
P26 - Relay - Channel 1
Button Layout on device - I did check it twice but let me know if I have it wrong.
Top Left - Channel 1
Bottom Left - Channel 2
Bottom Right - Channel 3
Top Right - Channel 4
Device Type: Light switch
Device Chip: WB3S - BK7231T
Device Purchased: Bunnings Warehouse - $73.58AUD
Flashing of Main Chip
Manually flashed the chip with BK7231 GUI Flash Tool.
WB3S Module Datasheet
Configuration of Module
Pins
P1 - WifiLED_n - If you want the White LED on when Wifi is connected
or WifiLED for White LED on when Wifi is disconnected
P6 - Button - Channel 3
P7 - Relay - Channel 3
P8 - Relay - Channel 2
P9 - Button - Channel 1
P10 - Button - Channel 4
P14 - Button - Channel 2
P24 - Relay - Channel 4
P26 - Relay - Channel 1
Button Layout on device - I did check it twice but let me know if I have it wrong.
Top Left - Channel 1
Bottom Left - Channel 2
Bottom Right - Channel 3
Top Right - Channel 4
wolfieeewolf wrote 92 posts with
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Been with us since 2023 year.
Comments
Thanks for submitting teardown. Very nice quadruple touch light switch. I saw similar ones using TuyaMCU, but that one is just WiFi module, that's good, that's more configurable than MCU version. At first... [Read more]
I used a 3D printed pogo pin jig to go over the top of the WB3S chip so that no soldering of wires was needed. I flashed a Deta 4 gang 6904HA series II and the pins are the same but I wanted the switch... [Read more]
Thank you for letting us know. We'll change the standard if it's required. It seems that HA likes to change things. [Read more]
BTW you may also be interested to know that this switch once flashed also works in Hubitat using the Tasmota Driver and App by Markus Liljergren (oh-lalabs). As does the series II Brilliant smart plug... [Read more]
Well, I wasn't even aware that there is such a system as Hubitat, but that basically is the whole point of our Tasmota JSON compatibility. OpenBeken emulates Tasmota features so it can use existing... [Read more]
It is an off shoot from Smartthings and uses Groovy. It is improving all the time. They have just released a new C-8 hub. I am so far having 100% success rate connecting OpenBeken flashed devices to... [Read more]
Any chance anyone has the stock firmware for this device? I lost my backup. [Read more]