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Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown

wolfieeewolf 2484 9
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  • Device Name: Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA
    Device Type: Light switch
    Device Chip: WB3S - BK7231T
    Device Purchased: Bunnings Warehouse - $56.63AUD

    Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown


    Flashing of Main Chip

    Manually flashed the chip with BK7231 GUI Flash Tool.

    WB3S Module Datasheet


    Configuration of Module

    Pins

    P6 - Relay - Channel 1
    P9 - WifiLED_n - If you want the White LED on when Wifi is connected
    or WifiLED for White LED on when Wifi is disconnected
    P14 - Button - Channel 1

    Cool? Ranking DIY
    About Author
    wolfieeewolf
    Level 11  
    Offline 
    wolfieeewolf wrote 92 posts with rating 18, helped 6 times. Been with us since 2023 year.
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  • #2 20475670
    p.kaczmarek2
    Moderator Smart Home  
    Very nice and simple device. Does it have also a LED linked to relay? It should be possible to disconnect that LED and use a free GPIO of WB3S to control that, if required.

    I can also see a BS813A IC, which a touch button controller in SOIC-8 case, made by Holtek.
    Deta Grid Connect Smart Single Gang Touch Light Switch - 6911HA - Teardown
    Helpful post? Buy me a coffee.
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  • #3 20476993
    wolfieeewolf
    Level 11  
    Yeah, the button has a blue led light on the board. You can see it (LED 2) just in the middle of the TPM button. It turns on when the relay is powered so maybe there could be a way to disconnect it from the relay.

    I'm sure there are some that don't like the LED but it is not overly bright and looks nice so not really a big issue for me. Makes a nice little night light. The WIFI light (LED 4) is more of an issue for me. I just turn it off as it is very bright and looks horrible on the black cover plates.

    It's a very nice light switch but it does require a neutral wire which can make it difficult to install. The original firmware was horrible. Apparently, it has a hard time with dual-band modems. It would always disconnect randomly or have to be resynced with the app at least once a week. I haven't had to do any of that with the OpenBK firmware. Once it's set up it works well with Home Assistance.
  • #4 20477001
    p.kaczmarek2
    Moderator Smart Home  
    Nice, btw, consider adding "PowerSave 1" to startup and report to me if it works well. This will reduce heating, electricity consumption and even might prolong life of cheap power supply inside the switch.

    Regarding your other device - I will try to look into it today.
    Helpful post? Buy me a coffee.
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  • #5 20477003
    wolfieeewolf
    Level 11  
    Will give it a go and report back when I can.

    No rush on the other device. Kinda having a break from it as it was annoying me I couldn't work it out.
  • #6 20477005
    p.kaczmarek2
    Moderator Smart Home  
    I would do that other device for you very quickly, the only problem is that it is hard to do fully remotely when I don't have it in front of me. I will give it another try soon. I could also get the same device from donation funds and just do the config for that myself, but it's an AU device, right? It would be hard to buy one in Poland....
    Helpful post? Buy me a coffee.
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  • #7 20513925
    kaldek
    Level 4  
    I have just flashed a number of these around my house. The WiFi LED behaviour I like is that the LED is on if the WiFi is working. Ergo, it needs WiFiLED_n for that to be the case. I note that other users have posted guides for the two and four-gang units and those are listed as WiFiLED_n.
  • #8 20515270
    wolfieeewolf
    Level 11  
    kaldek wrote:
    I have just flashed a number of these around my house. The WiFi LED behaviour I like is that the LED is on if the WiFi is working. Ergo, it needs WiFiLED_n for that to be the case.


    Guess it depends on what you like. I have it so that the light comes on when the WiFi is not connected. Makes it easy to see what switches have failed. I'm not a huge fan of the bright white LED does make for a good little night light but where I have my switches it shines right in your face of a night time and is kinda annoying. Each to their own though. Will update the original post to include both options depending on preference

    Quote:
    I note that other users have posted guides for the two and four-gang units and those are listed as WiFiLED_n.


    Hahaha, some of those posts are probably mine. Will update those as well to reflect the difference between each option
  • #9 20515295
    kaldek
    Level 4  
    Maybe I've just had these running Tuya for too long and I'm used to the default LED behaviour.
  • #10 20815715
    wolfieeewolf
    Level 11  
    I had a spare one of these laying around so decided to dump to stockfirmware should anyone want it.

    readResult...-22-20.bin Download (2 MB)

    Would be interesting to see if you could turn off the blue ring leds.


    Heres the JSON for it

    Code: text Expand Select all Copy to clipboard
    {
	"rl1_lv":"1",
	"netled_lv":"0",
	"bt_type":"1",
	"bt1_pin":"14",
	"mxcl_led_m":"0",
	"rand_dpid":"18",
	"net_trig":"2",
	"led_dp":"15",
	"jv":"1.3.3",
	"backlit_select":"0",
	"nety_led":"1",
	"md":"0",
	"random":"0",
	"wfb64":"1",
	"stat":"0",
	"token":"null",
	"region":"null",
	"reg_key":"null",
	"dns_prio":"00{uuid",
	"psk_key":"TwqLSDF5DJXGne8hBOqU7FcaTDTi8VK94PWDq",
	"auth_key":"2USZ01b7A5Epalp2kGXqIa5fERkZwUmJ",
	"ap_ssid":"GRID",
	"ap_passwd":"null",
	"country_code":"CN",
	"bt_mac":"null",
	"bt_hid":"null",
	"prod_test":"false }etled_pin",
	"total_stat":"2",
	"bt1_lv":"0",
	"reset_t":"5",
	"ch_flag1":"1",
	"inch_dp":"19",
	"module":"WB3S",
	"dctrl_select":"0",
	"ch_cddpid1":"7",
	"init_conf":"14",
	"backlit_dp":"16",
	"cyc_dpid":"17",
	"ch_num":"1",
	"reuse_led_m":"0",
	"rl1_pin":"6",
	"netn_led":"0",
	"ch_dpid1":"1",
	"crc":"53",
	"}{Bgw_di{abi":"0",
	"id":"null",
	"swv":"1.0.7",
	"bv":"40.00",
	"pv":"2.2",
	"lpv":"3.3",
	"pk":"key7axydcvmea3x9",
	"firmk":"key7axydcvmea3x9",
	"cadv":"1.0.2",
	"cdv":"1.0.0",
	"dev_swv":"1.0.7",
	"s_id":"null",
	"dtp":"0",
	"sync":"0",
	"attr_num":"0",
	"mst_tp_0":"0",
	"mst_ver_0":"null",
	"mst_tp_1":"0",
	"mst_ver_1":"null",
	"mst_tp_2":"0",
	"mst_ver_2":"null",
	"mst_tp_3":"0",
	"mst_ver_3":"null",
	"dminfo_name":"null",
	"dminfo_code":"null",
	"dminfo_report_code":"null",
	"dminfo_sn":"null }{nc_tp",
	"ssid":"null",
	"passwd":"null",
	"lckey":"null",
	"h_url":"null",
	"h_ip":"null",
	"hs_url":"null",
	"hs_ip":"null",
	"hs_psk":"null",
	"hs_psk_ip":"null",
	"mqs_url":"null",
	"mqs_ip":"null",
	"mq_url":"null",
	"mq_ip":"null",
	"ai_sp":"null",
	"mq_psk":"null",
	"mq_psk_ip":"null",
	"time_z":"null",
	"s_time_z":"null",
	"wx_app_id":"null",
	"wx_uuid":"null",
	"dy_tls_m":"0",
	"cloud_cap":"0 }H4Bgw_bisP;Buser_param_keyLSDF5DJXGne8hBOqU7FcaTDTi8VK94PWDq",
	"ap_s{rl1_lv":"1",
	"n)Bgw_wsm{nc_tp":"0",
	"n)4Bgw_wsm{nc_tp":"0"
}
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Topic summary

The discussion revolves around the Deta Grid Connect Smart Single Gang Touch Light Switch (model 6911HA), which features a WB3S - BK7231T chip. Users share experiences regarding the device's LED behavior, noting that the blue LED linked to the relay can be modified, and the WiFi LED can be adjusted for brightness. The original firmware was criticized for connectivity issues, particularly with dual-band routers, but users report improved performance after flashing the device with OpenBK firmware. Suggestions for configuration, such as adding "PowerSave 1" to reduce power consumption, are also discussed. Users express varying preferences for LED functionality, with some finding the bright WiFi LED bothersome. JSON configurations for the device are shared, indicating options for LED control.
Summary generated by the language model.
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