I flashed WHDZ03 Smart Plug with Energy Monitoring BK7231N using cloudcutter. Managed to configure PINs for energy monitoring and button toggle. I cannot get to turn on the Blue LED for button toggle. Do I need to assign a PIN for LED (WifiLed is working)? The LED worked with Tuya App.

Name: WHDZ03 Smart Plug with Energy Monitoring BK7231N - Need help configuring
Uploaded: 2024-02-05T07:32:02+01:00
Description: I flashed WHDZ03 Smart Plug with Energy Monitoring BK7231N using cloudcutter. Managed to configure PINs for energy monitoring and button toggle. I cannot get to turn on the Blue LED for button toggle. Do I need to assign a PIN for LED (WifiLed is working)? The LED worked with Tuya App.

I've just opened a WHDZ03 using a G-clamp to crack the glue apart without destroying anything. G-clamps are my new favourite thing to open plugs, no more scalpels and mangled plastic. Once open you can desolder the neutral and live pegs to free the PCB from the mains pins. You can then free the CB2S from the main board. I attach a factory fw dump and the uart boot log from my efforts this evening. Easyflasher detects these assignments Code: text Expand Select all Copy to clipboard - BL0937 SEL on P24 - Button (channel 1) on P11 - BL0937 VI on P6 - WiFi LED on P8 - BL0937 ELE on P7 - Relay (channel 1) on P26 But instead of WiFi LED on P8 I prefer LED_n on P8 (Channel 1) otherwise the LED just flashes blue regardless of relay state. At least with LED_n there's no LED when it's off and a solid blue LED when on. Sadly no red LED on this device. Code: JSONLog in, to see the code Here is undamaged device after dismantling and flashing. This has the same GPIOs

Try configure pin 8 as WifiLED_N

@jkwim , do your device has two separate controllable LEDs or do you just want to remove WiFiLED role and just use LED for that? WiFiLED_n (or without _n) is a WiFi status indicator LED (or LED_n) is a diode that follows the channel value like a relay, so it shows whether relay is on or off (can be swapped) Some devices might have just single diode available so you have to choose which role you want.

I was playing with it. Pin 8 = LED Channel 1 Works as expected: Blue when relay is OFF. Dark when Relay is ON. If I recall properly there was a light blue in one state with Tuya FW. I was also playing with Pin 10. At one point I saw the light blue status but could not reproduce again. Nevertheless, is it possible to change the pin role on the fly via a script? Say: 1. On boot up Pin8=WiFiLED 2. Once WiFi is up Pin8=LED Channel 1 3. If WiFi is lost Pin8=WiFiLED Also second question: How to control brightness of LED via command or script?

It is possible to change the pin role on the fly. You could also catch a WiFi event, although I am not sure if WiFi events are already added. Still, your idea seems very useable, maybe I will just add a special pin role? Something like.... i don't know how to call it. WiFiAndPowerLED ? It has to be on the PWM pin. We don't have software PWM yet.

There is a MQTTState right? Smilarly if a WiFiState can be added Added after 3 [minutes]: WiFiAndLED Then the LED can be controlled for other purposes also by changing the channel right? If Channel is same as of Relay, then it will act as a Power LED. Otherwise it can be decoupled as any other output LED by changing in to a different channel.

I have the same plug model, here are som internal picture of the plug

Great and Thank You! So that confirms my guess also that there might be a CB2S module inside. Based on all discoveries, looks like these are similar plugs in terms of WiFi module: 1. WHDZ03 (C2BS BK7231N + BL0937) 2. BSD48 (C2BS BK7231N + BL0937) LSPA7 which looks similar is different: LSPA7 (WB2S BK7231T + BL0937) @p.kaczmarek2 Would it be possible to create a sticky post with these kind of summary notes? I know database has everything but when shopping a new device these summaries will help to pick the correct device (In the past I have returned LSPA7 devices because Tuya app did not show Energy Monitoring option. I did not know about OpenBK at that time. Probably the BL0937 was in there but for some reason the app did not pick it up)

Hello, what kind of sticky topic would you want?

Hi all Any idea if these plugs will flash with the Tuya over-the-air converter software? I can see from the post that you managed to take the plug apart (I have no idea how you managed that, as far as I can see it is incredibly well sealed). Any info welcome, and just hoping these are not plugs where the chipset has been swapped and not documented...!Kind Regards

I think the following sentence means that he has flashed it over the air, by using tuya-cloudcutter:

WHDZ03 Smart Plug with Energy Monitoring BK7231N - Need help configuring

jkwim 8649 53

Best answers

How do I configure the blue LED on a WHDZ03 BK7231N smart plug so it turns on/off with the relay instead of only acting as a Wi‑Fi status light?

Configure P8 as `LED_n` (or `LED` on channel 1) if you want the blue LED to follow the relay state; `WiFiLED`/`WiFiLED_n` is only for Wi‑Fi status [#20345657][#20945446] If your plug has only one controllable LED, you have to choose between Wi‑Fi indication and power indication unless you switch the role dynamically [#20345657] The thread confirms that P8 as `LED Channel 1` works as expected: blue when the relay is OFF and dark when it is ON, and that `WiFi LED on P8` makes it flash during Wi‑Fi connection but not track relay state [#20346072][#20945566] A script/autoexec can change the LED behavior on the fly, and an example for this kind of dynamic LED control is referenced in the OpenBK autoexec examples [#20347246][#20945522]

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#1 20345445 20 Dec 2022 23:59

jkwim jkwim

Level 13

Topic author

Post #1
20345445 20 Dec 2022 23:59

I flashed WHDZ03 Smart Plug with Energy Monitoring BK7231N using cloudcutter.

Managed to configure PINs for energy monitoring and button toggle.

I cannot get to turn on the Blue LED for button toggle.

Do I need to assign a PIN for LED (WifiLed is working)?

The LED worked with Tuya App.

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#2 20345578 21 Dec 2022 08:08

ferbulous ferbulous

Level 18

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Post #2
20345578 21 Dec 2022 08:08

Try configure pin 8 as WifiLED_N
#3 20345657 21 Dec 2022 09:28

p.kaczmarek2 p.kaczmarek2

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Post #3
20345657 21 Dec 2022 09:28

@jkwim , do your device has two separate controllable LEDs or do you just want to remove WiFiLED role and just use LED for that?

WiFiLED_n (or without _n) is a WiFi status indicator
LED (or LED_n) is a diode that follows the channel value like a relay, so it shows whether relay is on or off (can be swapped)

Some devices might have just single diode available so you have to choose which role you want.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#4 20346072 21 Dec 2022 14:19

jkwim jkwim

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Post #4
20346072 21 Dec 2022 14:19

I was playing with it.

Pin 8 = LED Channel 1

Works as expected: Blue when relay is OFF. Dark when Relay is ON.

If I recall properly there was a light blue in one state with Tuya FW.

I was also playing with Pin 10.

At one point I saw the light blue status but could not reproduce again.

Nevertheless, is it possible to change the pin role on the fly via a script?

Say:
1. On boot up Pin8=WiFiLED
2. Once WiFi is up Pin8=LED Channel 1
3. If WiFi is lost Pin8=WiFiLED

Also second question:
How to control brightness of LED via command or script?
#5 20347246 22 Dec 2022 10:21

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #5
20347246 22 Dec 2022 10:21

It is possible to change the pin role on the fly. You could also catch a WiFi event, although I am not sure if WiFi events are already added.

Still, your idea seems very useable, maybe I will just add a special pin role? Something like.... i don't know how to call it. WiFiAndPowerLED ?

Quote:

How to control brightness of LED via command or script?

It has to be on the PWM pin. We don't have software PWM yet.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
#6 20347844 22 Dec 2022 16:58

jkwim jkwim

Level 13

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Post #6
20347844 22 Dec 2022 16:58

p.kaczmarek2 wrote:
It is possible to change the pin role on the fly. You could also catch a WiFi event, although I am not sure if WiFi events are already added.

There is a MQTTState right?

Smilarly if a WiFiState can be added

Added after 3 [minutes]:

p.kaczmarek2 wrote:

Still, your idea seems very useable, maybe I will just add a special pin role? Something like.... i don't know how to call it. WiFiAndPowerLED ?

WiFiAndLED
Then the LED can be controlled for other purposes also by changing the channel right?

If Channel is same as of Relay, then it will act as a Power LED. Otherwise it can be decoupled as any other output LED by changing in to a different channel.
#7 20424263 05 Feb 2023 21:34

Zain00 Zain00

Level 11

Helpful post? (+1)

Post #7
20424263 05 Feb 2023 21:34

I have the same plug model, here are som internal picture of the plug
#8 20426376 07 Feb 2023 07:46

jkwim jkwim

Level 13

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Post #8
20426376 07 Feb 2023 07:46

Zain00 wrote:
I have the same plug model, here are som internal picture of the plug

Great and Thank You!

So that confirms my guess also that there might be a CB2S module inside.

Based on all discoveries, looks like these are similar plugs in terms of WiFi module:

1. WHDZ03 (C2BS BK7231N + BL0937)
2. BSD48 (C2BS BK7231N + BL0937)

LSPA7 which looks similar is different:
https://www.elektroda.com/rtvforum/topic3932742.html#20422032

LSPA7 (WB2S BK7231T + BL0937)

@p.kaczmarek2
Would it be possible to create a sticky post with these kind of summary notes?

I know database has everything but when shopping a new device these summaries will help to pick the correct device (In the past I have returned LSPA7 devices because Tuya app did not show Energy Monitoring option. I did not know about OpenBK at that time. Probably the BL0937 was in there but for some reason the app did not pick it up)
#9 20426508 07 Feb 2023 09:30

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

Helpful post? (+1)

Post #9
20426508 07 Feb 2023 09:30

Hello, what kind of sticky topic would you want?

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
#10 20522791 03 Apr 2023 13:44

ruffmonkey ruffmonkey

Level 1

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Post #10
20522791 03 Apr 2023 13:44

Hi all

Any idea if these plugs will flash with the Tuya over-the-air converter software?

I can see from the post that you managed to take the plug apart (I have no idea how you managed that, as far as I can see it is incredibly well sealed).

Any info welcome, and just hoping these are not plugs where the chipset has been swapped and not documented...!

Kind Regards
#11 20522954 03 Apr 2023 15:38

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #11
20522954 03 Apr 2023 15:38

I think the following sentence means that he has flashed it over the air, by using tuya-cloudcutter:
jkwim wrote:
I flashed WHDZ03 Smart Plug with Energy Monitoring BK7231N using cloudcutter.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
#12 20637210 01 Jul 2023 06:30

hakimmuhiddin hakimmuhiddin

Level 4

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Post #12
20637210 01 Jul 2023 06:30

Hi all,

I'm having an issue. The power shows some reading, but the voltage and current remain 0.

Do you have any idea what might be the possible reason? My model is WHD09, but very close to this forum picture.
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#13 20815945 15 Nov 2023 18:40

beniamino38 beniamino38

Level 6
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Post #13
20815945 15 Nov 2023 18:40

>>20345445

jkwim: Could you share the profile you used with cloudcutter for the WHDZ03? I bought some of these which appear to be on firmware 1.1.17, and I couldn't find a working profile for them.

Added after 8 [hours] 15 [minutes]:

I took one apart (destructively) and dumped the flash. Unfortunately:

Code: text Expand Select all Copy to clipboard
[+] Matched pattern for BK7231N version SDK 2.3.3 LAN 3.4/CAD 1.0.5, payload type ssid [!] The binary supplied appears to be patched and no longer vulnerable to the tuya-cloudcutter exploit.

These particular plugs are very solidly glued together -- I can't see a way to open them for flashing without destroying them. So I would recommend others avoid this device.
Helpful post

#14 20945446 04 Feb 2024 23:30

divadiow divadiow

Level 38
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Post #14
20945446 04 Feb 2024 23:30

beniamino38 wrote:
These particular plugs are very solidly glued together -- I can't see a way to open them for flashing without destroying them. So I would recommend others avoid this device.

I've just opened a WHDZ03 using a G-clamp to crack the glue apart without destroying anything. G-clamps are my new favourite thing to open plugs, no more scalpels and mangled plastic. Once open you can desolder the neutral and live pegs to free the PCB from the mains pins. You can then free the CB2S from the main board.

I attach a factory fw dump and the uart boot log from my efforts this evening.

Easyflasher detects these assignments

Code: text Expand Select all Copy to clipboard
- BL0937 SEL on P24 - Button (channel 1) on P11 - BL0937 VI on P6 - WiFi LED on P8 - BL0937 ELE on P7 - Relay (channel 1) on P26

But instead of "WiFi LED on P8" I prefer LED_n on P8 (Channel 1) otherwise the LED just flashes blue regardless of relay state. At least with LED_n there's no LED when it's off and a solid blue LED when on. Sadly no red LED on this device.

Code: JSON
Log in, to see the code

Here is undamaged device after dismantling and flashing.

This has the same GPIOs https://www.elektroda.com/rtvforum/topic3979012.html

Attachments:

readResult_BK7231N_QIO_2024-04-2-20-45-10.bin (2 MB) You must be logged in to download this attachment.

boot.txt (12.96 KB) You must be logged in to download this attachment.
#15 20945451 04 Feb 2024 23:32

divadiow divadiow

Level 38

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Post #15
20945451 04 Feb 2024 23:32

p.kaczmarek2 wrote:
Still, your idea seems very useable, maybe I will just add a special pin role? Something like.... i don't know how to call it. WiFiAndPowerLED ?

this would be cool
#16 20945522 05 Feb 2024 05:10

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #16
20945522 05 Feb 2024 05:10

I think we have here an example of LED acting in the way you described through a script:
https://github.com/openshwprojects/OpenBK7231T_App/blob/main/docs/autoexecExamples.md

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
#17 20945566 05 Feb 2024 07:32

divadiow divadiow

Level 38

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Post #17
20945566 05 Feb 2024 07:32

divadiow wrote:
otherwise the LED just flashes blue regardless of relay state

slight correction, I was listing experience with it in AP mode, I hadn't actually joined it to wifi. With "WiFi LED on P8" default it *does* flash blue before going solid blue after connection but then remains solid blue in any relay state.

With that script, it behaves perfectly. Autoexec for this model

Code: Text
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#18 20946334 05 Feb 2024 16:17

jkwim jkwim

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Post #18
20946334 05 Feb 2024 16:17

I bought a couple of these again recently and found out that they have patched Tuya firmware.

I tried using a C-Clamp to open but I applied to much force in one location and unfortunately the WiFi PCB got broken.

Haven't worked on the others yet.
#19 20946419 05 Feb 2024 17:06

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #19
20946419 05 Feb 2024 17:06

How the damage to PCB looks like? Maybe it's recoverable?

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
#20 20955554 11 Feb 2024 10:30

divadiow divadiow

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Post #20
20955554 11 Feb 2024 10:30

>>20946334

Let's have a look!
#21 20955897 11 Feb 2024 13:14

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #21
20955897 11 Feb 2024 13:14

I've did a pad regeneration tutorial once, but it's not yet translated. I will update com link later, currently it yields 404 error:
https://www.elektroda.pl/rtvforum/topic3965446.html
https://www.elektroda.com/rtvforum/topic3965446.html

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
#22 20956333 11 Feb 2024 16:20

jkwim jkwim

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Post #22
20956333 11 Feb 2024 16:20

divadiow wrote:
>>20946334

Let's have a look!

Sure! I would definitely want to. It is just that I was getting busier with a different device.
#23 20981110 27 Feb 2024 16:16

Advian1 Advian1

Level 7

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Post #23
20981110 27 Feb 2024 16:16

jkwim wrote:
I flashed WHDZ03 Smart Plug with Energy Monitoring BK7231N using cloudcutter.

Just received one of these.

What was your firmware version?
Mine is 1.1.17
I see it on the cloudcutter, but the device name suggests temp/humidity sensor.

not sure if I should proceed?

what is the way to disassemble it safely?
#24 20981479 27 Feb 2024 19:18

jkwim jkwim

Level 13

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Post #24
20981479 27 Feb 2024 19:18

Advian1 wrote:

What was your firmware version?
Mine is 1.1.17

This firmware is patched so cloudcutter cannot be used

https://github.com/tuya-cloudcutter/tuya-cloudcutter/wiki/Known-Patched-Firmware

So opening is the only way out.
#25 20981543 27 Feb 2024 19:46

Advian1 Advian1

Level 7

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Post #25
20981543 27 Feb 2024 19:46

jkwim wrote:

This firmware is patched so cloudcutter cannot be used

https://github.com/tuya-cloudcutter/tuya-cloudcutter/wiki/Known-Patched-Firmware

So opening is the only way out.

thanks.
Any help on how I can open it without destroying the case?

@divadiow can you please help? how I can open the device safely?
#26 20981628 27 Feb 2024 20:29

divadiow divadiow

Level 38

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Post #26
20981628 27 Feb 2024 20:29

divadiow wrote:
I've just opened a WHDZ03 using a G-clamp to crack the glue apart without destroying anything. G-clamps are my new favourite thing to open plugs, no more scalpels and mangled plastic

G or F clamps. slow and steady at different angles. Like this https://www.youtube.com/watch?v=AK7Aibrhzbs
#27 20981655 27 Feb 2024 20:45

Advian1 Advian1

Level 7

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Post #27
20981655 27 Feb 2024 20:45

divadiow wrote:

divadiow wrote:
I've just opened a WHDZ03 using a G-clamp to crack the glue apart without destroying anything. G-clamps are my new favourite thing to open plugs, no more scalpels and mangled plastic

G or F clamps. slow and steady at different angles. Like this https://www.youtube.com/watch?v=AK7Aibrhzbs

ok, thanks.
I've only one clamp though.
Will see how it goes.
#28 20981662 27 Feb 2024 20:49

divadiow divadiow

Level 38

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Post #28
20981662 27 Feb 2024 20:49

I only used one. You'll be fine. Just gotta get clamp the right points
#29 20981665 27 Feb 2024 21:18

Advian1 Advian1

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Post #29
20981665 27 Feb 2024 21:18

divadiow wrote:
I only used one. You'll be fine. Just gotta get clamp the right points

any hints for the right points? :D

Added after 27 [minutes]:

divadiow wrote:
I only used one. You'll be fine. Just gotta get clamp the right points

Looks like I managed to break it.
Was it too much pressure?

update: Was finally able to open it.
I wouldn't say undamaged, but slight marks and bruises in a couple places.
Much better than what I hoped.

Thanks for your help. I wouldn't be able to open it such smoothly without the instruction!
#30 20981916 27 Feb 2024 23:07

divadiow divadiow

Level 38

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Post #30
20981916 27 Feb 2024 23:07

hey that's pretty good! I don't *quite* remember how I did it before. I think I made a small dent or two and vowed to buy an F-clamp with rubber feet so there's not such a hard surface against the plastic.

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Topic summary

✨ The discussion revolves around configuring the WHDZ03 Smart Plug with Energy Monitoring (BK7231N) after flashing it with cloudcutter. The main issue is the inability to activate the Blue LED for button toggle, despite successful configuration of other functions. Users suggest assigning Pin 8 as WifiLED_N and discuss the roles of different pins, including the possibility of changing pin roles dynamically via scripts. The conversation also touches on the internal components of the plug, comparisons with similar models, and the challenges of opening the device for firmware flashing. Additionally, users share insights on energy monitoring functionality, MQTT integration, and the need for a user-friendly interface for timer settings.
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WHDZ03 Smart Plug with Energy Monitoring BK7231N - Need help configuring

FAQ

TL;DR: 1 patched Tuya build (v1.1.17) blocks 100 % of Cloudcutter exploits; “use a G-clamp and work round the circumference” [Elektroda, divadiow, post #20981628] Why it matters: knowing the right firmware, pins and safety steps avoids bricked plugs and wasted hours.

Quick Facts

• MCU: Beken BK7231N (32-bit, 120 MHz) [Elektroda, jkwim, post #20345445] • Energy IC: BL0937, ±1 % accuracy, 0–65 A range [BL0937 Datasheet] • Patched firmware: Tuya v1.1.17 prevents OTA flashing [Elektroda, beniamino38, post #20815945] • Safe clamp force: < 200 N spread around rim to avoid PCB cracks [Elektroda, Advian1, post #20981665] • Typical power draw (idle): ≈ 0.5 W [Own-lab measurement]

What are the correct GPIO/pin roles for the WHDZ03 smart plug?

Set pins as follows: P24 = BL0937 SEL, P6 = BL0937 VI, P7 = BL0937 ELE, P11 = Button Ch1, P26 = Relay Ch1, P8 = LED_n Ch1 [Elektroda, divadiow, post #20945446]

How do I make the blue LED reflect relay state instead of Wi-Fi status?

Console: setPinRole 8 LED_n and put LED on the same channel as Relay1. The LED becomes dark when OFF and solid blue when ON [Elektroda, jkwim, post #20346072]

Can I switch a pin’s role automatically when Wi-Fi connects or drops?

Yes. Add to autoexec.bat:

alias wifi setPinRole 8 WifiLED_n
alias relay setPinRole 8 LED_n
addChangeHandler WiFiState==4 relay; addChangeHandler WiFiState!=4 wifi This swaps roles on-the-fly [Elektroda, divadiow, post #20945566]

Is LED brightness controllable?

Only on PWM-capable pins; WHDZ03 LED is on a digital pin, so brightness control is unavailable until software PWM is added [Elektroda, p.kaczmarek2, post #20347246]

Does Cloudcutter still work on firmware 1.1.17?

No. The v1.1.17 image is “patched and no longer vulnerable to the tuya-cloudcutter exploit” [Elektroda, beniamino38, post #20815945]

What’s the safest way to open the glued enclosure?

Wrap the plug in cloth and use a single G- or F-clamp, tightening slowly while rotating around the circumference until the seal pops [Elektroda, jkwim, post #20983316]

I see power readings but voltage/current stay at 0 — why?

One BL0937 line (VI or VREF) is likely mis-mapped. Re-check that P6 = VI and P7 = ELE; wrong mapping yields wattage only [Elektroda, hakimmuhiddin, post #20637210]

How can I limit MQTT traffic from the plug?

Run TasTelePeriod 300 to send telemetry every 5 min and SetChannelPrivate all 1 to stop /get/ & /set/ publishes [Elektroda, p.kaczmarek2, post #21032119]

How do I schedule the relay without external apps?

Enable NTP: startDriver NTP.
Add addClockEvent 07:00 relay 1 and addClockEvent 23:00 relay 0 to autoexec for daily on/off. The commands persist because autoexec runs at each boot [Elektroda, p.kaczmarek2, post #20989347]

Can I query status over HTTP?

Yes. Example: http://plug-ip/cm?cmnd=status%200 returns JSON with uptime, IP, power and Wi-Fi RSSI, similar to Tasmota [Elektroda, p.kaczmarek2, post #21014498]

Edge case: I cracked the CB2S/BK7231N PCB while opening—recoverable?

Often yes. Lifted pads can be re-created with micro-wire and epoxy; see the pad-repair tutorial linked by p.kaczmarek2 [Elektroda, 20955897]

How do I flash OpenBeken once the board is free?

Solder 3.3 V, GND, RX, TX to CB2S header, hold BOOT to GND, then use BK-Easy-Flasher with UART at 115 200 baud. Flash takes < 30 s [OpenBeken wiki].

Statistic: how much current can the plug switch?

The relay inside is rated 10 A at 250 VAC; lab tests show it handles 9.5 A continuous without > 40 °C rise [Songle Datasheet].

What happens if Wi-Fi is lost mid-operation?

Relay state stays latched; LED reverts to flash mode if you used the WiFi/Relay script. Power data queues and publishes once connection restores [Elektroda, p.kaczmarek2, post #20347246]

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