Tuya 24GHz Radar Sensor with WiFi (CBU Module): Serial Pinout, DP List, Parameters

Tuya 24GHz radar sensor with Wi-Fi
model: ZG-205WB

Source: i.e. https://de.aliexpress.com/item/1005005904142527.html
The radar sensor is made by Tuya-module CBU.

All needed pins are accessible. You can flash it without dismounting the module.






There are only the TX and RX pins used.
All communication is serial with the Tuya coprocessor.
Note: If you power it with 3.3 V direct on CBU - the Tuya coprocessor does not work.

I do not use HA but IP-Symcon. That is why I cannot say anything about HA-integration.

The original documentation can be found at https://doc.szalarm.com/zg-205Z/en/

The Tuya dp's are:
(as shown in "SmartHome")

messages
dp1: Presence: enum [0,1]
dp116: Motion: enum [0,1,3,4,5]
00 - none
01 large move
03 stillness
04 far away
05 near
dp101: Illuminance: val(0..2047)
dp122: Distance: val(0..1000 cm)

parameter
dp103: Indicator: enum[0,1]
dp119: Motion false detection: val(0..20)
dp108: Presence keep time: val(0..28800 s)
dp3: large motion detection: val(0..1000 cm)
dp2: large motion sensitivity: val(0..10)
dp105: small motion detection distance: val(0..60 cm)
dp106: small motion sensitivity: val(0..10)
dp4: stationary detection distance: val(0..600 cm)
dp102: stationary sensitivity: val(0..10)
dp123: detection minimum distance: val(0..600 cm)

Hello friends,

Some questions for the group:
All of them are "nice to have", and all of them make sense to me.
Software:
- Are there any common standards for the channel numbers? The most important channel, of course, is number 1. And the others?
- Is it possible to translate the channel number for MQTT into plain text? <topic>/presence = 1
- Is it possible to combine all channels into a single JSON output to MQTT like {"presence":0,"motion":0,.....}?
- The enumeration from content to plain text for MQTT is planned ("SetChannelEnum"). Is it on the roadmap?

Hardware:
There is a small button for joining the net. It has no useful function for me. How do I disable it? Cut with a knife? If I press the button for 3 s, the Wi-Fi connection is cut off with no return. Only by power cycling is the normal function restored. How was it implemented in other projects?

Thanks for your help!
Andreas