improvement:

1. add relay control by webpage
2. support http command for developer integrate to third-party software to tun on/off relay and read relay state.
3. add web config password
4. add read input state http command for developer integrate to third-party software. you can send http command to get information of 6 channel digital input port state.

Command is like this, send:  http://192.168.1.xx/sw_ctl.cgi?RelayFF=R...pwd=XXXXXX
Then will feedback all state.

5. support use MQTT function by Ethernet or WiFi. it will easy integrate to third-party software, like home assistant...
how to integrate to home assistant by MQTT, see this link: https://www.kincony.com/kc868-h32b-integ...-mqtt.html

6. add option on config webpage, you can chose whether relay will remember the state before power off. Just whether receover relay sate when power on.
7. add option on config webpage, you can chose any relay channel for momentary work mode, and set the delay time for auto off. Relay "Momentary Time" extend to "1-10000 seconds"

8. add scan device Broadcast command for UDP. This command for software developer scan KC868-H32B in network.

use local network port=4000  send Ansi-String "scan" to remote IP:255.255.255.255 Port:4001
all KC868-H16B in same network device will feedback: device's IP,Port,UID,type
for example:
send->scan
feedback: 192.168.1.200:4196,uid:xxxxxxxxxxxxxxxxxxxxxxxx,type:H16B

9. Improve the stability of anti-interference, if ethernet line failure by interference , now will automatic restart ethernet chip.

make sure your KC868-H16B metal box top lable have "AT" words, like this photo. so that have 256KB flash memory enough for update. If not use the MCU chip, if you can weld, replace the MCU will support new firmware.
   
KC868-H16B V4.29 firmware download:
download the ZIP file , unzip update the bin file for KC868-H16B relay controller by USB-RS232 cable.

  Relay16_V429_210722.zip (Size: 43.28 KB / Downloads: 281)

Hy Everyone.
 I want to build a distraction board for a small residential building on my own and I don't know how to go about it. I'm a beginner and this is going to be my first project.

 I need help on where to start, materials I would need,  tools I would need and how to get them.

how to turn ON/OFF relay and get relay state feedback for Loxone home automation system
playlist: https://www.youtube.com/playlist?list=PL...IFSG_gIoQt

We have designed Mini version for KC868-COLB. it have 8 digital input ports and 8 analog input ports, all functions as same as KC868-COLB. KC868-COLB-Mini is smaller than KC868-COLB, it can save your power distribution box space. also support install the PCB on the DIN rail without metal box.

1. You recommend using an RC snubber for contactors. However, the contactors you usually use are operated with AC voltage. Is it recommended to use an RC snubber for 12V DC contactors as well? Or is it relevant for AC only?
2. What does the RC snubber actually protect? Is it the circuit that feeds the control voltage to the contactor, or the output load consumers? Or both?
3. I couldn't find on the market contactors with built-in RC snubber as you sell. It is never mentioned. Even with big companies like ABB. Why is that? Is it your own idea to insert the snubber inside the module? Or maybe they put it and just don't mention it?

Thanks a lot,
Elad

The contactors sold at Kincony's store are operated with 230V AC.
1. Can you recommend other contactors that use 12V DC for operation?
2. Are there any downsides for using 12V DC contactors instead of 230V AC ones?

Thanks,
Elad

Is it possible to work with more than one DS18B20 in the same channel of the COL-B?

I would like to monitor more than 5 temperature points...

Add the repository URL under Supervisor->Add-on store->...->Manage add-on repositories:

https://github.com/zigbee2mqtt/hassio-zigbee2mqtt

data_path: /config/zigbee2mqtt
external_converters: []
devices: devices.yaml
groups: groups.yaml
homeassistant: true
permit_join: false
mqtt:
  base_topic: zigbee2mqtt
  server: mqtt://192.168.2.220:1883
  user: mqtt
  password: '123'
serial:
  port: /dev/ttyACM0
advanced:
  log_level: info
  pan_id: 6754
  channel: 11
  network_key:
    - 1
    - 3
    - 5
    - 7
    - 9
    - 11
    - 13
    - 15
    - 0
    - 2
    - 4
    - 6
    - 8
    - 10
    - 12
    - 13
  availability_blocklist: []
  availability_passlist: []
device_options: {}
blocklist: []
passlist: []
queue: {}
frontend:
  port: 8099
experimental: {}
socat:
  enabled: false
  master: pty,raw,echo=0,link=/tmp/ttyZ2M,mode=777
  slave: tcp-listen:8485,keepalive,nodelay,reuseaddr,keepidle=1,keepintvl=1,keepcnt=5
  options: '-d -d'

sensor:
  - platform: mqtt
    name: Voltage
    state_topic: "zigbee2mqtt/0x00158d00067ec29e"
    value_template: "{{ value_json.battery }}"
    unit_of_measurement: "%"
    availability_topic: "zigbee2mqtt/bridge/state"
    payload_available: "online"
    payload_not_available: "offline"
    qos: 0
    device_class: battery

  - platform: mqtt
    name: signal
    state_topic: "zigbee2mqtt/0x00158d00067ec29e" 
    value_template: "{{ value_json.linkquality }}"
    availability_topic: "zigbee2mqtt/bridge/state"
    payload_available: "online"
    payload_not_available: "offline"
    qos: 0
    device_class: signal_strength

  - platform: mqtt
    name: click
    state_topic: "zigbee2mqtt/0x00158d00067ec29e"
    value_template: "{{ value_json.click }}"
    availability_topic: "zigbee2mqtt/bridge/state"
    payload_available: "online"
    payload_not_available: "offline"