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

KC868-H32B V4.20 firmware download:
download the ZIP file , unzip update the bin file for KC868-H32B relay controller by USB-RS232 cable.

  Relay32_V420_210416.zip (Size: 41.53 KB / Downloads: 1060)

improvement:
add digital input auto upload function. Now not always to search or read the DI input. when every DI state changed will auto report.

  AD_Sample_V1_0_19_210414.zip (Size: 19.06 KB / Downloads: 979)
Unzip file , use Bootloader tool update BIN file by USB-RS232 cable.

I am interested in your product to create HomeKit automation to control lightning.
But I have the question - is that possible to use impulse relay output?
Asking that because my home system is build in impulse relay switches 24v to toggle lights. And I am looking for a solution to control that from HomeKit
Thanks in advance for help and suggestions.

this is arduino code for voice module (ESP8266) control by Amazon alexa. it not need use sinric or any third platform. just voice module connect to alexa cloud server directly.
MAX support device number :10pcs. if want to support more, need change the code, or you can use google find out some code solution.
make sure install espalexa.h library file on arduino IDE.

  KC868-Alexa.zip (Size: 1.49 KB / Downloads: 1831)

improvement:
add scan device Broadcast command for UDP. This command for software developer scan KC868-COLB in network.

use local network port=4000  send Ansi-String "scan" to remote IP:255.255.255.255 Port:4001
all KC868-COLB 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:COLB


  AD_COLB_V1_1_2_210329.zip (Size: 38.78 KB / Downloads: 1035)

now you can weld a RF receiver module (315MHz or 433MHz) with ESP8266 module (voice module).
write some arduino code will support RF sensor decode ,it's easy to integrate RF sensors for trigger any relay output or do scene mode.
   
   
   

MulitiBoardCtrl tool is windows software for PC and tablet. it support use KC868 all relay controller model and all KC868-COL/COLB logical controller. 

1. one software window support MAX 254 device (relay board+COL/COLB board).  
if you add 254 units of KC868-H32B, then you can control total 254*32=8128 channels relay output.

2. we have add the log function, every relay state changed by ON/OFF, will save the data the time to log file.

3. software is open source, write code by visual studio C#. anyone can modify and update it.


source code download link: https://www.kincony.com/download/MulitiB...e-code.zip

MulitiBoardCtrl tool is windows software for PC and tablet. it support use KC868 all relay controller model and all KC868-COL/COLB logical controller. 

1. one software window support MAX 254 device (relay board+COL/COLB board).  
if you add 254 units of KC868-H32B, then you can control total 254*32=8128 channels relay output.

2. we have add the log function, every relay state changed by ON/OFF, will save the data the time to log file.

3. software is open source, write code by visual studio C#. anyone can modify and update it.

download link: https://www.kincony.com/download/MulitiB...3.0324.zip

improvement:

1. 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=RD&postpwd=XXXXXX
Then will feedback all state.

2. support use MQTT function by 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

3. 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.

4. add option on config webpage, you can chose any relay channel for momentary work mode, and set the delay time for auto off.

KC868-H32B V4.19 firmware download: 
download the ZIP file , unzip update the bin file for KC868-H32B relay controller.


  Relay32_V419_210321.zip (Size: 41.45 KB / Downloads: 1160)

HI, CAN I USE ONE KC868 COLB TO manage multiple Relay boards. for example :
Am working on a project that needs multiple KC686-H32B Relay assembly.
and i want to use one KC868 COLB to drive up to 2 units of KC686-H16 and i unit of KC686-H32 located at different remote location from each other.