Arduino IDE source code: 
  PCF8574-DI.zip (Size: 806 bytes / Downloads: 1109)

I noticed the "Multichannel Omron Relay Module" item on your store (https://www.aliexpress.com/item/1005003084693879.html). I have some questions about it: (1) Does it have flyback diodes per channel? (2) Where are the capacitors schematically connected to?
Thanks, Elad.

I noticed there are these slim relays out in the market (example: https://id.aliexpress.com/item/32888741133.html). It can save lots of space in the electric distribution box (comparing to classic wider OMRON relays). All the lights in my house are LEDs of max 40w, so theoretically 6A should be enough per channel. Do anyone have experience with these slim relays? Are they reliable & safe? Do they really could withstand 6A or is it over-specification? Should their expected lifetime be similar to the 10A OMRONs?
Thanks, Elad.

Is it possible to connect multiple KC868-HxB actuators in serial communication with a KC868-COLB unit? Let's say I want to formulate a logic rule that changes the state of relays from multiple actuator units - is it possible?
Thanks.

Arduino IDE source code: 

  PCF8574-DO.zip (Size: 771 bytes / Downloads: 1275)

https://www.kincony.com/download/KC868-A8-schematic.pdf

https://www.kincony.com/download/KC868-A4-schematic.pdf

Arduino IDE source code: 

  LAN8720_UDP.zip (Size: 902 bytes / Downloads: 1329)

Hi

I'm trying to set two relays at once, but only one changed.

I publish via Home Assistant MQTT:

relay32/xxxxxxxxxxxxx/set

{"relay17":{"on":1},"relay18":{"on":1}}



but only relay17 state is changed

please answer
Is it possible to set more than one relay by one MQTT publish command?

with regards,
Gene

thanks for "Calin Mihai Cioci" from UK, the 3D stl file design by him. more details about his KC868-A4 project, see this link:
http://calincioci.uk/kinconya4/

3D print files for Base:



https://www.kincony.com/images/KC868-A4/...ase_A4.stl
https://www.kincony.com/images/KC868-A4/...se_A4.step