I’m a complete newbie in home automation and currently exploring which wireless technology to use. I’m interested in making my light switches wireless, so that I can toggle them through my mobile phone, but at the same time be able to use the existing buttons on the wall as an alternative. I did some research and saw that I can either install mini wireless relays behind the switches, or completely replace the switches with wireless (Z-wave or Zigbee) ones (mains-powered, not using batteries).
Now, one thing that is of great importance to me, is minimizing the amount of time that these devices are actively transmitting data, as I’m concerned about exposure to electromagnetic fields. Ideally, I would like transmissions to be made only when I try to toggle the status of a switch through my mobile phone, or when I press the button on the wall and the switch needs to report the new status back to Homey. I do realize, however, that there needs to be some periodic polling as well. So I tried to find a clear answer on how often the Z-Wave and Zigbee technologies are designed to transmit when all the devices are idle, but failed. I understand that there may be no simple answer to my question, but I was hoping that maybe someone could shed some light on this topic.
Thanks in advance.