Is this setup to take a maximum 2 amp load? Plenty for a lighting circuit, just curious in case someone tries to use it on a switched outlet circuit etc.

J1 is power feed and J2 are the three switched outputs right with the wall switch connected using D5 - D6 - D7 right?

Thanks for the quick reply! I didn't realize that NRF24 uses a wider band. Perhaps the link I mentioned in my first post is adequate. I am new to IOT and using the RF already supported might be more realistic.

Thanks again!

I have been searching the forums for quite some time, but might be missing something as I am very new here. Has anyone developed in-wall mains powered light switch with an RFM69 radio? I am thinking of something similar to https://www.mysensors.org/hardware/ac-dc-ssd-relay but where I live the 2.4ghz frequency is extremely crowded. Another alternative I have considered (but know nothing about) is sending the communication down the powerline itself; is this a viable option?

My end goal is to construct a bunch of light switch nodes within my home that can be controlled either by the standard North American switch already there, or remotely. Because I plan to make a bunch of these, I am trying to be very budget conscious. Along the same lines, is the RFM69 implementation within RPI reliable enough for this kind of application at this time? I noticed it is in the development branch.

Thanks!