hello there, i think best you check with your condo building management or contractor whom is doing your house renovation.
for hdb, we do not have the neutral wire, therefore you need to know before making purchases as some of the switches need neutral, some no need.
Thanks shacboi... Will check it out.
Really? There is no pairing (e.g. PIN) required? Wouldn't it make it easy for people to hijack the switches and wreak havoc? But I would imagine there will be interference if there are many devices running at 433Mhz... just like WifiIf you use RF switch (typically those 433Mhz one), becareful as the control unit is very simple and only few code protection. So your network may be affected by installation nearby.

