Once again, IEEE 802.11ah -Wi-Fi HaLow-, completely forgotten. This one would be perfect for all the lights/sensors.
Latest-gen zigbee stuff and zwave 800 seems to have already thoroughly occupied that niche for a great deal of home and office automation equipment.
There aren't any usable chipsets with usable drivers for 802.11ah unfortunately.
Latest-gen zigbee stuff and zwave 800 seems to have already thoroughly occupied that niche for a great deal of home and office automation equipment.