Or without a smart HA system that can compensate somewhat, it would be nasty to come home after a week and find all your lamps on since who-knows-when. At least they would be LEDs and not high-consumption incandescents, though.Automate said:I don't have the Cree's but do have other smart white LED bulbs (TCP Connect and GE / Wink Zigbee) and they all turn on when the bulb power transitions to on. But remember this can work against you if you have a power blip. Every smart light in your home will turn on. If the light is in a bedroom and it's in the middle of the night it would be very annoying.