Or flip a switch at the bottom of the stairs, and then again at the top. The next person, coming from either direction, must be able to turn the light on again. That's where 3-way switches come in.

Add/Relocate 3 Way Switch without Rewiring - Simply wired between the power and lighting fixtures; no complex in-wall rewiring or WiFi needed to add/relocate switch, pre-programmed for immediate use.

Who they are: This team (a combination of EPD Group No. 2 and No. 3 ... Switch 2 launch: Probably close to zero, since the team works on Nintendo’s smart device software. Beyond its internal ...