@yankees4life From the pictures, you have to connect the red that was on the black screw to the black screw of the HS210. The other red and white wires go the the travelers screws of the HS210. The...

@tward1 Not much that I can see, other then the look of the switches.

@dmelideo You only need to replace the one 3way switch that has the power source and neutral.

@tward1 If you have a light that is controlled by 3 switches, then you have a 3way switch at each end, and a 4way switch in the middle. You only need one HS210 to replace the 3way switch that has the...

@tiger88 connect the Wan interface of the main router to the ONT. Connect the hub to the Lan interface of the main router.

@Pbaker did the original switch have 2 wires to one screw, and one wire on the other screw?