This product is Zigbee compatible but for setting it up on Wink we advise contacting the Hub manufacture for assistance.
Most of the hubs that run the light can control multiple items. I would check with whatever hub manufacture you choose to use as to how many it can control. Most of have seen can handle up to 50.
This would be determined by how Wink sets up that feature in their programming. You would want to contact Wink to find out for sure.
Yes, the Smart+ product will work on the Lightify Gateway. That being said all features may not be available. That depends on OSRAM the manufacture of the gateway to have programmed all the functions.
Yes, this product is intended for a ZigBee hub, although switches can control these lights. However, be advised it will not work with dimmer switches.
Yes, this would be compatible with the Lightify hub.
This product does need to be plugged in. It is 12Volts but has a power supply that converts to 120 to be plugged into a wall outlet.
Just a quick correction. This uses a 5 conductor extension not 4. But they are available
Yes, but you have to buy a connector kit. It is expensive if you only need the one connector.