How many accessories can be connected to the K1 hub? Support January 19, 2018 14:52 Updated Follow The K1 hub can be extended with up to 50 sensors. Only K1 compatible accessories can be connected. See what can be connected in this article. Related articles K1 accessories; what can be connected? Where should I place the K1 hub? smanos K1 manual K1 power gets cut, what happens? Check if a door/window is opened or closed Comments 0 comments Please sign in to leave a comment.