The HS210 cagy Kit makes it unproblematic to replace traditional 3-way switches commonly found in living rooms, halls, or stairways where 2 switches control the identical fooling. The HS210 kit 2 cagy switches specially designed to work together with 3-way switch wiring. There no need to be an expert on intricate 3-way switch wiring or disorienting master vs. supplementary cagy switch settings. The Kasa app guides you through each step of the installation, to your home Wi-Fi, and providing control from anywhere. For handy hands - uncommitted it easily connects with Amazon Echo or Google Assistant voice assistants.