With the NodOn Zigbee 2-channel 2*3A relay switch SIN-4-2-20, you can conveniently control one or two lights remotely via your smartphone or voice commands. . With easy installation options, it can be placed behind a wired wall switch on the ceiling or in the switch panel. Please note that this switch requires a Zigbee-compatible home automation system for optimal use in a multi-protocol smart home hub environment.