If it’s zigbee and it plugs into an outlet it (is a repeater) will make Zigbee better. Also water and rf, in this case Zigbee don’t play well. If you wife lays down while her key fob is in her pocket, Zigbee may have issues detecting the fob… as humans are 70-80% water. For a solid Zigbee mesh it is recommended to have a Zigbee repeater in every room and can help ensure your smart button works too.