your house is too big, using only one smart gateway may cause incomplete network coverage and unstable signal reception.for Zigbee signals cannot cover every corner. Then you can use this for Zigbee . for Zigbee Repeater plug and play (need to be used with Tuya for Zigbee gateway) for ZigBee Communication Method: Tuya for ZigBee uses for ZigBee communication method to stable and reliable connection between devices. Extender: This device can extend the range of Tuya for ZigBee network and strong signal strength, coverage, and can accommodate large multi-bedroom residences Smart Home Automation: Compatible with Tuya for Zigbee devices, allowing you to remotely control devices and automate home functions. Note: This repeater can only mit for zigbee signals, and the mission signal strength depends on the actual house. Voltage: AC220V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Color: White Material: plastic Package Contents: 1 x Tuya ZigBee3.0 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.