For a two story house you should have a lot of units and if you have a built in camera which really sucks then you should have one in the garage so you can take pictures outside be able. The units are not out, but the range and range are not great.
TP-Link Deco X60: Ultimate Whole-Home Mesh Wi-Fi3-Pack with WiFi 6 AX3000
19 Review
Tenda Nova Mesh WiFi System (MW3) - Complete Whole Home Coverage, 1-Pack
25 Review
Get Superior WiFi Coverage with TP-Link Deco X20 Mesh System πΆ - Covers 5800 Sq.Ft, 6 Ethernet Ports, Wired Ethernet Backhaul Supported (3-Pack)
19 Review
Wi-Fi Mesh system Tenda MW3-3, white
18 Review
π Juiced Systems Silver BizHUB USB-C Multiport Gigabit HDMI Hub with 3 USB 3.0 Ports, Gigabit Ethernet, 4K HDMI, SD/Micro SD, and USB-C Power Delivery
11 Review
π USR-TCP232-410s: RS232/RS485 Serial to Ethernet Adapter/IP Device Server with DHCP/DNS Support
4 Review
π uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
11 Review
HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review