To control the Nest Protect (2nd Gen) over Wi-Fi, make sure your router is supported by the thermostat. If you use an incompatible router, you may have problems connecting to the thermostat. As such you should check that your router is not one of the Nest Protect unsupported routers which include the following:
Nest recommends that you use specific Wi-Fi router network configurations to get the best experience with Nest devices. For instance, the Nest Protect (2nd Gen) requires routers to support IPv6 communications over the local network.
Reviewed Products
Hawking router HWRN2
by Hawking TECHNOLOGYNETGEAR WNR834B-100NAS Wireless N Router
by NETGEARCisco-Linksys WRT110 RangePlus Wireless Router
by Linksys, LLCLinksys WRVS4400N Wireless-N Gigabit Security Router - VPN v2.0
by Cisco SystemsBrand New D-Link Dir-636L Ieee 802.11N Wireless Router
by D-Link CorporationD-Link DAP-1360 Wireless-N Range Extender
by D-Link CorporationWireless N 300 Cloud Router
by D-Link CorporationWireless N300 Gigabit Router
by D-Link Corporation