2.4 GHz Wi-Fi Extenders: What to Check Before You Buy

It can work if the router also broadcasts a compatible 2.4 GHz network. A single-band 2.4 GHz extender will not repeat the router's 5 GHz network.

Lower-frequency 2.4 GHz signals can behave differently through obstacles than 5 GHz, but results depend on materials and interference. Neither band guarantees coverage through a particular wall.

It may improve signal availability for devices in a weak area, but it does not increase the broadband service speed. Congestion and the extender's link to the router can reduce throughput.

Choose single-band if your network needs and devices only require 2.4 GHz and the model's features are sufficient. Dual-band gives more flexibility for compatible 5 GHz devices, but check how the extender handles both bands.