Quick overview from the supplier:
Wireless Access Point TP-LINK "TL-WA850RE", 300Mbps Universal WiFi Range Extender
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Range Extender mode boosts wireless signal to previously unreachable or hard-to-wire areas flawlessly
Miniature size and wall-mounted design make it easy to deploy and move flexibly
Easily expand wireless coverage at a push of Range Extender button
Ethernet port allows the Extender to function as a wireless adapter to connect wired devices
Tether App allows easy access and management using any mobile device
LED Control function includes a Night Mode for peaceful sleep
