TP-LINK's TL-WA854RE is designed to conveniently extend the coverage and improve the signal strength of an existing wireless network to eliminate dead zones. 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, 5 signal lights represent the current signal strength that TL-WA854RE receives from existing router, Tether App allows easy access and management using any mobile device, LED Control function includes a Night Mode for peaceful sleep.