what is a wifi signal booster

4W 2.4G 802.11b/g/n Wifi Signal Booster Wireless Lan Network Signal Extender

2G 4G GSM Signal Booster 900MHz 1800MHz Dual Band Wifi Repeater

OLAX WR01 4G LTE Mobile Signal Booster Black 1800mhz 2100mhz 2600mhz

10/100M Signal Booster 2.4G 300M Wifi Router Repeater

800~2600Mhz 50Km Dome Wifi Antenna Smartphone Cellular Signal Booster Antenna

2W Indoor WiFi Wlan Booster , N Connector WiFi Signal Repeater

SMA Wireless WIFI Signal Booster EST-1W , Cell Phone Signal Booster

KP300W Long Range Wifi Access Points OEM Mobile Signal Booster Repeater Booster

Repetidor Airplane 2.4G WiFi Wireless Signal Booster Dual Band 3W

Enhance Your WIFI Connection with 2.4GHz WIFI Signal Booster and Customzied Connector

Mini Long Range Wifi Extender 802.11n Cell Phone Wifi Signal Booster

Drone WiFi Signal Booster Module 3 W 4W 5W 2.4G 5.8 G Bidirectional PA WLAN

Black / White 4G LTE Antenna Wireless Indoor LTE 50OHM Impedance With Signal Booster

WiFi Range Extender 300Mbps WiFi Signal Booster Amplifier COL-WR16

Indoor 2500MHz Wifi Router Antenna Mobile Signal Booster 5dBi

Cellular Signal Boosters Repeaters GSM900 Dual Band Wifi Repeater for Hotel

5.8G V2X Antenna Omnidirectional Fiberglass Outdoor For WiFi Signal Booster

External WiFi range booster antenna 2.4 GHz 5dBi with mag mount

Practical 50/60Hz Wireless WiFi Signal Booster 802.11AC 64MB RAM

Custom Mobile Signal Booster Triband Cell Phone Signal Repeater With Antenna Wingstel Wifi GSM 2G 1000-2000 Squar