WiFi Signal Booster 2.4Ghz 802.11b/g/n Signal Extender WiFi Repeater Broadband Amplifiers Wireless Router 5dBi Antenna Improving the link quality and coverage of certified WLAN devices. Simply plug and play, no software is required. Working with certified IEEE 802.11 b/g/n wireless Lan devices. The wifi signal booster used for extending or amplifying 2.4Ghz wireless networking equipment's signal. The max input trigger is 20dbm, if inputting over 20dBm, the product may can not work or get over-heated. 5dB ultra-low noise, 6V to 16v operating input voltage range. NOTICE: The wifi booster only boost the wifi coverage range, BUT please know that it couldn't boost the speed of your original router or hold the same speed of the original router.