The two-side heat dissipation design can effectively prevent the intrusion from dust and quickly dissipate heat. . 4 External Antennas for Strong and Stable Signals. . Support one-click connection WPS, support WPA/WPA-PSK, WPA2/WPA2-PSK security mechanism. . Built-in firewall supporting IP address filtering, Domain Name filtering. . Fully compatible with any devices like iOS, Android devices, Echo/Alexa devices, PCs, PlayStation, smart plugs, and so on