2.4 GHz Omni Antennas
Omnidirectional WiFi Antennas (Omni Wi-Fi Antenna): Omnidirectional antennas spread the wifi signal to all directions to serve the signal to a wide area. Omni Antennas are typically used on WiFi base-stations (e.g. for WiFi routers or Access Points).
In principal: The higher gain of the antenna (declared in dBi), the higher the range of it.