The Echo 18 is a WiFi / WLAN dedicated PCB antenna tuned between 2.4 and 2.5GHz and achieving a peak gain of 0.8dBi. It is suitable for applications where internal space for components is extremely limited or when using an external antenna is simply not appropriate.
The small design allows this antenna to be simply fixed to the inside of an enclosure. The Echo 18 is therefore suitable for a host of wireless IoT applications that require a space conscious embedded antenna solution.