Can an external antenna be interfaced to eS-Wifi modules?

WiFi Products by Inventek

Yes. We supply certain modules with U.FL connectors. We use a “-U” at the end of the part number to designate those with the U.FL connector. The ISM4319-M3-L44-U and ISM43362-M3G-L44-U have U.FL connectors and our antenna, part number w24-SSMA-M  has been FCC and CE certification.

We also recommend that you buy an SMA to U.FL adapter to connect your external antenna