Hello @mystery,
The Dome has an M35 screw mount, if you use the Ethernet splitter (supplied with the Dome) directly attached, the screw fitting is covered and the mount is thus no longer pole mount. (You can see this in the pictures on the product page https://www.peplink.com/products/max-hd1-dome/)
Currently, the Dome does not have a Wi-Fi modem/antenna and this is in the already requested in the forum here Max HD2 Dome -WiFi WAN feature- (add your voice to promote it up their to-do list 
)
Good luck with your setup!
Cheers.