@Tony
You can control any of the CQ range remotely using the CQ-MixPad app as follows:
CQ-20B – Via built-in WiFi OR Router/Access Point connected to the Ethernet port OR Direct connection to the Ethernet port.
CQ-18T – Via built-in WiFi OR Router/Access Point connected to the Ethernet port OR Direct connection to the Ethernet port.
CQ-12T – Via Router/Access Point connected to the Ethernet port OR Direct connection to the Ethernet port.
So referring to your original post, you would need the CQ-18T if you didn’t want to use an external router or access point for wireless control.
Cheers!
Keith.