Sony NEX interval timer app

I understand this is not the best place for this post but the DJI area is very active with lots of user so I thought I might get some good advice from Sony NEX users.

I'm looking to fly a Sony NEX.

Since I'm considering a used model to keep my cost down,
I'm not sure which model I'd need that has an interval timer capability.

I understand the newest models can be loaded with an APP the facilitates an interval timer.

Also what are Sony NEX aerial photographers using to remotely trigger their camera and what is the range if the trigger.

Flying a DJI F-550 with Naza M so I've heard Naza and WiFi signals don't mix well.

Thanks in advance for any tips or photos of your NEX set-up.
 

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