In my opinion, for surveillance, you would want as many shots as you could get of the intruder to help identify them. With that being said, you also want to make sure that you don't max out your SD card too quickly, since you mentioned you live so far away from the property.
Keep in mind, that even though pictures will not continue to send to your phone/email address during the transmission time, they will still store to the SD card, which means you can always review them later if someone does trespass and you need more shots.
A 2-3 minute interval seems a bit long to me, especially for security. Someone could be in and out within just a couple minutes, and you may not get many shots. Most of the pictures should transmit and be ready to send the next picture within 30 seconds to 1 minute in my experience.
The best option is to experiment a bit. Take your cell phone out with you to the property, set up the camera, and play around for awhile until you get some settings that seem to work. I may start with a 2 or 3 picture burst setting, and a 15-30 second interval just to see how that works out. I know if I was monitoring a property, I'd want to get as many pics as possible if there was an intruder. To help save space, you could set the camera to 5MP, which should still give you a nice quality shot.
Again, if you can, take it out and play with it for awhile. It's different for everyone it seems.
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