Why doesn't sentry live surveillance work when one of the doors is open?

[EVchiq]

I accidentally left my car door open the other day.

I wasn't sure if it was just cracked open or if it was completely wide open to the elements.

I tried to look on the sentry app but it said "door is open sentry live cam disabled.

I wish it would work when the door is open so i can check how urgent it is i need to get back to the car to close it

 

[Rice&Curry]

My guess is that sentry is supposed to work when you are away from the car ( the car is locked) and hence if the car is left open with one door not closed , it does not switch on. However you can set it to alert you on the phone if any door is left open for an unusually long time or window is left open.