The device that is having the functionality of ignition detection/sleep mode is RUT850. As of now, we don't have any other device that is having that functionality. But if you want to have the same functionality you can connect the RUTX11 to the ignition wire of the car since in the ignition mode most of the car accessories are turned on. It will be applicable also with RUTX11 when connected to the ignition wire, so when the car is in ignition mode RUTX11 will be powered by that time also.
I hope it helps