GT06 - Accurate Timer

Hi.

Someone knows how to set auto tracking in this device.

I want that send
30 seconds when Car is ON.
And 30 minutes when Car is OFF.

This command doesnt work like i want It

#at#30#sun#0#

This command doesnt work #TIMER,30,3000#123456#

Hello, i have some accurate devices (GT06).

You are almost right!!! the comand is : #at#30#sum#0#

SUM not SUN

Greetings!!