Quote Originally Posted by number001
Quoting Attynorby

5. TxtAlert is independent from your existing anti-theft device. You can still use your vehicle's remote alarm system the way it is being used before. The two devices do not conflict with each other.

As stated above, you can still use your "default" alarm system along with TxtAlert. They function independently. It is good. If the other fails, you still have the other one. Actually, you can also use TxtAlert solely for the purpose of protecting your vehicle. If the area is dangerous, better to arm both devices.

It is a must that your vehicle is equipped with centralized-power locking system. Arming and disarming not only prompts TxtAlert but also locks/unlocks your doors. Since your "default alarm system"/remote also locks/unlocks the doors, you have to lock/unlock your vehicle using your "default alarm system"/remote; if not, your vehicle will sound your "alarm" if it was disarmed/unlocked using TxtAlert. It is again emphasized that the two devices work independently and "cannot read" each other's command(s). If your car does not have a "default alarm system", you do not have to install one; TxtAlert will do the job.
You can disarm the device first bago mo ipahiram para di mag send palagi ng alert ung device. In case u wanted to locate the car via Telco's locator u can still locate it kahit nakadisarm ung device. There is no difference dun sa forcible entry at nabuksan ang pinto while nakaarm ung device.