Upgrade Car Alarm for cars with existing remote door lock/unlock function

[sunw9]

Hi,
Installed Smartkey PKE003 but lost one remote. Thinking of changing to this alarm. Comparing Smartkey and ASC upgrade, which alarm has the longer range ?

[ocpi]

Hi,
Installed Smartkey PKE003 but lost one remote. Thinking of changing to this alarm. Comparing Smartkey and ASC upgrade, which alarm has the longer range ?

Asc upgrade alarm is only for those cars without alarm system and wants to upgrade to a basic alarm. Not suitable for u. I should get Easycar e771as instead