ADT Honeywell fob remotes have a default programming that adds delays to the signal being sent to your security system, so that it is not activated by accident while in your purse or pocket. You can change the remote's four buttons so they have "instant" signal transmission. If you haven't tried to program the remote to send instant transmission, don't worry. With the right instruction, you can do it in under two minutes.
Press all four buttons on your ADT remote and hold them until the light on the remote flashes. The light will flash within three seconds.
Release all of the buttons on the remote.
Press the "Stay" button on the remote to change all of the buttons (except for "Panic") to become instantaneous.
Press the "Disarm" button to reset the remote's frequency. This step might be required whenever you take out the batteries or replace them.
Press the "Panic" button to select either "On" or "Off" settings for that button. The LED will flash twice if set to "Off" and only once if set to "On."
Press the "Away" button to change back to the default delay settings for the "Panic" button, along with the other three buttons on the remote. The red LED light will be illuminated to indicate that it is sending the signal to the system and receiving its programming.