While you wait for answers, we may have found some information which could help you.
Click here for Middle Alarm GoingStuck button on gardtec 500?
change battery on gardtec800?
How do I take Gardtec 580 keypad off wall?
Gardtec cpx lost chime yet again?
Could anyone help me with gardtec 360/580 anti-code reset?
How do I reset my gardtec300 alarm ?