While you wait for answers, we may have found some information which could help you.
Click here for Moved Alarm OwnerGardtec 800 system error code -t after power cut?
how can I disable a Gardtec series 300 alarm?
change battery on gardtec800?
How do I reset my gardtec300 alarm ?
Gardtec cpx lost chime yet again?
Could anyone help me with gardtec 360/580 anti-code reset?