cgs11

Have a Gardtec 370 alarm that was here when we moved in. Suddenly the door sensor has stopped working. Managed to buy a new one but links and connections look different. If I connect as it says with the links it says it does not wwork. Will work if I remove the alarm link but only as a door chime. Anyone know how many wires go to the door sensor? Maybe I forgot somethhing. (Not unusual lol.)

I have the Gardtec 370 581/582.alarm. Twice recently even when not armed the alarm has gone off with error code Fb which it says is fuse/battery failure. Any idea how do I disable the alarm completely so as to prevent this temporarily and who do I contact to buy a new battery. Thanks for any help.