I started out as a customer of Telecom Security 23 years ago and was "sold" on ending up with ADT as my supplier. I now want to stop paying for service/monitoring and install a cqr GSM dialler to my system. I cant find any spec or even a reference to my system anywhere; it says dss 860 uk on the wall box, the remote panel has a flap down plastic panel that coves fire green cross and an american looking police shield button.
Anyone know how I should wire up the dialler?