Fresh from an estate of a local TV/Radio repair person, this is a vintage Ademco No. 612 Automatic Telephone Dialer that is used for burglary alarms and/or fire alarms.  Unit comes with a key to lock it, its original installation instructions and a copy of a bill of sale from 1985.  Unit is untested and is being sold "As Is".  Original packaging box is in fair condition with a tear on one side.  Do not hesitate to make an offer all will be considered.