Alpha RY912 12 Line Relay Board-No Phone Bill | 123 Security Products

12 Line Relay Board-No Phone Bill Plugs into the IH996 Housing/S Used with Telephone-Entry Series 'No-Phone-Bill Systems'. The Alpha Communications® RY912 12-Line Interface Relay Board is designed to provide 'no phone line capability' when interfaced with the Alpha Communications® TE903NP, TE904NP or DPW100W (concierge/guard) master/phone stations, and PM900 OR PM904 control cabinet(s). One (1) RY912 is used for each 12 (or fewer) remote telephones that need to be connected to the telephone entry system. Each RY912 requires a model CT925 connecting cable and a customer supplied RJ71C p