The PM904 from Alpha is a Mini Control Unit with Cabinet designed to provide ‘no phone line capability’ when interfaced with the Alpha Communications® TE903NP, TE904NP or DPh200W (concierge/guard) master/phone stations, up to a maximum of 48 telephones (using up to 4 of the RY912 Relay Boards).
Features
- Can be used with either rotary or touch-tone service
- No monthly phone line rental fee
- Provides intercom (from lobby) for tenants that do not have outside telephone line service
- Distinctive double ring differentiates between visitor calls and incoming calls
- Connection for guard/concierge phone
- Multiple entrance capability
- Only two wires to interface with lobby equipment
- Call waiting feature
- DOC and FCC approved



















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