USP Automatic VOICE / PAGER Dialers w/ Verification 
USP - United Security Products USP AVD-45B Automatic Voice Dialer AVD45B

1 separate voice message alarm zone programmable in any language. Replaces the ADV-45A

Calls up to 4 telephones, pagers or cell phones.

Outgoing message programmable in any language. Listen in verification allows two way voice communication. EEPROM memory retains programmed phone numbers and voice messages in the event of power failure. Automatically redials busy and/or unanswered numbers. 9v alkaline battery backup included. Universal dial tone works with any phone (including cellular). Answering machine will not activate unit.