Viking Electronics ACA 1A Viking Automated Call Attendant Pens Option B) Can be used RV Option B) Can be used to add aftermarket video screen(s) to the vehicle and route video from the OEM radio (tweeter diameter opening is 2 7 8") and many electronic key systems with OPX or single line station capabilities Stores up to nine 16 digit speed dial numbers and one 32 digit number Processes approximately four calls per minute (stack as many units as necessary for larger capacity) Record announcements with a standard carbon handset or tape player Separate announcements for greeting menu selection Non volatile E2 memory no batteries required for memory retention during power failures Remote or local rrecording Bilingual capabilities allows menu selection in two languages Programmable ring delay Professionally greets and processes calls Compatible with Centrex