Aprelco UL Listed AC Adapter Compatible with Viking Electronics Digital Voice Announcer DVA-2W DVA-2WA DVA-500 DVA-500A DVA-1002 DVA-1003 DVA-1003A DVA-1003B DVA-3003 DVJ-500 E-1600-BLT FAXM-1

PwrON is specializing in the production of high quality and economical replacement Power supply for laptop, tablet, phones and other electrical appliances.
Products manufactured with the highest quality materials and include multiple smart features safeguarding against IV - incorrect voltage, SC - short circuit, IO - internal overheating . Chargers are certificated with CE FCC etc.

If you don't know whether the machine can use this adapter, you can view your original adapter's output parameters (voltage, current) whether conform to. if lost the original adapter, you can check the parameters at the bottom of the computer, or your illustrations of the machines.