I'm hoping The Cafe is the right place for this question.
For everyone that is knowledgable about AC and DC power, I have a baby monitor that is scking the life out of all my batteries. I'm tired of buying a bunch of batteries for this thing. It as a DC plug in the side, but I have no idea what DC adaptor to buy for it. I attached two pics of the baby monitor.
The plug says "DC IN 9V" then has a symbol of a negative to a positive sign.