What does umax astra 3400

who cares if it is the proper voltage,amps and plug. . you need a wall wart , the plastic box with two flat blades sticking out that 12volts DC center positive ,700 milliampsfor the non negatine scanner and 1 amp(1000 milliamps) for thr negative scanneer model an AC/DC adapter look around at 2nd hand stores they usually have a selestion or order online from electronics supplier