Enjoy high quality digital programming with this Tivax DT-01 indoor DTV/TV antenna, Enjoy high quality pictures with the amplified function even when the power is off, Works with AC power (AC adapter) and 6 AA batteries (with battery holder), General Spec:, Indoor amplified antenna DT-01, Frequency 47-890MHZ, Gain 10-22dB, Main power supply 110/220V AC-50/60Hz, Output impedance 75, External power supply 9V DC-100mA, Battery holder DC-09A: Use 6 AA batteries, Output Power: 9V Accessories:, Power adapter (9V/2A, 100V-240V), Instruction Manual SKU: DDDSD538251