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The Auto-Select Tuning Personal Receiver, model PR-75, is an FM amplification system designed for use by individuals who are hard of hearing. When turned on by plugging its headphones into the audio output connector, this receiver automatically initiates the tuning sequence and makes decisions about the channel selection, tuning itself to the correct transmitter. If other transmissions need to be monitored, a manual, one-button tuning control causes the receiver to seek any other on-channel group frequency transmission in the 72-76 MegaHertz wide band channel group. A single LED (light-emitting diode) indicator system monitors all necessary receiver functions. The LED indicator blinks rapidly to indicate channel selection during the initial tuning process, glows continuously when a signal is being received, and flashes at a steady slow rate when that the receiver is no longer receiving a signal. Control features include a volume control with a 50 decibel (dB) range; automatic turn-on when headphone is plugged in and turn-off when headphone is removed; and one-button tuning reset. The receiver's antenna is integral with the headphone cable, so there is no external antenna. POWER: Uses two 1.5-volt double-A alkaline batteries or rechargeable NiMH (nickel-metal hydride) battery. Low batteries are indicated by a rapidly flashing LED and audible beeping. OPTIONS: Portable fast charger / storage case for 12 receivers, or single charger unit. DIMENSIONS (HxLxW): 1.625 x 2.5 x 3.25 inches. WARRANTY: One year.
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