W Audio UHF User Manual - page 7
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Specifications
Specifications:
Effective range:
50M (150ft) under optimal conditions
NOTE: Actual working range depends on RF signal absorption
Audio Frequency Response:
Typically 50Hz to 15,000Hz, ÷3dB
Modulation: FM
Audio Bandwidth: 40Hz to 20kHz
THD: typ,1%
Power Requirements: 9V DC 150mA
Transmitter Current: 80mA
Receiver Power Supply: 2 x 1.5V AA size battery
Transmitter Power Supply: 1 x 1.5V AAA size battery
Dimensions: 130 x 80 x 35mm - Receiver
78 x 23mm - Transmitter
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