( POWER ) DC Power Consumption 450mW Max at 9V DC Current Draw 48mA Voltage Range 7.5VDC ? 12VDC Power Supply 9VDC with 100mA minimum *IMPORTANT: polarity Pos (+) on outside, Gnd (-) on center 9V Battery Life 11 hours Signal to Noise 90dB, Unweighted
( PHYSICAL CHARACTERISTICS ) Weight 427g SIZE 127mm (L) x 82.6mm (W) x 50.8mm (D)