• Operating Voltage: 11 to 14 Volts DC.
• Current Draw: .2 to 2 Amps, (depends on volume setting & speaker load).
• Sound Level: 120 db @ 1 meter, 14 vdc, with one 8 ohm speaker.
• Max. Speaker Loading: 4 Ohms.
• Max. Message Length: 2 min. per channel in voice mode or 4 min. per 2 channels in siren mode.
• Pulsing Input: 1/2 to 2 Second Pulse, 50% duty cycle.
• Size: 3" x 5" x 1.25" (76 x 127 x 32mm).