Specification :
Output: 30 Watts
Input Voltage: 12.8 V DC
Input Current: @ 15 V DC @ 5.5 Ohms 2 AMPS Max
Input Fuse: 5 Amps
Operating Temperature: -22 F. to +140 F
Storage Temperature: -40 F to +158 F
The Siren/ Speaker Self contained, nothing else needed! This great unit has the siren amplifier and speaker all built into one compact package. Perfect for cars, motorcycles,ATV's,boats,watercraft, anything! Comes standard with 10 Siren tones including airhorn that can be sounded at the same time as siren tones. Internal Input fuse. switches for changing siren functions. Siren tones can be sounded via non-included on/off and momentary switches.