Electronic Siren (490-0488F) Specifications Faxback Doc. # 6596 Horn-Speaker...........................ABS plastic, 5 1/4" (13 cm) diameter Power Rating:...............................................6 Watts nominal Impedance:...........................................................8 ohms Operating Voltage:.......................9-16.5 volts DC (12 volts nominal) Current Drain:..................................................550mA (max) Tone:...............................Rise-fall or steady (wiring selectable) Output Level:........................................105+/-5 dBA at 1 meter Total Weight:........................................................3.5 oz (LB/all-05/18/95)