Siren 1.Tone: Wail, Yelp, Hi-Lo,Air Horn 2. Voltage: DC12V or DC24V 3. Power : 100W 4. Impedance :8OHM Siren (amplifier,PA system)Model number:CJB194Voltage: DC12V or DC24VPower : 100WImpedance :8OHMTone: Wail, Yelp, Hi-Lo,Air HornTest request: -400C~+550C temperature ,anti-virbration ,prevent- water Siren CJB194