Mini Audible Alarm The Siren Marine mini audible alarm produces a powerful sweeping siren sound. The alarm can be connected to one of the outputs on the Main Device, which will allow it to be turned on and off from the "switching" section of the Siren Connected Boat App. It can also sync to specific inputs in the Siren Connected Boat App.Specifications: Resonant Frequency (KHz): 2.5 4.5; Operating Voltage (Vdc): 5 15; Rated Voltage (Vdc): 12; Current Consumption (mA/max.): 150 at Rated Voltage; Sound Pressure Level (dB/min.): 105 at 100cm at Rated Voltage; Tone/Pulse Rate (Hz): Sweep; Operating Temperature (C): -20 +70; Storage Temperature (C): -30 +80; Housing: ABS 777D plastic resin (Color: Black); Leading Wire: 24 AWG; Weight (Gram): 26.2; - cis2:mm5mnJlm -