This is a general purpose siren which features two different tones. Connect it to a Dakota Alert 4000 Plus base station and have the siren go off when a sensor is tripped.
 
**this siren is not rated for outdoor use**
 
Specifications:
power: 30W
sound pressure level: 118dB at 1 meter
rated voltage: 12V
rated current: 1200mA
dimensions:  9 x 8.7 x 4.6"