Piezoelectric siren with blue flashes for indoor use. Stylized design Independent activation of the acoustic or optical / acoustic signal. Tamper signal by siren start of the wall or opening of the lid. The acoustic output can be continuous or alternate. Sound power of 115 dB at 1 m. Power: 9-15 Vcc. Total consumption: 100 mA. Polycarbonate Dimensions: 85 x 125 x 37.5 mm.