Low profile piezoelectric siren, for indoor use. Certified for EN50131 Grade 2 installations. Sound power of 108 dB at 1 m. Incorporates box and wall tamper. Power supply: 10 to 14.2 Vdc. Consumption in alarm: 120 mA at 12 Vdc. Dimensions: 155 x 114 x 44 mm. Operating temperature: -25 to 55ºC. White ABS plastic box.