85dB to 3m Outdoor sounder, self-powered with internal metal protection and blue flahs. White polycarbonate. Alarm duration:3, 5, 10 or 20 minutes. Tamper output. Self-power possibility with MV1270 (Lead battery of 12V/7.2Ah not included). Power supply: 12VDC. Dimensions: 210 x 300 x 87 mm. Security grade 3 certified.