Description : 12 Volt Security Systems Alarm Strobe Light Siren This alarm can be used alone (220V switched on alarm)， or infrared wireless burglar alarm supporting the use . Specifications : Wire : two buses (length 15 cm) Installation : Exposed Wall Working temperature : -10 \u2103 ~ +55 \u2103 Relative humidity : !#!amp!*!le; 95% Weight : about 150g Color : red + white Siren : 105 dB \/ 500mA Rated voltage : 12VDC reted Current : !#!amp!*!le; 300mA Buzzer rod : !#!amp!*!ge; 108db\/30cm Sound pressure index : !#!amp!*!ge; 110dB\/300mm Flashing frequency : 150 times \/ min Size : 122 x 73 x 45mm Package included : 1 x Security Systems Alarm 2 x Screws Details pictures :