... for 150dB. With Timer OFF and ON. New model of CP-391.2012 again grand launched new "Desert machine", ... supply, power is more powerful, conform to the trend of market demand.Support external two loud speakers, maximum can support ... , suitable for long-term use in the outdoor environment of high temperature.Sealed design, use in the desert areas, ... Timer OFF and ON,with 2 loud speakers of 50W and 150dB.