hand operated sirens-lk120 PERFORMANCE PARAMETER: Sound Rating:120±2dB(A) @1MOutput Frequency:600±20HzEffective Range : 1.5km diameterNet Weight: 9KgCarton Size:45x37x58CM DESCRIPTION: LK-120 is designed to provide effective warnning in applications where there is no power supply such as:Civil defence.Camp sites.Mountain rescue.Frontier sentry and coast guard warning.As lightweight, it can be easily transported to remote locations and folds up to a small size for ease of handling. DIMENSION: