Hand operated siren LK-120 is designed to provide effective warning in applications where there is no power supply. Powered by rotation the handle,this model has a plate to shut off the sound once up to speed giving it the ability to produce different tones Robust and compact,the siren can be easily transported to remote locations and folds up to a small size for ease of handling Features : no power supply required robust and compact for portability powerful low frequency sound universally recognized signal Shutter mechanism to provide a choice of signals: continuous and warble Application: Camp site, civil defence, mountain rescue, coast guard warning, quarries/mining Key words：LK-120 manual alarm Signal warning sirens
