Heavy Duty Hand Operated Siren The heavy duty hand operated siren is designed to provide effective warning in applications where there is no power supply such as camp sites, civil defence, mountain rescue and coast guard warning. Powered by rotating the handle, this siren has a plate to shut off the sound once up to speed giving it the ability to produce three 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. Applications - Camp sites; civil defence; mountain rescue; coast guard warning; quarries/ mining No power supply required Robust and compact for portability Powerful low frequency sound Universally recognised signal Shutter mechanism to provide three or more signals 120 dB @ 1 metre Height: 84cm Width: 37cm Depth: 48cm Height: 60cm Width: 37cm Depth: 48cm Audibility (tone) at 1m (typical) Rating: Continuous Frequency: 400Hz Nominal (Dependent on Rotation Speed) Signalling Solutions