Product Description

Hand operated alarm is an audible warning device in order to indicate a dangerous or emergency situation and designed to provide effective warning in applications where there is no power supply , such as:Civil defence. Camp sites. Mountain rescue. Frontier sentry and coast guard warning. Due to light weight the sirens can be easily transported to remote locations and folded up to a small size for easy of carrying, furthermore the price is quite cheap, so this kind of alarms are welcomed by customer The character of hand operated siren list as follow ***** power supply required ***** and lightweight for portability 3.Powerful low frequency sound 4.Universally recognised signal 5.Shutter mechanism to provide a choice of signals