SY-100A Exercise Alarm& 1. Hand operated alarm is a type of hand operated sounder that does not require power support, and its name varies depending on the location (hand operated alarm, manual alarm, manual alarm, portable alarm, no power alarm)& 2. The manual alarm does not require power support and provides an effective alarm signal by shaking the handle to provide power. The size of the sound depends on the speed at which the handle is shaken. Set up a shutter mechanism in the sound window to select the strength of sound signals, quickly close the sound window, block sound, and generate different signals& 3. It includes a handle, a gear increase mechanism, a clutch slider, a fixed wheel, a ringing wheel, a sound window cover, a gear box, and a housing frame. The handle is connected to the driving shaft of the gear increase mechanism, the output shaft of the gear increase mechanism is connected to the clutch slider through a pin, and the clutch slider is connected to the flange friction transmission of the impeller. Its purpose is to provide power without the need for power support, and to make the alarm sound an alarm signal by shaking the handle. The sound level depends on the hand cranking speed. SY-100A Exercise Alarm
 & nbsp;      It can be divided into fixed hand alarm and portable hand alarm in terms of style and purpose. 2、 Scope and Use of Application& 1. The hand operated alarm is lightweight, easy to carry, and can be disassembled and stacked. When the handle is manually operated, an alarm sound will sound. After the Wenchuan earthquake and during the treatment of the barrier lake, this type of manual alarm played a positive role because power and traffic were blocked, and other mobile alarms could not enter the alarm area. The lightweight and portable manual alarm became a good alarm. After the Zhouqu mudslide, in order to timely transfer people and property, and minimize the losses caused by natural disasters. In the harsh environment of that time, hand cranked alarms without power support also became the preferred alarm& 2. Widely used in factories, schools, fire brigades, flood control, natural disasters, open-air military camps, air defense, mountain rescue and coastal outposts, forest fire prevention, flood control, firefighting, imprisonment, reservoirs, ships, mines, plains, pastures, gas stations, airports, forest farms, hotels, and other emergency venues. Can effectively provide timely warning during the incident, reduce people's property damage and casualties& 3. Say goodbye to the ancient history of knocking on iron pots and shouting loudly about dangerous situations. When there is a communication interruption during forest fire prevention, disaster relief, and outdoor camping, the hand cranked alarm allows you to find the other party in time! When a dangerous situation occurs in a building, once the intelligent system malfunctions, having a hand operated alarm can also solve the problem. It can emit a danger alarm of 110 decibels or more, timely notify the people inside the building of the danger, and quickly evacuate