▎ 摘　　要

NOVELTY - The utility model claims a voice alarm of the graphene shell, comprising a protection box and the main protective layer, protecting box is three-layer, the first layer is resin, the second layer is graphene, the third layer is resin, graphene with enhanced effect on resin, graphene and resin composite, may be by toughness of the graphene, it has ultra-thin and ultra-soft and ultra-light characteristics, make the appliance element of the internal protective layer has good protective effect, the bottom is mounted with a buffer device of the protective layer, when the falling of the voice alarm; graphene has first energy-absorbing, spring buffer device in the energy absorption chamber as micro-move up and down, to the second energy-absorbing, double protection, the original mounting electromagnetic shielding in front of the loudspeaker, the alarm is triggered to send out alarm, the lawless person cannot pass through the sound of outside electromagnetic interference alarm, such that people can fast discovery of an emergency condition, and the camera of the subject face take evidence of crime.