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The adult turn on the light and forget to turn it off. If children see the light is on, which remain them of teacher’s word: energy conservation should start small, they will pull the switching line to turn off the light, which little movement will make a contribution to the global energy conservation.
Easy pull switch is combination of push switch and pull switch, in addition, the pull wire of easy pull switch can be installed or not. The pull wire is designed for children so that children can use the light switch, so its length of wire is up to the height of children.
University of south China
Heng Yang, China
Guo Hong Qiu,
University of south China
Da Peng Gao,
University of south China