教室用自动照明开关

An Automatic Lighting Switch for Classrooms

介绍一种利用门与光双重控制的自动照明开关。这种开关能在延时期间内多次触发，克服了某些光控开关只能触发一次的缺点， 使调整和延长照明时间成为可能， 从而解决了学校教室中的 “长明灯”问题。经现场试验表明， 它具有功耗低， 体积小， 安全可靠、经济实用， 安装使用方便等优点，

Recommends an automatic lighting switch in twofold controls by between the door and light. This switch can touch off for many times and overcomes a shortcoming as some light controlled switches only can touch off for once during the delay-time. Thus, it will turn into possible that we want to regulate and lengthen lighting time. Thereby,we have solved a problem of the 'long lighting-lamp' in the classrooms of the school.