长明灯不再长明石景山区政府机关办公楼和生活服务楼的楼道、卫生间等处照明灯是多年来的“长明灯”，造成极大的浪费，同时由于灯泡经常损坏，给维修工作带来很大负担，虽采取多种办法但收效甚微。得知北京海淀香山节能电器厂生产的军达牌声光控延时开关，性能稳定节电明... Changming lights no longer Changming Jingshan District government agencies office buildings and living services floor corridors, toilets and other office lighting is the “long light” over the years, causing great waste, and because of frequent damage to the bulb, to bring great maintenance work Burden, although a variety of ways but with little success. Learned that Beijing Haidian Xiangshan energy-saving electrical plant production Tatou sound and light control delay switch, stable performance ...