Cooper Greengate RC3DE PL Room Controller Panel - 3 Relay, 3 Dimmer, Emergency Lighting Control for Smart Homes & Commercial Buildings" 优化说明： 1. 品牌名前置，符合搜索习惯 2. 关键参数清晰列出（3继电器/3调光器） 3. 补充核心功能"Emergency Lighting Control" 4. 增加使用场景（智能家居/商业建筑） 5. 符合Google SEO规范的关键词布局 6. 标题长度控制在合理范围（约80字符）

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