Times linkable led linear light are using Times private moulding(design,housing,lens,power cable & connector) with unique features: 1. Unique Design: 5 beam angles are available: 30°/60°/90°/ Asymmetric / Double Asymmetric. This 5 lens can be used in one fixture ! I.e, if you have 1pc led linear light, you can change the lens by yourself easily, then you can get 5 different beam angles and light effects! Is it surprised? With this 5 lens, you can have wider applications, saving lab costs and time greatly! 2. Linkable: You can seamlessly connect 2 fixtures easily by our connector, even a child can make it well, no any tools required. 3. Easy and quick mounting optional: suspending and surface mounted(Seamlessly) 4 .Dimmable(0-10V, DALI) 5. Emergency battery back up.