| (b) If there are more than one light source module(s) used in the housing for a device, light source module(s) having different characteristics cannot be interchanged within the same lamp housing; | a0c0 |
| (b) If there are more than one light source module(s) used in the housing for a device, light source module(s) having different characteristics cannot be interchanged within the same lamp housing; | a0c0 |