| 摘要 |
A lighting device, useable for example as a nightlight, comprises (a) first connection means for connection to an existing ("primary") light fitting, (b) second connection means for connection to a primary light source, (c) an integrated secondary light source and (d) electrical and/or electronic controls arranged such that both the integrated secondary light source and a primary light source connected to the device via the second connection means can be operated using an existing primary switch associated with the primary light fitting. The device may include a light sensor, allowing its operation to depend on ambient light levels. |
