Abstract: A lamp includes a light source in a top of a housing, the light source including a driver, a light emitting member electrically connected to the driver, and a dimming controller electrically connected to the driver wherein the driver is configured to activate the light emitting member after being activated by a signal sent from the dimming controller; and an electro-optical sensor in the top of the housing and electrically connected to the dimming controller wherein light emitted by the light emitting member is reflected to the electro-optical sensor, and the electro-optical sensor sends the sensed light to the dimming controller. The dimming controller compares intensity of the sensed light with intensity of the light emitted by the light emitting member, and the driver either decreases the intensity of the light output or increases same based on the comparison.

Abstract: A lamp set with remotely group setting function comprising a plurality of lamp assemblies and a remote controller; each lamp assembly including a casing, a signal receiver; a lamp body, a base, a circuit assembly, a power device and a group switch set; the casing for receiving element of the lamp assembly; the function group switches having a plurality of buttons for selecting the package signals sent from the remote controller; the circuit assembly of the lamp assembly being electrically connected to the lamp body, the power device, the receiver, and the group switch set. The circuit assembly serving to read package signals received from the receiver; the group switch set determining whether it is necessary to process the received package signals; if necessary, the circuit assembly will send driving signals to the lamp body to has to present different light effects according to the signals.