A luminaire (120-k) for illumination of a space in a lighting arrangement comprising one or more luminaries, the luminaire (120-k) comprising at least one light source (121-k) and a lighting control device (110-k) for controlling light output from the at least one light source, the lighting control device (110-k) comprising: a control means for controlling light output from the at least one light source (121-k) in accordance with a predefined lighting control logic; and characterised in that the lighting control device further comprises: a communication means for wireless communication with other luminaires of the lighting arrangement, the communication means arranged to receive status indications from the other luminaires of the lighting arrangement, wherein each status indication is descriptive of an operating characteristic of a respective one of the other luminaires of the lighting arrangement and wherein said status indications comprise respective light intensity indications that indicate light intensity level applied for the light output in a respective one of the other luminaires of the lighting arrangement; and a monitoring means for monitoring operation of the luminaire (120-k) and/or respective operation of one or more other luminaires of the lighting arrangement based on a light sensor signal that is descriptive of observed light level in said space, the monitoring means arranged to carry out a monitoring procedure comprising: deriving an expected light level characteristic based on information received at the lighting control device (110-k), wherein said information comprises a history of observed light levels in said space and at least one of the following: a history of light intensity levels applied for the at least one light source (121-k), a history of status indications received from the other luminaires of the lighting arrangement, deriving a current observed light level characteristic based on the light sensor signal, determining whether the current observed light level characteristic matches the expected light level characteristic, and detecting a malfunction in the lighting arrangement in response to the current observed light level characteristic failing to match the expected light level characteristic. a control means for controlling light output from the at least one light source (121-k) in accordance with a predefined lighting control logic; and characterised in that the lighting control device further comprises: a communication means for wireless communication with other luminaires of the lighting arrangement, the communication means arranged to receive status indications from the other luminaires of the lighting arrangement, wherein each status indication is descriptive of an operating characteristic of a respective one of the other luminaires of the lighting arrangement and wherein said status indications comprise respective light intensity indications that indicate light intensity level applied for the light output in a respective one of the other luminaires of the lighting arrangement; and a monitoring means for monitoring operation of the luminaire (120-k) and/or respective operation of one or more other luminaires of the lighting arrangement based on a light sensor signal that is descriptive of observed light level in said space, the monitoring means arranged to carry out a monitoring procedure comprising: deriving an expected light level characteristic based on information received at the lighting control device (110-k), wherein said information comprises a history of observed light levels in said space and at least one of the following: a history of light intensity levels applied for the at least one light source (121-k), a history of status indications received from the other luminaires of the lighting arrangement, deriving a current observed light level characteristic based on the light sensor signal, determining whether the current observed light level characteristic matches the expected light level characteristic, and detecting a malfunction in the lighting arrangement in response to the current observed light level characteristic failing to match the expected light level characteristic. deriving an expected light level characteristic based on information received at the lighting control device (110-k), wherein said information comprises a history of observed light levels in said space and at least one of the following: a history of light intensity levels applied for the at least one light source (121-k), a history of status indications received from the other luminaires of the lighting arrangement, deriving a current observed light level characteristic based on the light sensor signal, determining whether the current observed light level characteristic matches the expected light level characteristic, and detecting a malfunction in the lighting arrangement in response to the current observed light level characteristic failing to match the expected light level characteristic.