Abstract: An alarm and control device is provided for a camera system including a camera which, when operated, produces a corresponding synchronizing control pulse; one or more flash or strobe units; and one or more flash sensors which sense the operating state of an associated strobe unit and produce a corresponding output signal. The device includes first and second inputs for receiving, respectively, input signals related to the synchronizing pulses produced by the camera and input signals related to the output signals from a flash sensor, and first and second signal conditioning circuits for conditioning the signals received at the first and second inputs. An output circuit, connected to the strobe unit and to the first signal conditioning circuit, produces an output signal for activating the associated strobe responsive to receipt by the first input of an input signal as aforesaid.