The present invention proposes a visual notification device in a fire-fighting system, comprising: an input end (210), a booster circuit (230, 830), an energy storage element (240), at least one flash element (260), and a flash control circuit (450), for causing energy in the energy storage element (240) to be applied to the at least one flash element (260) to make it flash; wherein at least one of the booster circuit, the at least one flash element and the flash control circuit is designed such that a residual voltage (Vr) across the energy storage element in each flash operation is greater than or equal to the input voltage (Vin). Using the notification device proposed by the present invention enables the occurrence of a repetitive inrush current to be suppressed effectively without the addition of a current-limiting circuit.