A system for managing administration of prescribed medications to patients is disclosed. The apparatus can perform wireless communication with a slave flash apparatus which emits light in response to a second light emission start command received from the master flash apparatus. Also provided is a dry coating formed from the aqueous dispersion. The turbines are also used to charge batteries that may later be used to supply power to the billboard during periods when the turbines do not generate sufficient power or when one or more of the turbines are not operational. The self-test may be carried out on a bank of capacitors in rotation, discharging energy from one capacitor into the next such that all capacitors are charged and discharged from substantially a single power input. The basin is configured to guide debris entering the basin toward the channel and the channel is configured to channel debris to the outlet.