A charging system comprising a charger configured to charge a transmitter battery of a transmitter for transmitting data from a sensing device configured to be applied to an outer surface facing away from a wearer of an absorbent article for sensing moisture in the absorbent article through the outer surface, wherein the charging system is configured to receive the transmitter that is detachably attachable to the sensing device, and the one or more sensors, and the charging system, the charging system comprising a first light source, the charging system further being configured to emit light with the first light source for indicating at least one of whether the charging system is capable of charging a transmitter battery, whether the charging system is connected to power, whether a transmitter is attached, or whether the transmitter is charging,
- wherein the sensing device is configured to electrically connect with the transmitter via one or more electrical connections provided on each of the sensing device and the transmitter, and
- wherein the charging system is configured to electrically connect with the transmitter via one or more electrical connections provided on the charger that mate with the one or more electrical connections provided on the transmitter,
- wherein the sensing device comprises a substrate and one or more sensors configured to sense a characteristic of moisture in the absorbent article,
- wherein a surface of the substrate faces an exterior surface of the absorbent article and that at least one of the one or more sensors presses against the exterior surface of the absorbent article, and
- wherein the sensing device is further configured to sense one or both of a location and a position of the wearer of the absorbent article.