A container system, comprising: a container defining an interior space that is arranged to receive cargo; and a monitoring system; the monitoring system comprising: a power transmitter disposed in the interior space of the container; and a sensor tag disposed on the cargo, the sensor tag being arranged to provide a signal indicative of a condition of at least one of the cargo and interior space responsive to receiving power from the power transmitter; wherein the sensor tag includes: a power receiver that is arranged to receive power from the power transmitter; a sensor that is arranged to monitor the condition of at least one of the cargo and interior space and provide the signal to the power transmitter, wherein the sensor is powered by the received power; and an antenna, wherein the power receiver is arranged to receive power from the power transmitter through the antenna; characterized in that: the sensor is in communication with at least one of the antenna and the power receiver, the sensor being arranged to provide the signal indicative of a condition of at least one of the cargo and interior space, responsive to receiving power from the power receiver; and the sensor tag includes: an energy storage device arranged to store power that is received from the power transmitter; and a controller programmed to manage power between the energy storage device and the sensor. a container defining an interior space that is arranged to receive cargo; and a monitoring system; the monitoring system comprising: a power transmitter disposed in the interior space of the container; and a sensor tag disposed on the cargo, the sensor tag being arranged to provide a signal indicative of a condition of at least one of the cargo and interior space responsive to receiving power from the power transmitter; wherein the sensor tag includes: a power receiver that is arranged to receive power from the power transmitter; a sensor that is arranged to monitor the condition of at least one of the cargo and interior space and provide the signal to the power transmitter, wherein the sensor is powered by the received power; and an antenna, wherein the power receiver is arranged to receive power from the power transmitter through the antenna; characterized in that: the sensor is in communication with at least one of the antenna and the power receiver, the sensor being arranged to provide the signal indicative of a condition of at least one of the cargo and interior space, responsive to receiving power from the power receiver; and the sensor tag includes: an energy storage device arranged to store power that is received from the power transmitter; and a controller programmed to manage power between the energy storage device and the sensor. a power transmitter disposed in the interior space of the container; and a sensor tag disposed on the cargo, the sensor tag being arranged to provide a signal indicative of a condition of at least one of the cargo and interior space responsive to receiving power from the power transmitter; wherein the sensor tag includes: a power receiver that is arranged to receive power from the power transmitter; a sensor that is arranged to monitor the condition of at least one of the cargo and interior space and provide the signal to the power transmitter, wherein the sensor is powered by the received power; and an antenna, wherein the power receiver is arranged to receive power from the power transmitter through the antenna; characterized in that: the sensor is in communication with at least one of the antenna and the power receiver, the sensor being arranged to provide the signal indicative of a condition of at least one of the cargo and interior space, responsive to receiving power from the power receiver; and the sensor tag includes: an energy storage device arranged to store power that is received from the power transmitter; and a controller programmed to manage power between the energy storage device and the sensor. a power receiver that is arranged to receive power from the power transmitter; a sensor that is arranged to monitor the condition of at least one of the cargo and interior space and provide the signal to the power transmitter, wherein the sensor is powered by the received power; and an antenna, wherein the power receiver is arranged to receive power from the power transmitter through the antenna; characterized in that: the sensor is in communication with at least one of the antenna and the power receiver, the sensor being arranged to provide the signal indicative of a condition of at least one of the cargo and interior space, responsive to receiving power from the power receiver; and the sensor tag includes: an energy storage device arranged to store power that is received from the power transmitter; and a controller programmed to manage power between the energy storage device and the sensor. the sensor is in communication with at least one of the antenna and the power receiver, the sensor being arranged to provide the signal indicative of a condition of at least one of the cargo and interior space, responsive to receiving power from the power receiver; and the sensor tag includes: an energy storage device arranged to store power that is received from the power transmitter; and a controller programmed to manage power between the energy storage device and the sensor. an energy storage device arranged to store power that is received from the power transmitter; and a controller programmed to manage power between the energy storage device and the sensor.