A wireless sensor assembly comprising a housing, an external sensor, a wireless power source, and one or more electronics, characterized in that: the housing includes an upper portion and a lower portion connected to the upper portion, and defines an interior space between the lower portion and the upper portion, wherein: the upper portion has a first sidewall and the lower portion has a second sidewall opposed to the first sidewall to provide opposing ends (18, 20) of the housing, the upper portion and the lower portion define a sealing interface that is angled and extends to the first sidewall of the upper portion and the second sidewall of the lower portion, and one of the opposing ends (18, 20) defines a first aperture to receive the external sensor; the wireless power source mounted within the housing; and the one or more electronics mounted within the housing and configured to receive power from the wireless power source and to be in electrical communication with the external sensor, the one or more electronics comprising: a wireless communication component; and a microprocessor configured to execute a firmware, wherein the firmware is configured to change a rate of data transmittal from the wireless communication component to an external computing device such that the wireless communication component has a power consumption less than 0.5 mW, wherein the one or more electronics are powered exclusively by the wireless power source and the wireless sensor assembly defines a volume less than 32.7741cm 3. the housing includes an upper portion and a lower portion connected to the upper portion, and defines an interior space between the lower portion and the upper portion, wherein: the upper portion has a first sidewall and the lower portion has a second sidewall opposed to the first sidewall to provide opposing ends (18, 20) of the housing, the upper portion and the lower portion define a sealing interface that is angled and extends to the first sidewall of the upper portion and the second sidewall of the lower portion, and one of the opposing ends (18, 20) defines a first aperture to receive the external sensor; the upper portion has a first sidewall and the lower portion has a second sidewall opposed to the first sidewall to provide opposing ends (18, 20) of the housing, the upper portion and the lower portion define a sealing interface that is angled and extends to the first sidewall of the upper portion and the second sidewall of the lower portion, and one of the opposing ends (18, 20) defines a first aperture to receive the external sensor; the wireless power source mounted within the housing; and the one or more electronics mounted within the housing and configured to receive power from the wireless power source and to be in electrical communication with the external sensor, the one or more electronics comprising: a wireless communication component; and a microprocessor configured to execute a firmware, wherein the firmware is configured to change a rate of data transmittal from the wireless communication component to an external computing device such that the wireless communication component has a power consumption less than 0.5 mW, a wireless communication component; and a microprocessor configured to execute a firmware, wherein the firmware is configured to change a rate of data transmittal from the wireless communication component to an external computing device such that the wireless communication component has a power consumption less than 0.5 mW,