Environmental Detector

[0013]FIG. 1 shows a block diagram of an environmental sensor device 1 and system 2 for detecting environmental conditions within a pharmaceutical product package. The sensor device 1 is a stand alone device with a humidity sensor 3, a temperature sensor 4, a control circuit 5, a memory circuit 6, a power source 7 and a communications interface 8. Further, the sensor device 1 has a housing 9 defining its outer dimensions that allows the sensor device 1 to fit inside a pharmaceutical product package. Pharmaceutical product packages are available in a large variation of sizes and shapes, therefore the dimensions of the sensor device are as small as possible, while still preserving the specified functionality. According to one embodiment, the sensor device is formed as a cylinder with a diameter of 25 mm or less and a length of 50 mm or less. According to one embodiment, one or more of the sensors and circuits are provided in an integrated circuit performing several functions. In fact, al