This stretchable food-freshness sensor module (100) is provided with a stretchable resin substrate (10), a food freshness sensor (20) capable of detecting the degree of freshness of food, a wireless communication unit (30) for transmitting freshness information data detected by the food freshness sensor (20) to an external device, and a battery (40) for supplying power to the food freshness sensor (20) and the wireless communication unit (30), wherein the food freshness sensor (20), the wireless communication unit (30), and the battery (40) are disposed on the stretchable resin substrate (10).
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