This product is designed to monitor the temperature and humidity in the storage environment of wooden musical instruments such as guitars. Its form and function are designed around the special structure of guitars and the requirements of storage and management. The biggest challenge was that the sensor had to be attached inside the guitar's cavity firmly enough for it not to fall off during transportation, but also convenient enough for users to detach at any time; it also had to be universally compatible with all guitar brands and models. After trying dozens of prototypes, we finally found the best solution.