I thought it was a set but it ended up being just one. The promotional photo was misleading. It works perfectly and there are no questions about the quality of the goods. I just thought I'm getting more than I got.
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
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Portable Handheld Manometer π for Accurate Pressure Differential Measurement
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π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
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