Select Home Depot Stores: Airthings Wave Radon Battery Operated Smart Radon Detector $28.05 (Valid In-Store Only)

My local Home Depot (Dublin, OH - Sawmill #3831) is offering Airthings Wave Smart Radon detectors marked down to $28.03 from the original retail price of $139.00. This specific Airthings model (Wave 2591) apparently has long term tracking capability for radon, temperature, and humidity and is a Bluetooth device. Reviews are mostly positive.