Features: This handheld radon air transducer utilizes advanced transducer technology to quickly and accurately measure radon levels, ensuring security in your existing working conditions. Thin and simple carry, this transducer is ideal for use home, in workplace, otherwise outside, allowing you to observe radon levels constantly, everywhere. Precise display and simple action buttons, the inherent connection creates it simple obtain live data and conduct continuous observing. Produced with excellent materials and workmanship, this transducer ensures stable execution and durability in various conditions, suitable everyone radon detection demands. The simple operational and clear button settings make it effortless for even novice users to get starting Specifications: Component:Metal Size:Approx.161x77mm/6.34x3.03inch Accuracy: short-term 7 day < 20% Long-term < 10% after 1 month Package Includes: 1 Set Portable Radon Detector note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.