Faith is good, measuring is proof. The small device impresses with its flawless performance. Some microwave devices have leaks because such openable Faraday cage can never close a hundred-percent. One should satisfy themselves and locate the leaks with this device. Then you can steer clear of such sites, or move away from where the safe distance. A radiation intensity decreases with the square of the distance, so it is very easy and efficitively to avoid any risk (the danger would anyway only a scarcely wahrnehbare heating their aqueous tissue). With the Trotec BR15 You can measure the changes in the radiation intensity at any distance.