The Extech RH200W Hygrometer, manufactured by Extech, measures relative humidity with a range of 1% to 99%. It features an indoor air humidity meter for detecting building moisture and alerting to mould risks. Typically used as a mould detector, it is essential for maintaining healthy indoor environments. https://elecena.pl/product/28942449/extech-rh200w-multi-channel-hygrometer-easy-read-lcd-30m-range-min-max 2025-06-12 https://elecena.pl/product/28942449/extech-rh200w-multi-channel-hygrometer-easy-read-lcd-30m-range-min-max 2026-04-13