Wall Mounted H2 Gas Detector with high density housing, high quality probe. Two styles (basic version, high-end version) are optional. Built-in hardcover probe, accurate measurement. It can be used with Jingxun cloud platform at the same time to view monitoring data anytime, anywhere. It can be used in industrial plants, traffic tunnels, energy and electricity, petroleum and petrochemicals, greenhouses, fruit tree gardens and other fields.