Industrial Scientific’s HS560 and HS560 with Display provide an extra margin of safety in areas where dangerous hydrogen sulfide levels may be present. The instrument’s compact design, rugged construction and reliable electrochemical sensor assures optimum performance with minimal maintenance. Housed in sturdy aluminum, the instrument comes equipped with a handy belt-clip or suspender-clip to permit hands-off operation. The sensor membrane provides protection from water, oil mist and dirt. Ideal for extreme temperature conditions, the HS560 is also dust and splash resistant.