Quad Gas® II Controller
Housed in a rugged, NEMA 4X enclosure, this microprocessor-based system links with up to four remote gas sensors. The large, four-digit LED display shows gas concentration and features four warning relays with one per sensor. The model also comes with four discrete alarm relays. Warning, alarm set-points and full-scale range of the sensor are set at the user-friendly keyboard, while a DC battery connection provides backup stability.