Macurco OX-12 Provides oxygen detection and automatic ventilation control in wastewater treatment plants, factories & other commercial applications. Can be used as a stand-alone detector and controller and as an analog transducer for use with the DVP-120 and other systems – ETL Listed. Macurco OX-12 fixed gas detectors provide life-saving solutions aimed to protect people and property. These fixed gas detectors are designed for low level detection, mitigation, and notification. Let these detectors do the work for you by shutting off valves, turning on fans, engaging horns and strobes, and provide notification to fire panels and building automation systems when gases reach key limits.