DURÁN co and no₂ gas leak control panel durpark mini, 1 non-expandable zone. up to 16 detectors, simultaneous detection of co and no₂ in a loop., 1 non-expandable zone up to 16 detectors per zone., 3-wire communication. individual monitoring of each detector., lcd display, dual fan speed and volt-free relay outputs., high accuracy with electrochemical sensors and automatic gas-free calibration