... detecting, power management, alarm display, alarm indication, relay outputs etc;² 8 simulate channels for 4-20mA detectors ... Intelligent system: easy zero calibration; free relay output;² 8 passive relay contact output, linkage programmer;2.2 SpecificationsInstallation ... .5 mm2Distance: ≤1000m composingThe system consists of one control panel, detectors (40pcs in maximum), and controller (27pcs ...