Constructed with multi-layer high-temperature resistant FR-4 industrial PCB and fully enclosed electromagnetic shielding layout, each channel provides 1000V AC/DC galvanic isolation between field wiring terminals and internal logic circuits to suppress heavy electromagnetic interference caused by frequency converters, high-voltage switch cabinets and large rotating machinery in thermal power, petrochemical and metallurgical industrial sites. Every card undergoes rigorous factory testing, including 72-hour high-low temperature cyclic aging, full-channel signal consistency calibration, long-duration full-load bus burn-in and single-channel fault simulation. It supports single-slot hot-swappable installation without shutting down the entire DCS system, and integrates multi-layer hardware protection circuits: surge suppression, overvoltage, overcurrent, reverse polarity and short-circuit protection. Built-in independent LED diagnostic lights indicate power supply, bus communication and individual channel fault alarms for fast on-site troubleshooting, greatly improving the reliability of discrete signal acquisition and logic control output in industrial field environments.

Medium and super-large thermal power plant Ovation WDPF distributed control systems, multi-unit integrated petrochemical plant valve & pump discrete signal control cabinets, full-process equipment status monitoring stations for metallurgical factories, multi-station automatic control systems of large municipal wastewater treatment plants, whole-plant on-off signal acquisition racks for pulp & paper factories, multi-rack redundant central control rooms of traditional heavy industry, discrete logic remote monitoring automation platforms for energy and chemical continuous production lines, centralized DCS monitoring control systems for large distributed energy storage power stations