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The DB serial port signal protector is designed according to IEC and GB standards. It is divided into 9-pin and 15-pin D series (serial port) interfaces. It uses RS232, RS485/422, wired remote sensing, telemetry, remote control, etc. to use 9 pins and 25 pins. The D-type interface devices such as needles provide surge protection between line and line, convenient installation, no maintenance, and picosecond response speed, which can fully protect the equipment using the latest semiconductor devices


