The S-series signal SPD is mainly used to protect field equipment such as transmitters, switches, frequency signals, communication devices, thermal resistors, thermocouples, etc. connected in a two-wire or three wire system, as well as control room safety barriers, I/O, DCS, PLC and other equipment, from lightning surge surge surge surge voltage or operating overvoltage damage

For the lightning protection scheme of industrial control low-voltage signals, the central control instrument has launched the S-Pro series surge protector with stronger functionality and professionalism after the basic S-series surge protector, including 5V/24V signal system, 24VDC power system, etc.