LSP’s data and signal surge protectors are trusted by over 1,200 companies, including renowned appliance brands and industrial customers. Manufactured with premium materials and advanced technology, these data surge protection devices provide stable and reliable surge protection for solar PV monitoring systems, industrial control signals, telecom networks, and BMS communication interfaces. Our solutions ensure uninterrupted data transmission and long-term system reliability.
Check out our range of data and signal surge protection devices, including FRD2, FRD4, SRD2, and RJ45 Ethernet series. Safeguard your RS232, RS485, and RS422 data lines as well as network systems, ensuring reliable signal surge protection and uninterrupted operation.











Dual-Stage High-Energy Protection – Combines GDTs and avalanche diodes for robust data surge protection, featuring a modular, low-loss structure that preserves signal quality and simplifies maintenance.
Modular Plug-in Maintenance Design – Adopts a plug-in module/base structure that enables quick replacement without rewiring, ensuring uninterrupted telecom surge protection and continuous system operation.




Our reliable surge protection solutions — proven by real customer success.
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