Panel Instrument
We produce signal conditioning and interface hardware for industrial control panels. Sertel fiber optic converters and isolators send data and process signals across long distances and noisy environments. This equipment prevents data loss, signal drift, and hardware damage in facilities that have difficult earthing conditions.
Panel Instrument Products

T-300-FO/RS485 | Industrial RS-485 to FO Converter
FO Converter
Convert RS485 signals to fibre-optic links for industrial control networks, with optical diagnostics and isolated communication.
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Panel Instrument
RS485 Isolator
Sertel RS-485 Isolator T-485-ISO-300, galvanically isolated RS485 signal module with 24 V DC terminals
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Signal Conditioning & Isolation
Loop Powered DC Current Isolator
A loop-powered DC current isolator for separating 4-20 mA transmitter signals before they reach a PLC, DCS or data logger, removing ground-loop interference without a separate power supply.
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Used across control panels, automation systems and industrial signal networks.
FAQ
Frequently Asked Questions
Send us your panel drawing and we will specify the interface
Sertel engineers will review the loop schedule, cable lengths and earthing arrangement and recommend the fibre and isolation points your panel actually needs. Manufacturing, testing and support all sit under one roof in Chennai.
