RS-232 and RS-485 are different electrical standards; check the product manual for exact ports, pinouts, voltage levels and isolation so you don’t mix them up. Also confirm how many GPIOs are provided and whether a relay is supported, and verify these features are present in the current firmware and accessible from the device software. If you share your target models and the devices you need to connect, Comset can review the exact hardware interface list and firmware notes to confirm whether RS-232, RS-485, GPIO and relay support are available in the version you’d deploy.
Public Q&A
How do I confirm a router model actually has RS-232/RS-485 and GPIO in firmware?
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Use this answer as a practical starting point. Current scope, specifications, compatibility, availability, pricing, timing and next steps should be confirmed directly with Comset where they affect a decision.
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