TEMPERATURE HUMIDITY IP SENSOR POE REMOTE NETWORK

Underground cable fiber optic temperature sensor

Underground cable fiber optic temperature sensor

High-resolution temperature sensing with Raman-OFDR using optical communication fiber cables shows great potential as it allows the surveillance of several kilometers of underground transport facilities without the need for installing sensing equipment in the tunnels. Underground cable monitoring is crucial for maintaining reliability and preventing failures caused by environmental and mechanical threats. By detecting issues early, it enables proactive maintenance, reducing the risk of service disruptions and costly repairs. Current temperature measurement methods, including fiber-optic-based systems (DTS and LTS), involve high costs that limit their feasibility in medium-voltage networks, where more economically accessible alternatives are required. Contact us today to learn more about our praetorian sensing for underground power cable capabilities and above-ground power cable monitoring.

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PoE switch network not working

PoE switch network not working

If your Cisco switch PoE is not working, the most common causes are an exhausted PoE power budget, a disabled inline power configuration, physical cable faults, incompatible powered devices (PD), or a crashed PoE controller. When a problem occurs with PoE, in most cases, the error symptom can be simply shown as the PoE switch not providing power, and the powered devices will stop working. This guide provides a step-by-step troubleshooting framework focusing on Cisco Catalyst switches (notably the 9300 and 2960 series), covering error categories, CLI commands, model-specific insights, and preventive measures.

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