<![CDATA[Sump pumps play a critical role in preventing water accumulation in cable ducts at industrial facilities by automatically removing water entering the cable duct. Conventional sump pump systems generally rely on manual monitoring and have limited protection features, which may reduce operational reliability and increase the risk of pump failure. This study proposes an ESP32-based automatic sump pump monitoring and control system integrated with the Arduino IoT Cloud for real-time monitoring and remote operation. The developed system employs a float switch to detect the water level, a flow switch to verify water flow, and a Thermal Overload Relay (TOR) to protect the pump motor from overload conditions. The implemented control algorithm includes automatic pump operation, Flow Fail detection with a timeout of 10 s, Over Time protection limiting continuous operation to 300 s (5 min), automatic fault reset after 8 h for non-overload faults, and a 5 s recovery delay following overload clearance. Experimental results demonstrate that the proposed system successfully performs automatic pump control, detects abnormal operating conditions, and provides reliable fault protection. Furthermore, the integration with the Arduino IoT Cloud enables real-time monitoring of pump status, water level, flow condition, and fault information, as well as remote manual control through a wireless network. The proposed system offers a practical, low-cost, and reliable solution for improving safety, monitoring capabilities, and operational efficiency of sump pump systems for water management in industrial cable ducts.]]>
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