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The development of technology today is very rapid, especially in the field of telecommunications and information. Network improvement continues to be carried out, especially incapacity in bandwidth order to improve multimedia services. The best choice to support a reliable communication network is fiber optic. One of the fiber optic technologies is Fiber To The Home (FTTH). This paper proposes to explain how to solve problems and maintenance onnetworks Fiber To The Home (FTTH)from Optical Line Termination (OLT) to Optical Network Termination (ONT). This paper will also explain how to analyze the power value and power loss on eachnetwork Fiber To The Home (FTTH). Abstrak  Perkembangan teknologi saat ini sangatlah pesat, terutama dibidang telekomunikasi dan informasi. Peningkatan jaringan terus dilakukan terutama pada kapasitas bandwidth agar dapat meningkatkan layanan multimedia. Pilihan terbaik untuk mendukung jaringan komunikasi yang andal adalah fiber optic. Salah satu teknologi fiber optic adalah Fiber To The Home (FTTH). Makalah ini mengusulkan untuk menjelaskan bagaimana cara mengatasi permasalahan dan pemeliharaan pada jaringan Fiber To The Home (FTTH) dari Optical Line Termination (OLT) sampai Optical Network Termination (ONT). Pada makalah ini juga akan menjelaskan bagaimana cara menganalisa nilai daya dan loss daya pada setiap jaringan Fiber To The Home (FTTH).

This study aims to design an automatic pump control system and assess the effectiveness of using pumps in seawater distillation systems. The system uses an Arduino Uno microcontroller for central control of all system activities and a relay as a pump switch. Ultrasonic sensors, pH sensors and TDS sensors as input to provide information on the condition of the water in the storage container, the water pump as an output for pumping and flowing sea water and distilled water. The water pump in the seawater distillation system is used to drain seawater to the initial reservoir with a water level set point >20cm, if the set point is met, the pump will turn on. The second mini pump is used to flow the distilled water to the final reservoir with a set point value of pH <8 and a TDS value <1400, so the pump will turn on. The third mini pump is used to flow distilled water to the second basin with a set point value of pH >8 and a value of TDS >1400, so the pump will turn on, therefore the use of a pump in an automatic seawater distillation system is needed and its use can be said to be effective. Keywords: Water Pump, Relay, Control