อัปโหลดแล้ว 4 ปี ก่อนหน้านี้
A calibration adjustment allows the Model 233-P to be calibrated to your specific pumping applications, thereby reducing the possibility of false or nuisance tripping. A proprietary microcontroller based voltage, power factor and current-sensing circuit constantly monitors for power fluctuations, overcurrent and underload conditions. https://www.aquascience.net/symcom-pump-saver-plus-pump-protector-for-230v-1-3-hp-to-1-5-hp-submersible-pumps-with-enclosure
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