ELC-810 Single-Sensing Water Level Controller Sight Glass - 50 Foot Cord filter-internal-diameter_4 1/16 inches which is necessary for the

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ELC-810 Single-Sensing Water Level Controller Sight Glass - 50 Foot Cord filter-internal-diameter_4 1/16 inches which is necessary for theThis is an ELC 810 Single Sensing Water Level Controller for sight glass applications with a 50 foot cable length. The ELC 810 is an interactive, fully menu driven, automated multi level sensing controller. The ELC 810 Water Level Controller uses proximity sensing technology instead of floats or electrical currents. The proximity sensors monitor the water level accurately and will automatically activate the auto water make up control valve. It is