Liquid Level Controller 10A Adjustable Pump Logic Wide Voltage Relay AC/DC 24V240V

Product overview A compact, voltageflexible liquid level controller with selectable pump logic and adjustable sensing and timing. Available in two models to match single or dual level control needs. Key benefits Simple integration with existing pump systems thanks to wide supply compatibility AC/DC 24240V. Prevents pump short cycling and false triggers by using adjustable sensitivity and a configurable output delay. Galvanically separated supply reduces interference and improves reliability in mixedvoltage installations. Clear relay status feedback with LED for quick diagnostics and commissioning. What it does Controls pumps using PUMP UP or PUMP DOWN logic selectable by the installer. Outputs one SPDT relay rated 10A AC1 for direct control of typical pumps and contactors. Offers adjustable time delay on the output from 0.1 to 10 seconds to avoid rapid switching. Sensitivity adjustable with a potentiometer covering 5K to 100K to match a variety of sensor probes or electrodes. Models and modes GRL801: 2 level control mode. GRL802: 2 level control mode or 1 level control mode. Choice of function: PUMP UP or PUMP DOWN. Performance and compatibility Supply voltage: galvanically separated AC/DC 24240V for broad compatibility with industrial and building systems. Output: 1 SPDT relay rated 10A AC1 for reliable switching of pump motors and auxiliary loads. LED indicator shows relay status for easy visual confirmation. Practical applications Water tank automatic filling: Maintain a tank between low and probes using GRL801 for stable supply to domestic or process systems. Sump pump control: Use PUMP DOWN logic to remove water and prevent overflow, with delay to avoid short cycling on rapid fluctuations. Single level alarm or pump start: With GRL802 in single level mode use as a level alarm or simple pump start command for remote or local installations. Installation notes Adjust sensitivity potentiometer to match probe resistance or electrode arrangement. Set the delay 0.1 to 10 seconds to suit pump response and site conditions. Confirm model selection GRL801 or GRL802 to match required one or two level control configuration. This controller provides flexible, reliable level control and straightforward setup for pump automation and level monitoring applications.