Electromechanical relays GRL8-01 Water Level Controller Liquid Relay 10A AC DC 24V 220V Water Pump Relay with Wide Range Voltage General Applications-Designed for level monitoring in wells, basins, tanks, tanks...Functional characteristics-In a single device you can choose the following configurations:- GRL8-01 = 2-level control mode- .-Power supply voltage galvanically separated AC/DC 24-240V. - 1SPDT 10A/AC1 output - The status of the relay is indicated by the LED. - 1 MODULE, din rail mounting.