GIC Liquid Level Controllers. Fully Automatic operation enabling both draining and filling at the same time with a single device. Protects submersible pumps against dry running and prevents overfilling. Enables maximum utilization of incoming liquid supply. Specially designed corrosion and shock resistant sensors to ensure problem free operation. Features and Benefits. Includes provision for Manual start. Adjustable sensitivity level from 1k to 200k Ohm. Adjustable reaction timer from 0.1s to 10s