The Flowserve Gestra NRS 2-50 is a compact and reliable level switch designed for industrial applications, particularly for steam boilers and pressurized hot water plants. It functions as a high-level (MAX) and low-level (MIN) alarm controller, working in conjunction with level electrodes. The front panel features a clear digital percentage display for at-a-glance monitoring of the liquid level. Users can easily set the high and low switching points using the dedicated rotary knobs. The integrated 3-second time delay on both MIN and MAX outputs prevents nuisance tripping caused by turbulence, ensuring stable and dependable operation.