The GESTRA NRGT 26-1 is a top-mounted insertion level switch engineered for industrial and marine liquid level monitoring. It features a stainless steel probe assembly with a flange-mounted design for direct installation into tanks, pipelines, or vessels. The blue electrical enclosure houses the control and switching mechanism, which typically operates on a magnetic float or conductive sensing principle to detect liquid level thresholds, triggering on/off control signals or alarms. Its robust stainless steel construction ensures corrosion resistance and durability, while the IP-rated enclosure provides protection against harsh environmental conditions, making it suitable for monitoring liquids in marine engine systems, boilers, and industrial process tanks.