The GESTRA NRGT 26-1S is a top-mounted insertion level switch designed for industrial and marine applications. It features a stainless steel sensing probe with a flange-mounted design for direct installation into tanks or pipelines. The blue electrical enclosure houses the switching mechanism, which detects liquid levels via a magnetic float principle, triggering on/off control signals or alarms when liquid levels cross predefined thresholds. Its robust stainless steel construction and IP-rated enclosure ensure reliable operation in harsh environments, making it ideal for monitoring liquid levels in tanks, separators, and marine engine systems.