LevelSpy capacitive level sensors from iSEMcon LLC, Sylvania, OH, provide point or continuous level detection of liquids and materials. The sensors can function in throughwall or submerged applications and are offered with straight, flexible, or completely flexible probes. Features include proximity or self-compensating technologies; 10–30 VDC operation, 3-wire PNP or NPN and/or NO or NC output; LED indicators; and IP68/IP69K ratings. The sensor is watertight and has an operating temperature range of –20°C to 100°C. Applications include semiconductor, automation, solar, medical testing, pharmaceutical, wind turbines, wastewater, and chemical.