Infrared liquid level sensors; infrared liquid level regulators; infrared liquid level switches; liquid level sensors; level switches; liquid level switches; level controllers; level switches for monitoring and controlling liquids in tanks, vessels and compressors; level regulators for monitoring and controlling liquids in tanks, vessels and compressors; electronic controls for refrigeration, air conditioning and heat pump; liquid level regulators with solenoid valve; liquid level controllers with solenoid valve; controllers for evaporators
Electrical and Scientific Apparatus