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Optomax Industrial Range of Liquid Level Switches

SST Sensing Optomax Industrial Range of Liquid Level Switches are designed to offer industrial supply voltages and outputs that can directly drive higher power loads. The microcontroller-based sensor is solid state, incorporating an infrared LED and phototransistor, which are optically coupled by the tip when the sensor is in the air. When the sensing tip is immersed in liquid, the infrared light escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type, oil or water-based. It is insensitive to ambient light and is not affected by foam in the air or small bubbles in a liquid.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Connection Method	Current Rating	Output Type	Pressure Range
	Level Sensors Liquid Level LLC200D324-004 SST Sensing 1: CHF 50.43 36In Stock	Mfr. Part No. LLC200D324-004 Mouser Part No 231-LLC200D324-004	SST Sensing	Level Sensors Liquid Level Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	36In Stock	CHF 50.43 CHF 43.84 CHF 37.51 CHF 35.88 View CHF 33.92 CHF 33.07 CHF 33.06 Quote	Min.: 1 Mult.: 1			Wire	7.5 mA	PNP
	Level Sensors Liquid Level Sensor, , 1/4" NPT, Low in Air, , Wired LLC710D3L24-003 SST Sensing 1: CHF 55.00 30In Stock	Mfr. Part No. LLC710D3L24-003 Mouser Part No 231-LLC710D3L24-003	SST Sensing	Level Sensors Liquid Level Sensor, , 1/4" NPT, Low in Air, , Wired Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	30In Stock	CHF 55.00 CHF 53.61 CHF 50.84 CHF 47.50 View CHF 44.94 CHF 43.81 CHF 43.80 Quote	Min.: 1 Mult.: 1			Wire	7.5 mA	NPN
	Level Sensors Liquid Level Sensor, , 1/4" NPT, High in Air, , Wired LLC710D324-003 SST Sensing 1: CHF 66.01 10In Stock 20Expected 12/1/2026	Mfr. Part No. LLC710D324-003 Mouser Part No 231-LLC710D324-003	SST Sensing	Level Sensors Liquid Level Sensor, , 1/4" NPT, High in Air, , Wired Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	10In Stock 20Expected 12/1/2026	CHF 66.01 CHF 50.85 CHF 49.31 CHF 47.46 View CHF 45.50 CHF 44.36 Quote	Min.: 1 Mult.: 1			Wire	7.5 mA	NPN
	Level Sensors Liquid Level Sensor, , 1/2" UNF, High in Air, , Wired LLC610D324-003 SST Sensing 1: CHF 60.91 51In Stock	Mfr. Part No. LLC610D324-003 Mouser Part No 231-LLC610D324-003	SST Sensing	Level Sensors Liquid Level Sensor, , 1/2" UNF, High in Air, , Wired Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	51In Stock	CHF 60.91 CHF 53.61 CHF 50.84 CHF 48.42 View CHF 47.13 CHF 44.36 Quote	Min.: 1 Mult.: 1			Wire	7.5 mA	NPN
	Level Sensors Liquid Level Sensor, M12, Low in Air, , Wired LLC210D3L24-003 SST Sensing 1: CHF 66.01 8In Stock 30Expected 11/26/2026	Mfr. Part No. LLC210D3L24-003 Mouser Part No 231-LLC210D3L24-003	SST Sensing	Level Sensors Liquid Level Sensor, M12, Low in Air, , Wired Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	8In Stock 30Expected 11/26/2026	CHF 66.01 CHF 56.37 CHF 49.31 CHF 47.46 View CHF 45.50 CHF 44.36 Quote	Min.: 1 Mult.: 1			Wire	7.5 mA	NPN
	Level Sensors Liquid Level Sensor, , 1/2" UNF, Low in Air, , Wired LLC610D3L24-003 SST Sensing 1: CHF 64.81 5In Stock	Mfr. Part No. LLC610D3L24-003 Mouser Part No 231-LLC610D3L24-003	SST Sensing	Level Sensors Liquid Level Sensor, , 1/2" UNF, Low in Air, , Wired Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	5In Stock	CHF 64.81 CHF 56.37 CHF 46.96 CHF 45.20 View CHF 44.00 CHF 42.89	Min.: 1 Mult.: 1			Wire	7.5 mA	NPN
	Level Sensors Liquid Level Sensor, M12, High in Air, , Wired LLC210D324-003 SST Sensing 1: CHF 55.00 8Expected 11/23/2026	Mfr. Part No. LLC210D324-003 Mouser Part No 231-LLC210D324-003	SST Sensing	Level Sensors Liquid Level Sensor, M12, High in Air, , Wired Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	8Expected 11/23/2026	CHF 55.00 CHF 50.85 CHF 49.31 CHF 47.46 View CHF 45.50 CHF 44.36 Quote	Min.: 1 Mult.: 1			Wire	7.5 mA	NPN	101 psi
	Level Sensors Liquid Level LLC200D3L-001 SST Sensing 1: CHF 54.33 Non-Stocked	Mfr. Part No. LLC200D3L-001 Mouser Part No 231-LLC200D3L-001	SST Sensing	Level Sensors Liquid Level Learn More about SST Sensing optomax industrial liquid level switches	Datasheet	Non-Stocked	CHF 54.33 CHF 47.54 CHF 40.57 CHF 38.66 View CHF 36.54 CHF 35.62 Quote	Min.: 1 Mult.: 1			Wire	2.5 mA	NPN