It seems that the chinese liquid level sensor utilizes the same optical technology being implemented by sst i e.
Optical infrared water liquid level sensor.
Optical water level sensor the optical sensor is great as there are no moving parts like all other water floats.
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Optical level sensors consist of two main parts.
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When the sensor tip is surrounded by air the light reacts by bouncing back within the tip before returning to the transistor.
This time i picked a cheap 5 chinese optical liquid level sensor described by most prominent online sellers as 15ma 5v optical infrared water liquid level sensor.
Compact in construction no mechanical moving parts high reliability high precision level control meet the safety standard requirements rohs compliant.
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Easily mounting method with locking nut.
2pcs new optical infrared water liquid level sensor liquid water control switch1.
The led is on the blue and red wires blue to 5 vcc.
Manufacturer gods kingdom part number 7111263082979 item weight 1 25 pounds item model number 7111263082979 additional information.
This kit includes a optical infrared water liquid level detection sensor and a control module board.
4 or more for au 6 28 each.
5 stars 2 product ratings 2.
Optical infrared 14 99 the optical sensor detects water.
Details about optical infrared water liquid level sensor liquid water level control switch af.
I could not find any information how to get these to work after some research i found these have an led and a ldr light sensor nice.
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15ma 5v optical infrared water liquid level sensor control switch favorable level sensors product information technical details.
Very accurate and nice little sensors.
5 0 average based on 2 product ratings.
Sensor main feature.
Epttech food grade optical infrared water liquid level sensor 500mm cable high sensibility working with liquid level controller pack of 3 3 2 out of 5 stars 7 15 80 15.
It is used for point level detecting and can monitor high low level we have common purpose version for clean liquid with low viscosity and have other versions for special applications.
By using a combination of one infrared light transmitter.
Liquid water level sensor is used in the industry to better regulate quantities of chemicals in large containers.
The led projects an infrared light outward.
80 epttech fs ir82 ip68 optical infrared water liquid level sensor with magnetic holder replace float sensor 4 6 out of 5 stars 5.