SKU: 94563297220

Neptune System 4" Liquid Level Sensor With Clip Mount

Sale price$80.10 Regular price$89.00
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Description

Neptune System 4" Liquid Level Sensor With Clip MountLLS 4 The 4 LLS is the smallest of the four sensor offerings. It is the perfect fit for small reservoirs for small sumps, ATO reservoirs and additive containers. This can be a great solution to double check that liquid additions of your additives match your dosing solution over a period of time. For example, if you dosed 250 mL additives over two weeks and you know each inch is 100 mL, then the additive reservoir liquid level would have decreased

LLS-4

The 4″ LLS is the smallest of the four sensor offerings.  It is the perfect fit for small reservoirs for small sumps, ATO reservoirs and additive containers.  This can be a great solution to double check that liquid additions of your additives match your dosing solution over a period of time.  For example, if you dosed 250 mL additives over two weeks and you know each inch is 100 mL, then the additive reservoir liquid level would have decreased exactly by 2.5″.

Never before offered in the aquarium industry the LLS Sensors allow for the measurement of water depth in inches or centimeters.  Available in four different sizes- 4″, 15″ 23″ and 35″ each sensor has a special place in helping understand the water level in the sump, aquarium, reservoirs, and other liquid-holding containers.  No longer does one need to physically look to observe how much water level is above or below a specific point, but now simply open the Apex Fusion App and observe.

The LLS sensor can connect to any available FMM port in the Apex System.  Liquid will enter the plastic envelope around the thin material of the sensor.   Once the liquid is in contact with the sensor material the LLS uses a patented resistive sensing technology to accurately and reliably measure the liquid level in a container.

Included with each LLS sensor is a clip that allows for the mounting of the sensor to the side of the sump, aquarium or container.  Have a Euro braced sump?  Don’t worry you can simply mount the LLS sensor to a baffle inside the sump.

Later in 2022 Neptune Systems will release a magnetic version of this clip and a clip that mounts to a euro-braced sump or aquarium.

Generally the sensors respond to liquid level changes at a rate of about fifteen seconds per inch of water level change.  So if the water level was suddenly decreased three inches, then it could take up to forty-five seconds to reflect this change.  While quick depth level changes are uncommon in an aquarium, and, typically, changes  are reflected more quickly than this, for this reason, it is best practice not to use the LLS for immediate control needs— like auto top-off control.

Once calibrated the LLS is accurate to about two-tenths of an inch.

Liquid Level Sensor- 4″ (LLS-4)

The 4″ LLS is the smallest of the four sensor offerings.  It is the perfect fit for small reservoirs for small sumps, ATO reservoirs and additive containers.  This can be a great solution to double check that liquid additions of your additives match your dosing solution over a period of time.  For example, if you dosed 250 mL additives over two weeks and you know each inch is 100 mL, then the additive reservoir liquid level would have decreased exactly by 2.5″.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 94563297220

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Janet L. Dolbow
Boise, US
★★★★★ 5
Cool
Color: Pink, Size: Standard
Cooling pillowcases work well, don’t wake up sweaty anymore. Very happy with them. Love the material, comfort and softness!
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Reviewed in the United States on June 7, 2026
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md
Omaha, US
★★★★★ 5
COOL Pillowcases Worth Buying
Color: Champagne, Size: Queen
I bought these to try out, and I was shocked to find they worked out better than my silk pillowcases. I have atopic dermatitis, and I need a pillowcase that doesn't irritate my skin. I also am having hot flashes and need something cool on my face. These pillowcases are perfect for both my conditions. I plan to buy more in different colors. My sons and husband also like it since they are always hot.
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Reviewed in the United States on May 30, 2026
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Susan H Garland
Grantham, US
★★★★★ 5
Get this If your hot in bed
Color: Champagne, Size: Queen
Very nice and silky.helps keep me cooler.
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Reviewed in the United States on May 9, 2026
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Emily
Lake Worth, US
★★★★★ 4
Cool not cold
Color: Light Gray, Size: Queen
Super silky like material. Comfy and fits pillow perfectly. Wish it could be a more cold then cool.
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Reviewed in the United States on June 1, 2026
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Cat Flo
Draper, US
★★★★★ 3
It’s ok could be cooler
Color: Light Gray, Size: Queen
Decent — could be cooler. They’re a nice color and texture. It fit my pillows well no annoying zippers it’s nice to sleep on and stay in place.
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Reviewed in the United States on March 8, 2026

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