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Ships within 48 hours · Estimated delivery Jun 27 - Jul 2
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Description
OS-1 Optical Level Sensor V2Optical sensors are the go to sensor if you want a reliable sensor over a long period. The Neptune Optical Sensor plugs directly into the FMM allowing you to monitor the level of your sump, mixing station, or any other reservoir with liquid in it. This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 2449 reviews
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Product Reviews
★★★★★ 4
Band included is for a fat wrist.
Surprisingly good quality for the price. Hard to read in dim light. If it lasts I'd buy it again.
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Reviewed in the United States on December 17, 2025
★★★★★ 5
Great
Great watch
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Nice looking shirt for men
Size: Large, Color: Grey
I ordered this short for my husband. It looks very nice on him. The fit is perfect.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Great golf shirt!
Size: Medium, Color: White+pocket
Quality fabric. Very comfortable shirt for golfing. Accurate sizing. Washes nicely.
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Reviewed in the United States on October 28, 2025
★★★★★ 1
Pocket is phony.
Size: Large, Color: Grey
Pocket is phony.
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Reviewed in the United States on March 10, 2026
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