HYDROS Triple Optical Level Sensor

The HYDROS Triple Optical Water Level Sensor is a three-point optical sensor for precise ATO or dosing-container level control, going beyond a simple single on/off float.

• Three independent optical sense points: LOW (3), NORMAL (2), and SAFETY (1)
• LOW triggers fill until NORMAL is reached; SAFETY acts as a backup to shut down the feed pump if a malfunction occurs
• Plugs into any HYDROS Sense Port via an aviation-style connector — no additional power source needed

Why this matters: a single-point float switch only tells you "full" or "empty" — a three-point sensor gives you a target fill level plus an independent safety cutoff, so a stuck pump can't run your ATO reservoir dry or overflow your sump unnoticed.

Compatible with: any HYDROS controller with an available Sense Port.

At Marine Concept Supply, all sales are final. Due to the sensitive nature of live animals and aquatic products, we do not accept returns or exchanges under any circumstances. Please review your order carefully before completing your purchase. No Cancellations.

If you have any questions or concerns about your order, please contact us at shop@marineconceptsupply.com and we’ll do our best to assist you.

We Ship UPS and will send tracking as soon as the item ships. 

Return shipping for any approved warranties are not covered and will be subtracted from the approved credit total.

Restock Fees apply to some products, due to their size or a manufacturer policy.Each product with a restock charge is marked online, in the description.

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right