The HYDROS Slim Temperature Sensor by CoralVue is a waterproof IP68 sensor that monitors your aquarium's temperature through any HYDROS controller. It plugs straight into a Sense Port and feeds real-time temperature data to the HYDROS app, so you can watch trends and get alerts the instant readings drift out of range — essential for keeping fish and coral in a stable environment. Key features Accurate, reliable readings for consistent temperature control. Real-time app monitoring with data logging and out-of-range alerts. Slim, waterproof build that fits discreetly into any tank or sump. Plug-and-play — connects to a Sense Port on any HYDROS controller in seconds, no coding. Specifications Waterproof rating: IP68 Size: 1.6″ long × 0.32″ wide Connection: HYDROS Sense Port Frequently asked questions How does it connect? It plugs directly into a Sense Port on any HYDROS controller — no modules or setup code required. Is it waterproof? Yes — it carries an IP68 rating for full submersion. Isn't this included with the starter kits? One comes with the HYDROS Control Starter Packs; this listing lets you add extra sensors as your system grows. Shipped fast with expert support. Get your HYDROS gear from real reefers at Marine Concept Supply, with setup help when you need it and local pickup at our Wheeling, IL showroom.