The digital ATO sensor and DC pump of the ReefControl ATO module connect directly to the ReefControl Pro or Lite to seamlessly add a fully featured ATO to your system without the need for an additional controller. The ATO module includes the digital ATO level sensor, mounting bracket, ATO pump, siphon breaker, tube holder, and silicone tubing. The digital ATO level sensor also includes a highly accurate temperature sensor, providing real-time monitoring, notifications, and logs. It can also be configured to automatically control DC equipment, such as cooling fans or AC equipment, such as heaters, when used in combination with ReefControl Power. Add a fully featured, fail-safe Automatic Top-Off system directly to your ReefControl unit. This module includes Red Sea's solid-state digital ATO sensor (with a built-in thermometer), a quiet variable-flow pump, and a complete installation kit, allowing your ReefControl Pro or Lite to manage your tank's water level and temperature with precision. Detailed Description: Integrate the most critical aspect of reef stability—salinity—directly into your ReefControl ecosystem. This ATO Module is an essential add-on for any ReefControl Pro or Lite user, turning your controller into a complete, smart Automatic Top-Off system. This module is built around two core components: the advanced digital sensor and the reliable ATO pump. The sensor is the star of the show. It's a slim-line, solid-state unit with no moving parts that can fail, clog, or get stuck. It uses multiple titanium probes to get a hyper-accurate sense of your water level. As a bonus, this digital sensor also includes a built-in, high-accuracy thermometer (accurate to 0.1 degrees), providing an additional temperature reading for your sump or rear chamber. The included 12V DC pump is quiet, powerful, and serviceable. It's compact enough to fit in small reservoirs and features variable flow, allowing the ReefControl to manage the top-off process smoothly. When plugged into your ReefControl unit, you can monitor your ATO status and temperature logs directly from the ReefBeat app. Key Features: Direct ReefControl Integration: Plugs directly into a ReefControl Lite or Pro, adding full ATO functionality without an additional controller. 2-in-1 Digital Sensor: Solid-State ATO Sensor: Uses EC technology and titanium probes for a fail-safe, ultra-reliable water level reading. No moving float switches. Built-in Temperature Probe: Includes an integrated digital thermometer (accurate to 0.1°C) for real-time monitoring and logging. Quiet, Variable-Flow Pump: A compact (1.8" diameter) and serviceable 12V DC pump (6-10W) that is powerful (max flow 75 gph, max head 8') yet quiet. ReefBeat App Monitoring: Check your ATO status and review detailed temperature logs directly from your phone. Complete Installation Kit: Includes everything you need to get running: Digital ATO Level & Temp Sensor ATO Pump Magnetic Sensor Mounting Bracket (for up to 1/2" glass) 10' (3M) Silicone Tubing Siphon Breaker Silent-Flow Tube Holder Automation Possibilities: Maintain Perfect Salinity: Let your ReefControl unit manage your ATO for rock-solid water levels. Temperature Monitoring: Get an accurate temperature reading directly from your sump's ATO sensor, which can be used to monitor or trigger other automations. Alerts & Logs: The ReefBeat app will log all temperature data and can send you alerts if your water level sensor has an issue. Compatibility: This module is an accessory and requires a Red Sea ReefControl Lite or ReefControl Pro to function. Complete Your ReefControl System The ATO Module & Temp Sensor plugs into the ReefControl Pro or Lite for automatic top-off and temperature monitoring. Round out your system with: ReefControl Pro Aquarium Controller — the WiFi controller this module connects to ReefControl Lite Aquarium Controller — a compact controller option ReefControl ReefSense 4-Port Expander — add more sensor ports to your controller ReefControl Power 8 — the 8-outlet smart power center for full automation See everything in our Automation & Controllers collection.
