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The RED SEA ReefControl Lite was designed for aquarists who want reliable, connected monitoring without immediately committing to a complex setup. It combines essential monitoring and automation functions in a compact format, while remaining perfectly integrated into the ReefBeat ecosystem.
The controller allows you to monitor aquarium parameters 24/7 , with direct access to measurements from a smartphone or tablet. Information is centralized in one place, making it easy to read trends and quickly detect anomalies.
This approach allows for a better understanding of the daily behavior of the tank while reducing the need to multiply independent devices around the aquarium.
The ReefControl Lite comes with a combined pH and temperature ReefSense probe . Right out of the box, it allows you to monitor two fundamental parameters for the stability of a reef aquarium.
Measuring pH helps monitor the chemical balance of the tank, while temperature helps ensure the water remains within a range suitable for fish, corals, and invertebrates.
The pH probe uses a dual-junction design with two external ceramic junctions , designed to improve its longevity in marine environments. It also incorporates automatic temperature compensation to ensure consistent measurements under real-world aquarium operating conditions.
The probe supplied with the ReefControl Lite offers accuracy suitable for continuous monitoring of a marine aquarium. pH measurement is advertised with a precision of 0.05 pH and an accuracy of 0.01 pH, while temperature is measured with an accuracy of 0.05 °C .
This precision in measurement makes it particularly useful to track variations over time and more easily identify unusual trends. A gradual drop in pH or a temperature drift can thus be detected quickly, sometimes before it becomes problematic for the tank's inhabitants.
The system is particularly useful for aquarists who want a reliable history of parameters rather than relying solely on occasional manual measurements.
The ReefControl Lite has two ports for ReefSense probes or sensors . One of them is used by the pH + temperature probe included in the kit, leaving a second port available for future expansion.
Depending on the aquarium's needs, it is possible to add a compatible ReefSense probe or sensor, for example:
This modular design allows you to start with the essential functions, then gradually add the most relevant sensor for the installation.
ReefSense probes use a digital architecture. Data from the sensor is converted directly within the probe before being transmitted to the controller.
This design helps to reduce the influence of electromagnetic interference , which is common in reef aquariums where pumps, lights, motors, skimmers and numerous electrical devices coexist.
With a conventional analog probe, these disturbances can influence the signal as it travels to the controller. By converting the information directly within the probe, ReefSense aims to preserve the stability and consistency of the measurements.
Another advantage of ReefSense digital technology is that calibration data is stored directly in the probe . Once calibrated, it can be moved from one compatible controller to another without automatically requiring recalibration.
The probe also retains its calibration history. This information allows its condition to be monitored over time and can help to gradually detect a loss of performance.
This design makes maintenance simpler and facilitates the evolution of the installation when a user changes controllers or adds an additional ReefControl module.
The various ReefSense digital sensors use a common communication interface . Therefore, it is possible to connect different types of probes to the available ports without dedicating each port to a specific parameter.
This architecture provides real flexibility: the user can choose the combination of measurements best suited to their aquarium and modify it later.
It also allows for the addition of future compatible ReefSense sensors without having to replace the entire controller.
The ReefControl Lite has a 12V DC output which can be used to automate certain low voltage equipment based on monitored parameters.
Depending on the installation, this output can control a small pump, a fan, a solenoid valve, or another compatible device. Operation can be linked to values measured by the sensors to create simple and automatic regulation.
A rise in temperature can, for example, trigger a ventilation system, while another predefined condition can control a solenoid valve or a device adapted to the operation of the tank.
The ReefControl Lite also features a dedicated output for connecting the ReefControl Power . This combination allows you to extend automation to mains-powered equipment.
pH or temperature values can then be used to control devices such as a heater, cooler, pump, skimmer or other compatible electrical equipment .
The ReefControl Lite monitors and analyzes data, while the ReefControl Power manages the power supply to the devices. Together, they enable more advanced conditional actions.
The temperature measurement provided by the ReefSense probe can be used to automate various equipment. With its 12V DC output, it is possible to control a cooling fan or a compatible low-voltage device.
By adding a ReefControl Power, the same logic can be used to control a mains-powered heating or cooling system.
The ReefControl Lite thus becomes much more than a simple measuring device: it can actively participate in maintaining the thermal stability of the tank.
The controller communicates via Bluetooth and Wi-Fi and integrates directly with the ReefBeat app available on iOS and Android.
The user can view measurements, track their evolution, and receive alerts when a parameter falls outside the defined range. This continuous monitoring eliminates the need to be physically present at the aquarium to check its condition.
ReefBeat also centralizes the various compatible Red Sea devices, allowing for the gradual management of several system elements from a common interface.
With its two ReefSense ports, 12V output and ReefControl Power compatibility, the ReefControl Lite is particularly suited to aquariums where monitoring needs remain targeted.
It provides an interesting base for users who primarily want to monitor pH and temperature, while retaining the ability to add an additional parameter and automation.
For installations requiring more probes and sensors simultaneously, the ReefControl range also offers more advanced versions.
The ReefControl Lite can be installed as the first element of a ReefControl system, then expanded gradually as needed. An additional sensor can be added to the second ReefSense port, while a ReefControl Power can handle the automation of electrical devices.
This design avoids the need to invest immediately in a very complete setup when it's not required. The aquarist can develop their system step by step , as their aquarium or monitoring needs become more complex.
The kit comes with the necessary components to immediately begin monitoring pH and temperature:
Brand: Red Sea
Product line: ReefControl
Model: ReefControl Lite
Reference: R35812EUR-T
ReefSense ports: 2
Probe included: ReefSense pH + temperature
Measurements included: pH and temperature
pH accuracy stated: 0.05 pH
pH accuracy as stated: 0.01 pH
Temperature accuracy: 0.05 °C
Output: 1 × 12 V DC
ReefControl Power connection: yes
Connectivity: Bluetooth / Wi-Fi
App: ReefBeat on iOS and Android
Scalability: add an additional ReefSense probe or sensor
Use: monitoring, alerts and automation of marine or reef aquarium equipment
