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Neptune Systems - Apex Jr. System A3 is available for pre-order – please confirm stock before ordering!
The Neptune Systems Apex Jr. System A3 delivers powerful and affordable aquarium monitoring in a streamlined package—perfect for hobbyists who want essential automation and protection without the complexity of a full controller system.
Designed as an entry point into the Neptune Apex ecosystem, the A3 Jr. provides robust monitoring capabilities for temperature, leak detection, and optional expandability through additional sensors and modules. The included temperature probe and solid-surface leak detection sensor help you keep your aquarium safe from sudden changes or emergencies.
With the Apex Fusion cloud interface, users can easily view real-time data, receive alerts, and configure settings from any device—no advanced programming required. The A3 Jr. is also fully compatible with the entire Neptune Systems ecosystem, allowing you to expand your setup as your needs grow.
Key Features:
Entry-level controller for essential aquarium monitoring
Includes A3 Jr. Base Unit, temperature probe, and solid-surface leak detection sensor
Built-in Wi-Fi for seamless cloud connectivity via Apex Fusion
Real-time monitoring with customizable alerts
Compact, modern design ideal for small to mid-size aquariums
Expandable with additional Neptune accessories such as the Energy Bar, Trident, and DOS
Simplifies aquarium management while providing safety and control
The Apex Jr. A3 is the smart choice for aquarists looking to automate and protect their aquarium without overcomplicating the experience.