The A3 Apex System offers the control but scaled back monitoring with room to grow for the everyday aquarist.
What’s Included in Each Starter Kit:
| Apex PRO | Apex | Apex Jr | |
|---|---|---|---|
| Temperature Monitoring |  |
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| pH Monitoring | |
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| ORP Monitoring | |
— | — |
| Salinity Monitoring | Probe Available Separately | — | — |
| FMM Input Ports | 4 | 3 | 2 |
| Controllable Outlets | 8 | 8 | — |
| 1LINK Outputs | 3 | 3 | — |
| DC 24V Outputs | 2 | 2 | — |
| Digital Inputs | 6 | 6 | — |
| Audible Alarm Buzzer | |
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| Wi-Fi | |
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| Hard-wired Ethernet | |
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— |
| Liquid Level Monitoring | |
— | — |
| Leak Detection | Optical | Analog | Analog |
| Variable Outputs (0-10V) | 4 | — | — |
| Optical Sensor | — | |
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| Expandable | |
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