

The A3 Apex Jr. is the first monitoring only solution that monitors exactly what you need; and, when ready, opens the door to control for all aquarists.
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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