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The spa-side remote communicates with the base receiver on the Aqua Logic control unit using RF (radio frequency) technology. When you push a button on the spa-side remote, it sends a command and flashes the LED indicator once. After the spa-side remote receives a confirmation from the Aqua Logic base the receiver, the LED indicator on the spa-side remote flashes a 2nd time. Thus, 2 LED flashes are your confirmation that your command has been successfully transmitted to the Aqua Logic control unit. If the LED doesn’t flash at all or else just flashes once after you’ve pushed a button, refer to the Troubleshooting section for assistance in resolving these problems.

This will only work with the aql2baserf antenna.