The Neptune Systems Leak Detection Probe LD-1 is a flat leak detection probe to be used together with the FMM module. Plug this LD-1 probe into your FMM and then place it underneath your carpet near your aquarium. Upon contact with water the LD-1 will communicate to your Apex and alerts or other actions can then take place.
Note: The LD-1 will only work with the FMM and cannot be used with the ALD module.