LD-1 Low Profile Leak Detection Probe

Neptune Systems LD-1 Leak Detection Probe – a slim, low-profile sensor engineered for tight spaces where standard detectors won't fit. Designed to work exclusively with the FMM Module and Apex Controller, the LD-1 delivers instant water detection alerts via Apex Fusion, making it perfect for placement under carpets, behind cabinets, or in confined filtration areas. Ideal for monitoring floor spills, sump overflows, skimmer cup overflows, and RO/ATO system failures. Choose the LD-1 when space is limited; if you need broader coverage, consider the LD-2 instead. Note: Compatible with FMM Module only—not compatible with the older ALD module. FMM Module and Apex Controller sold separately.