This water leakage detection sensor kit includes five individual probes with 3.5mm audio head connectors, designed for reliable monitoring of potential water leaks in various environments. Each sensor features dual metal poles that create a conductive path when moisture is present, triggering an audible alert through compatible monitoring devices. The probes are constructed from corrosion-resistant materials, ensuring consistent performance even in damp or humid conditions. The compact housing offers protection against dust and physical impact, making them suitable for placement in tight spaces such as under sinks, behind appliances, or near water heaters. The detection system operates on a straightforward principle: when moisture bridges the gap between the two metal poles, the circuit closes and activates the connected alarm mechanism. This design provides real-time notification without complex wiring or calibration. The 3.5mm audio jack interface allows easy integration into existing alarm panels, smart home hubs, or standalone sound modules. With five units included, users can cover multiple areas simultaneously, enhancing overall leak prevention coverage. The lightweight plastic casing is sealed to prevent moisture ingress into the internal components, extending the service life of each sensor. From a hardware perspective, the probes are made of nickel‑plated brass for excellent conductivity and resistance to oxidation. The cable connecting the probe to the audio jack is PVC‑insulated, providing flexibility and adequate length for standard installation. The overall build quality emphasizes practicality and cost‑effectiveness, with attention to contact reliability over repeated use. The system does not require batteries for the sensors themselves if powered via the audio port, though the connected alarm unit may need its own power supply. Operating temperature range typically covers household conditions, ensuring stable function from near‑freezing to warm environments. This set is intended for homeowners, property managers, and maintenance professionals looking for an affordable, no‑frills leak detection solution. The low per‑unit price makes it feasible to deploy multiple sensors without significant investment. While it does not include an integrated alarm, the compatibility with most 3.5mm audio input devices expands its versatility. The dual‑pole design minimizes false alarms by requiring direct water contact across both poles. Routine maintenance involves occasional cleaning of the metal surfaces to remove any mineral buildup.

These sensors offer dependable leak detection in a compact, budget‑friendly form.