Features: 1. High sensitivity, fast response time, accurate reporting. 2. Adopts photoelectric isolation and transformer isolation, safe and reliable. 3. Integration sealing design, safe and easy to use. 4. The main electrode is equipped with an isolation layer, which will alarm when the water reaches a certain height. 5. Auxiliary electrodes are optional to increase the detection range. 6. High/low level and multi relay output alarm signal mode are optional. 7. Suitable for communication base stations, hotels, restaurants, precision computer rooms, libraries, warehouses, alarm centers or monitoring computer rooms and other places that need to report hydrops. Specification: Material: ABS Plastic Color: As Pictures Shown Working Power: 12VDC Working Temperature: 0℃-50℃ Output Type Relay: Load Current 30mA Static Power Consumption: ＜0.3W Alarm maximum power consumption: 0.5W Operating humidity: 20%RH-100%RH False alarm rate: ＜100ppm High low-level output: VL 0V（+0.5V） Load capacity: VH 5V or 12V(±0.5V) Solid-state relay: ≤500mA High low-level: ≥3k (When the high level output is 12V, the supply voltage shall be higher than 16V) Detection cable: Point detection, uniformly distributed around 10cm Detection cable length: 1.5m/59.1inch Package Weight: Approx. 200g Wiring Instructions: Red Working power supply +12VDC positive pole Black Working power supply -12VDC negative pole Yellow Contact output is normally closed and no polarity difference Blue Contact output is normally open and no polarity difference Brown Signal common end. No polarity difference Package List: 1 * Water Leak Alarm ( Battery Not Included) 1 * Manual .