Feature: 1. This is an exquisite water leakage alarm, using imported chips, high accuracy and stable work. 2. Adopt sound and light alarm, with switch valve 8 LED alarm indicators and 8 sensor interfaces. 3. Standard single and two-way DN20 electric ball valve, which perfectly matches the water pipe system. 4. Place it directly at the location where water leaking, once the water leaking is detected, it will trigger an audible and visual alarm, and the valve will be closed quickly. 5. Commonly used in logistics warehouses, factories, hospitals, schools or homes and other situations. Specification: Item Type: Alarm Sensor Category: Alarm Adapted Valve: DN20 Power Supply Voltage: AC100-240V Working Voltage: DC5V Output Power: <5W Switching Time: <5s Working Pressure: <1MPa Switching Times: 50000 times Medium Temperature: 0-90℃ Protection Level: IP65 Trigger Alarm: 1s Close Valve: 1s Host Front Description: First Row: Power indicator light, valve open indicator light, valve close indicator light Second Row: Reset button, valve open button, valve close button Third Row: 1-8 Road Alarm Indicator Lights: Host Side Description: Transformer interface, valve interface, 1-8 sensor interface How to Use: 1. Install the valve on the pipeline 2. Hang the main unit of the water leakage alarm in a suitable position to avoid wet environment and direct contact with water 3. Place the sensor in a place where water may leak (pay attention to avoid direct contact of the sensor contacts with metal objects) 4. Insert the transformer, valve and sensor into the corresponding position of the host 5. Plug the transformer into the power socket, power on the host, and start the water leakage alarm for self-checking. The valve defaults to the closed state. Manually press the valve open button, the valve opens automatically, and the water leakage alarm enters the working state 6. When the water leakage alarm detects water leakage, it will immediately sound and light alarm and quickly close the valve. The alarm will continue to sound and light alarm. After the water leakage point is manually removed and the water is cleaned, you need to manually press the reset button to release the alarm, and then manually press the valve opening button, the valve opens, and the alarm continues to enter the working state.. Package List: 1 x Valve1 x Host Control Box2 x Sensing Cable1 x Adapter1 x User Manual Note: 1. Please use it strictly in accordance with the specified voltage;2. Please keep the pipeline medium clear and dust‑free;3. Please use the product away from strong magnetic interference and other environments.4. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.