This product uses the principle of electrode water intrusion resistance change to detect accumulated water. It adopts MUC intelligent detection method, and the sensor is designed to prevent rust. It has high precision and sensitivity, low power consumption, good long-term stability and reliability, etc. Advantages, this product can be widely used in all water storage equipment such as basements, computer rooms, warehouses, and places where water leakage or overflow needs to be known. This wireless flood detection alarm adopts advanced wireless transmission technology and can be used with the alarm host. When the water level is higher than the set value, the detector will immediately alarm when the detection foot of the detector is submerged, and send a signal to the receiving host, prompting that the water level exceeds the standard, please take corresponding measures in time. No need for installation, it can be placed flat at will wherever you need waterproofing. Compared with traditional water immersion sensors, SQ100B adopts a bold single design, which is more flexible and convenient to place. Technical Parameters Working voltage: 3V Standby current: 10uA Alarm current: 65mA Alarm indication: red LED Output mode: 315M/433M (default is 433M) Wireless distance: 100 meters (open distance) Working temperature: 0-60C Working humidity: 0-80RH (no condensation) Undervoltage prompt: 2V (light flashes quickly) Product size: 54*35MM