Features: 1. Built-in speaker, Automatic water leakage alarm is triggered when leakage or flooding is detected. 2. Responsive response Live sound and light alarm.With the sensitive sensing probes for protecting your home and valuables from annoying leaks and dangerous floods,whether it's a dripping sink under the bathroom cabinet, a burst pipe in the basement, or a severe weather event. 3. Battery powered with low energy consumption.Low power consumption, ultra-long standby, standby current <50UA.The sensor requires little effort to install and it is very easy to use,you are certain to get the quality and expectation that you desire. 4. Long standby: The battery standby time is more than 1 year.Plug&Play,reliable performance,small and compact appearance. 5. Fire-retardant ABS material, wear-resistant and durable.Low-cost, simple, and effective device prevents property damage, monetary loss, health risks caused by water damage. Specifications: Condition:100% Brand New Material: ABS Color: As shown in the picture Model: YE-990-WL Measurement method: Direct detection Measurement method: Automatic Alarm method: Sound and light Power supply: 3*AA battery - 4.5V (not included) No trigger: automatically sleep after 3 minutes Package List: 1*Water Leakage Detector Alarm(without battery) 1*Instruction Manual 1*Pack Mounting Screws 1*Detection Cable 1、1. Built-in speaker, Automatic water leakage alarm is triggered when leakage or flooding is detected. 2、2. Responsive response Live sound and light alarm.With the sensitive sensing probes for protecting your home and valuables from annoying leaks and dangerous floods,whether it's a dripping sink under the bathroom cabinet, a burst pipe in the basement, or 3、3. Battery powered with low energy consumption.Low power consumption, ultra-long standby, standby current <50UA.The sensor requires little effort to install and it is very easy to use,you are certain to get the quality and expectation that you desire. 4、4. Long standby: The battery standby time is more than 1 year.Plug&Play,reliable performance,small and compact appearance. 5、5. Fire-retardant ABS material, wear-resistant and durable.Low-cost, simple, and effective device prevents property damage, monetary loss, health risks caused by water damage.