Feature 1External Network Sensor: The external network sensor is suitable for outdoor use, can shield external noise, obtain better listening effect, and make accurate judgments. 2Indoor Sensor: The indoor sensor is small size, high sensitivity, suitable for indoor use, more suitable for use in small spaces. 3Noise Cancelling Handle Switch: When the sensor is moved, the sound of pressing the button disappears, avoiding strong sound impact and protecting hearing. 4Zinc Alloy: This pipe water leakage detector is made of premium zinc alloy material so that it is strong, durable and has long service life. 5Widely Applicable: The water leakage sensor can be widely used in fire pipelines, floor heating pipelines, household pipelines, abnormal noise of automobiles, etc.Item Type: Pipe Water Leakage DetectorMaterial: Zinc alloyGross Weight: 3445g/121.5ozProduct Size: 16.7x11.7x8.8cm/6.6x4.6x3.5inSpecifications: US standardVoltage: 100-240vBattery: Lithium battery, model EPT773362 2S capacity 1600mah,delivered with built in batteryMagnification: 0 to 100dB adjustable Frequency: The frequency is divided into 1to 4 grades 200HZ to 3000Hz continuously adjustable.Working Current: 30mAVoltage: 9 voltsOperating Temperature: -10 to +50Working Hours: 30 hours .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Host1 x Sensor Head1 x External Network Sensor1 x Indoor Sensor1 x Handle1 x Earphone1 x Charger2 x Key1 x Aluminum Case1 x ManualNote1. Do not put water into the instrument.2. Do not disassemble and touch the internal components at will.3. Do not vibrate strongly.4. When not in use for a long time, it should be put into the instrument packing box for storage.5. Turn off the power when charging to avoid damage to the instrument.