Introduction
Thank you for choosing the Walfront Water Leak Detector. This manual provides essential information for the proper setup, operation, and maintenance of your device. Please read these instructions carefully before use and retain them for future reference. This device is designed to alert you to water leaks or overflows, helping to prevent potential damage.
Product Overview
The Walfront Water Leak Detector is a compact and highly sensitive device designed to detect the presence of water and trigger a loud alarm. It features a main alarm unit and a wired water sensor probe.

Image 1: Walfront Water Leak Detector showing its main unit, wired sensor, and approximate dimensions. The main unit measures 98mm x 46mm x 22mm, and the sensor measures 30mm x 12mm with a 1m wire length.
Features
- High Sensitivity: Equipped with a gold-plated sensor for precise water detection.
- Loud Alarm: Emits a 120dB alarm sound to ensure you are alerted promptly.
- Continuous Alert: The alarm continues until the water is dry or the sensor is deactivated.
- Low Power Consumption: Designed for efficient battery usage.
- Reverse Input Protection: Prevents damage from incorrect battery installation.
- Versatile Application: Suitable for aquariums, water tanks, kitchens, warehouses, garages, solar water heaters, and other areas prone to water leaks.
Setup
- Install Battery:
Open the battery compartment cover located on the side of the main unit. Insert one 9V battery (not included), ensuring correct polarity. Close the battery compartment cover securely.

Image 2: The open battery compartment of the Walfront Water Leak Detector, ready for a 9V battery.
- Position the Main Unit:
Place the main alarm unit in a dry location, away from direct contact with water. Ensure the alarm speaker is not obstructed.
- Position the Sensor Probe:
Place the wired water sensor probe in the area where water detection is desired. The sensor should be positioned at the lowest point where water might accumulate or at the desired overflow level. The sensor's gold-plated contacts must be able to come into contact with water.
- Activate the Device:
Locate the ON/OFF switch on the side of the main unit. Slide the switch to the "ON" position to activate the detector.

Image 3: Close-up view of the ON/OFF switch on the side of the Walfront Water Leak Detector.
Operating Instructions
Once the device is set up and activated, it will continuously monitor for water.
- Normal Operation: In the absence of water, the device remains silent.
- Water Detection: When water comes into contact with the sensor probe, the alarm unit will emit a loud 120dB sound.
- Alarm Deactivation: The alarm will continue to sound until the water is removed from the sensor or the device is switched to the "OFF" position.

Image 4: Diagram illustrating the operation of the water leak detector. On the left, the sensor is above the water level, and the alarm is inactive. On the right, the water level reaches the sensor, triggering the alarm.
Maintenance
- Battery Replacement: Replace the 9V battery annually or when the alarm sound becomes weak.
- Sensor Cleaning: Periodically inspect the sensor probe for dirt or debris. Clean the gold-plated contacts with a soft, dry cloth if necessary. Avoid using abrasive cleaners.
- Testing: It is recommended to test the device monthly by placing the sensor in a small amount of water to ensure it is functioning correctly.
- Storage: If storing the device for an extended period, remove the battery to prevent leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Alarm does not sound when water is detected. |
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| Alarm sounds continuously without water. |
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| Alarm sound is weak. |
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Specifications
| Brand: | Walfront |
| Model: | B075YGXPPF |
| Power Source: | 1 x 9V Battery (not included) |
| Alarm Sound Level: | 120 dB |
| Sensor Technology: | Water detection sensor (gold-plated) |
| Main Unit Dimensions: | Approx. 98mm x 46mm x 22mm |
| Sensor Dimensions: | Approx. 30mm x 12mm |
| Sensor Wire Length: | Approx. 1 meter |
| Origin: | China |
Warranty Information
Specific warranty details for this product are not provided in the available information. Please refer to the retailer's website or contact Walfront customer support directly for warranty terms and conditions.
Support
For technical assistance, troubleshooting beyond this manual, or general inquiries, please contact Walfront customer support through their official website or the retailer from whom you purchased the product.