The UT662D Water Leak Detector is a mid-to-high-end, multifunctional smart leak detector in the UT662 series. Positioned as a professional-grade pipe leak detection device, it is specifically designed to meet the precise leak detection needs of residential and small commercial settings. As a intelligent digital leak detector based on acoustic principles, the UT662D integrates high-sensitivity sensor technology, digital signal processing, and AI-powered leak detection algorithms, making it the tool of choice for property management, home renovation companies, plumbing and heating technicians, and professional leak detection specialists.
Xi'an Mingxi Taida Information Technology Co., Ltd. brings over 12 years of industry expertise to deliver cutting-edge measurement and control solutions.With progressed computerization forms and strict quality control, we guarantee each item meets the most noteworthy guidelines for proficient applications.
It is one of the most frequently purchased domestic models by property management companies and professional leak detection teams.
Dual 'Listening' and 'Visual' Smart Modes for Precise Leak Location—The UT662D Water Leak Detector utilizes acoustic detection technology at its core, capturing faint vibration signals generated by pipe leaks through high-sensitivity sensors. Combined with real-time visual spectrum analysis and AI-assisted leak detection, it transforms leak location from " 'experience-based judgment' to ‘data-driven’ decision-making, helping users quickly and accurately locate leaks in concealed pipes. This minimizes destructive excavation, significantly reducing repair costs and time."
As urbanization accelerates, urban water supply pipeline networks are becoming increasingly complex. The widespread adoption of residential underfloor heating systems has created new demands for leak detection. Traditional leak detection methods rely on manual expertise, resulting in low efficiency, high error rates, and a tendency to cause unnecessary structural damage. The market urgently requires intelligent leak detection equipment that is easy to operate, provides precise localization, and is reasonably priced. Leveraging years of technical expertise in the testing and measurement field.
The UT662 series comprises five models, forming a comprehensive product lineup that meets the needs of users at all levels:
| Model | Positioning | Screen | Frequency range | Sensor Configuration |
| UT662D | Mid-to-high-end | 7 inch | 1Hz-12000Hz | Vertical + Horizontal |
| UT662C | Intermediate to Advanced | 5 inch | 1Hz-12000Hz | Vertical + Horizontal |
| UT662B | Getting Started | 5 inch | 1Hz-8000Hz | Vertical |
| UT662E | Outdoor Professional Edition | 7 inch | 1Hz-12000Hz | Upright + Horizontal with Base + Listening Rod |
• A flagship model that balances performance and value
• 7-inch large screen meets visualization needs
• Dual-sensor configuration covers the vast majority of indoor detection scenarios
•12 kHz wide frequency response delivers excellent detection results for both metal and non-metal pipes
•Designed for mid-to-high-end users, including professional leak detection technicians, property management companies, and renovation firms
For example, the current situation regarding water leakage in different countries and regions:
•Basement water ingress is relatively rare in developed European countries. If older properties are regularly repaired and maintained, they are generally habitable without issue. However, if a property is not well maintained, the interior condition can be very poor.
•In Southeast Asian countries and regions, water leakage issues arise due to the local climate of high temperatures, heavy rainfall and high humidity. Buildings, public facilities and drainage systems suffer from varying degrees of leakage, which must be addressed through technical improvements, system upgrades and maintenance management.
Key Product Features-UT662D Water Leak Detector:
Hardware Features
• Processor: High-performance digital signal processing (DSP) chip, real-time FFT spectrum analysis
• Storage Expansion: Supports SD cards for storing data screenshots and audio recordings
Interface Configuration:
• Type-C Port: Charging + PC data transfer
• Sensor Interface: Dedicated aviation connector with orientation markings
• Headphone Jack: 3.5mm standard audio jack
• SD Card Slot
Sensor Systems
Vertical Sensor:
• Applications: Leak detection in most indoor environments, such as floors
• Design Features: Round base, vertical mounting, large contact area, stable signal detection
• Protection Rating: IP66, dustproof and waterproof
Horizontal Sensor:
• Applications: Leak detection in confined spaces, such as walls and under cabinets
• Design Features: Flat design, can be mounted flush against walls or inserted into narrow spaces
• Protection Rating: IP66
Audio System
• Gain Control: 80 dB dynamic range, 10-step adjustment, dedicated physical knob
• Volume Control: 10-step adjustment, dedicated physical knob
• Output: High-fidelity headphone output, mute-on-power-up design
• Recording Function: 10-second single recording, saved to SD card
Performance Characteristics
Detection Performance
• Frequency Bandwidth: 1 Hz – 12,000 Hz ultra-wide frequency response range
Frequency Bands:
• Low-frequency band: 1 Hz – 3,000 Hz (suitable for non-metallic pipes and deeply buried pipes)
• Mid-frequency band: 3,000 Hz – 6,000 Hz (suitable for general metal pipes)
• High-frequency band: 4,500 Hz – 12,000 Hz (suitable for small leaks and close-range precise localization)
• Full-range mode: 1 Hz – 12,000 Hz full-band reception
• Adjustable frequency: Supports sliding adjustment of the frequency range in full-range mode
• Measurement depth: Approximately 100 cm (1 meter) for indoor floor detection; specific depth depends on pipe material, pipe diameter, water pressure, and surrounding environment
Signal Processing
• Gain Range: 80 dB, adjustable in 10 ranks
• Response Time: Real-time response, no signal delay
• Display Modes: Three modes: digital display, bar graph, and line graph
• AI-Assisted Leak Detection: Intelligently analyzes abnormal signals and automatically changes color to alert the user when the effective sound level exceeds the threshold
Noise Immunity
• Multi-band Filtering: Four-band filtering (high, mid, low, and all-pass) effectively eliminates ambient noise
• Digital Noise Reduction: DSP (Digital Signal Processing) suppresses background interference
• Effective Volume Algorithm: Intelligently distinguishes between water leakage signals and ambient noise
Environmental Adaptability
• Operating Temperature: -20°C to +50°C, suitable for climatic variations across northern and southern regions
• Storage Temperature: -40°C to +60°C, withstands extreme temperatures during storage and transportation
• Humidity Range: Operating humidity <85% RH, storage humidity <75% RH
• Safety Standards: Complies with the IEC 61010 international safety standard
Data Recording and Storage Features
• Data Export to PC
• Connect to a computer via a Type-C cable
• Access inspection data such as screenshots and audio recordings stored on the SD card
• Supports data backup, report generation, and case archiving
• Meets the needs of digital operations and maintenance management
Environmental Adaptation Features
Multi-Sensor Adaptation
• Vertical Sensor: Floor detection, stable and reliable
• Horizontal Sensor: Wall and confined space detection, flexible and convenient
Day/Night Mode Switching
• Day Mode: High-brightness display, clearly visible in bright environments
• Night Mode: Low-brightness, soft display, protects eyesight and is non-glare
Wide Temperature Operating Range
• Operating temperature range: -20°C to +50°C
• Works normally outdoors in winters
• Operates stably in high-temperature environments in summers
Model Recommendations
✅Home Users/DIY Enthusiasts: We recommend the UT662B, which meets basic detection needs and offers excellent value for money
✅Renovation Companies/Small Property Management Firms: We recommend the UT662C, featuring a dual-sensor configuration for broader application scenarios
✅Professional Leak Detectors/Medium to Large Property Management Firms: We recommend the UT662D Water Leak Detector, featuring a 7-inch large screen for a superior user experience
✅Municipal/Water Utilities/Primarily Outdoor Operations: We recommend the UT662E, with a 3-meter detection depth and an outdoor listening rod
Comparison with similar products
| Type | UT662D | PQ128A |
| Screen size | 7-inch colour touchscreen | 4.3-inch colour screen |
| Frequency range | 1Hz–12,000Hz | 50Hz–5,000Hz |
| Sensor configuration | Dual sensors (vertical + horizontal) | Single ground sensor |
| AI leak detection | Supported | Supported (Basic version) |
| Spectrum display | Bar chart + line graph | Bar chart |
| Inspection mode | 16 points | 8 points |
| Data storage | SD card + screenshots + audio recording | SD card screenshots |
| Battery capacity | 8000mAh | 4000mAh |
We get it that standard arrangements do not continuously meet one of a kind prerequisites. Our experienced building group gives comprehensive OEM/ODM customization administrations. Whether you require adjusted recurrence ranges, specialized activating alternatives, or custom frame components, we work closely with you to create the idealize arrangement. Our adaptable plan approach guarantees your particular application needs are completely tended to whereas keeping up our quality standards.

Proven Encounter: Over 12 a long time of specialized skill in estimation and control frameworks development.
Expert Designing: Our gifted R&D group ceaselessly innovates to convey cutting-edge arrangements that keep you ahead of industry demands.
Quality Confirmation: Strict fabricating forms and comprehensive testing conventions guarantee dependable, steady performance.
Comprehensive Back: From starting meeting through progressing support, our committed group gives responsive specialized assistance.
Secure Conveyance: Collaborating with trusted coordinations suppliers guarantees secure, followed, and safety net provider shipment of your equipment.
Customer Center: We prioritize your victory with standard follow-ups, fast issue determination, and personalized benefit approaches.


Q: Why it cannot star up?
A: Battery is flat, Connect the charger and try again; Poor battery contact,Send for repair and inspection; System has frozen,Press the reset button to restart;
Q: Why it didn't have signal display?
A: Sensor not connected,Check the sensor connection; Sensor faulty,Replace the sensor and test;Gain too low,Increase the gain;
Q: Why it weak signal, short detection range?
A: Gain set too low, Increase the gain; Incorrect frequency band selected,Switch to the appropriate frequency band; Poor sensor contact,Check that the sensor is positioned securely;
Pipe buried too deep,Make a comprehensive assessment using other methods.

If you are looking for an affordable excellent choice. As the UNI-T UT662D Water Leak Detector product line, the UT662D Water Leak Detector is highly competitive in the mid-range water leak detector market.It doesn't make you pay for features you don't need, yet it fully meets your requirements in terms of key measurement capabilities.
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