Water leakage is one of the most common risks in critical equipment rooms. A small leak from an air-conditioning pipe, water supply pipe, drainage system, or battery area may cause equipment failure, system downtime, asset damage, or safety problems.
For many projects, simply knowing that “there is a leak” is not enough. Engineers also need to know where the leak occurs, how fast the alarm can be received, and whether the signal can be connected to a BMS, PLC, fire alarm panel, or remote monitoring system.
This is why a locating leak detection alarm module is used.
ANWETECH AT-LD101 is a locating leak detection alarm module designed to work with conductive leak sensing cable. When conductive liquid, such as water or electrolyte, touches the sensing cable, the module detects the leak, activates the alarm output, and displays the leak location on the LCD in meters.
A locating leak detection alarm module is a monitoring device used together with leak sensing cable. The sensing cable is installed along the protected area, such as under raised floors, around equipment bases, near water pipes, around air-conditioning units, or inside cable trench areas.
Unlike a traditional point-type water leak detector, which only monitors a small fixed location, a locating leak detection module can monitor a longer cable route and help identify the approximate leak position.
The ANWETECH AT-LD101 supports leak sensing cable up to 1500 meters. When leakage is detected, the LCD displays the leak location in meters, allowing maintenance staff to find the problem area more quickly.
AT-LD101 works by monitoring the condition of the connected leak sensing cable.
Under normal conditions, the module is powered by 24 VDC and the LCD displays “----”, which means there is no leak and no fault.
When conductive liquid contacts the sensing cable, the module detects the change, turns on the red Leak indicator, activates the alarm relay output, and shows the leak location on the LCD.
If the sensing cable is broken, shorted, or wired incorrectly, the module gives a fault indication. The yellow Service indicator turns on and the LCD displays “FFFF”. This fault supervision function is important because it helps users know whether the leak detection cable is still working properly.
In a critical equipment room, water may spread under raised floors, behind cabinets, along cable trenches, or around pipes. If the system only gives a general leak alarm, maintenance staff may still need a long time to search for the leak source.
Leak location helps solve this problem.
With AT-LD101, the LCD displays the leak position in meters. For example, if the screen displays “358”, it means the leakage is detected around the 358-meter position from the start of the sensing cable.
This helps engineers:
Find the leak point faster
Reduce troubleshooting time
Avoid unnecessary equipment shutdown
Respond before water spreads further
Improve maintenance efficiency
For data centers, UPS rooms, battery rooms, archives, warehouses, and smart buildings, this function can be very valuable.
AT-LD101 does not only detect leakage. It also helps locate the leak position. The LCD display shows the leak location in meters, making it easier for maintenance teams to find the leakage area.
The module supports conductive leak sensing cable up to 1500 meters. This makes it suitable for both small equipment rooms and large-area monitoring applications, such as warehouses, data centers, cable trenches, and building pipe areas.
The response time is ≤ 8 seconds. Fast detection helps users take action before leakage spreads to important equipment.
AT-LD101 provides two relay outputs:
Alarm output: Normally open, closes when leakage is detected
Fault output: Normally closed, opens when cable fault or wiring fault occurs
These relay outputs can be connected to alarm panels, BMS systems, PLC systems, or local warning devices. For higher-current devices, an interposing relay should be used because the relay output must not directly control high-current or high-voltage equipment.
AT-LD101 supports RS-485 communication with MODBUS-RTU protocol. This allows the module to be integrated into BMS, PLC, remote monitoring platforms, and intelligent building systems.
Through MODBUS communication, the system can read important information such as module status, leak location, cable condition, and alarm sensitivity.
The module uses DIN35 rail mounting, which makes it suitable for installation inside electrical cabinets, control panels, or dedicated monitoring enclosures.
The module itself is not waterproof, so it should be installed indoors or inside a suitable protective enclosure when required.
Data centers contain servers, UPS systems, network equipment, power distribution cabinets, and cooling systems. Water leakage from air-conditioning units, chilled water pipes, drainage pipes, or raised floor areas may cause serious downtime.
AT-LD101 can be used with leak sensing cable installed:
Under raised floors
Around air-conditioning units
Near water pipes
Around UPS areas
Along server room perimeter areas
When leakage occurs, the module can detect the leak and show the location, helping maintenance teams respond quickly.
UPS rooms and battery rooms require stable and safe operation. Leakage from nearby pipes, floor water, or battery electrolyte may create safety risks and affect electrical equipment.
AT-LD101 can monitor conductive liquid leakage in these areas and provide both local alarm output and remote communication to BMS or PLC systems.
This makes it suitable for power rooms, battery rooms, UPS rooms, and other electrical support areas.
In smart buildings, water leakage monitoring is often connected to BMS systems. AT-LD101 supports RS-485 MODBUS-RTU communication, making it suitable for intelligent building monitoring.
It can be used in:
Equipment rooms
Mechanical rooms
Pipe corridors
Pump rooms
Air-conditioning areas
Basement utility areas
The module can send leak and fault information to the building management system for centralized monitoring.
Museums, archives, and libraries often store valuable documents, books, cultural items, and important records. Water damage in these environments can be difficult or impossible to recover.
A locating leak detection system helps detect leakage early and locate the problem area before water causes serious damage.
Large warehouses may have long pipe routes, large floor areas, and many storage zones. A point-type water leak detector may not be enough for this type of environment.
With support for long sensing cable, AT-LD101 can monitor larger areas and help users quickly identify the leakage section.
| Comparison Item | Traditional Point-Type Water Leak Detector | AT-LD101 Locating Leak Detection Module |
|---|---|---|
| Detection Method | Detects leakage at one fixed point | Detects leakage along sensing cable |
| Coverage Area | Small local area | Up to 1500 m sensing cable |
| Leak Location | Usually not available | LCD displays leak location in meters |
| Fault Supervision | Limited | Cable break and wiring fault alarm |
| System Integration | Basic alarm output | Relay output + RS-485 MODBUS-RTU |
| Typical Use | Small local water monitoring | Data centers, UPS rooms, battery rooms, warehouses, smart buildings |
After installation, the module should be powered on and allowed about one minute for initialization. In normal condition, the Power indicator is on and the LCD displays “----”.
For a leak test, a section of the sensing cable can be immersed in a small amount of water for 5–8 seconds. The Leak indicator turns on, the relay output activates, and the LCD displays the leak location in meters.
After testing, the sensing cable should be removed from water and dried. The alarm can then be cleared by pressing the Reset button or by using a network reset command if the module is integrated into a monitoring system.
For critical facilities, leak detection should be reliable, easy to integrate, and easy to maintain. AT-LD101 combines leak detection, leak location display, alarm relay output, fault relay output, and RS-485 MODBUS-RTU communication in one compact module.
It is suitable for projects where users need more than a simple water leak alarm. It helps engineers detect the leak, locate the leak point, monitor cable faults, and connect the signal to BMS, PLC, alarm panels, or remote monitoring systems.
With long-distance sensing cable support, fast response, LCD location display, and communication capability, ANWETECH AT-LD101 provides a practical leak detection solution for data centers, UPS rooms, battery rooms, warehouses, archives, smart buildings, and other critical equipment areas.
