“There’s a leak somewhere in this room” is not useful information when servers are at risk. Knowing exactly where — down to the meter — is what separates a five-minute fix from an hour of frantic searching while water keeps spreading. HazenFire AT-LD101 doesn’t just detect leaks. It tells you exactly where to go.
The Real Problem with Water Leakage in Critical Facilities
Water leakage ranks among the most common — and most underestimated — risks in critical equipment rooms. A small leak from an air-conditioning pipe, water supply line, drainage system, or battery area can trigger equipment failure, system downtime, asset damage, or genuine safety hazards.
But here’s what most facility teams discover too late: simply knowing “there is a leak” isn’t enough.
Engineers need to know where the leak is occurring, how fast the alarm reaches them, and whether that signal can connect seamlessly into a BMS, PLC, fire alarm panel, or remote monitoring platform. Generic leak alarms leave maintenance teams searching blindly while water continues to spread.
This is exactly the gap a locating leak detection alarm module is designed to close.
HazenFire AT-LD101 works with conductive leak sensing cable to detect leakage, activate alarm output, and — critically — display the precise leak location on its LCD in meters, the moment conductive liquid (water or electrolyte) touches the sensing cable.
What Exactly Is a Locating Leak Detection Alarm Module?
A locating leak detection alarm module is a monitoring device that works in tandem with leak sensing cable installed throughout the protected area — under raised floors, around equipment bases, near water pipes, around air-conditioning units, or inside cable trench routes.
Here’s the fundamental difference from traditional detection: a point-type water leak detector only monitors one small, fixed location. A locating leak detection module monitors an entire cable route and pinpoints the approximate leak position along that route — turning a vague alarm into actionable intelligence.
HazenFire AT-LD101 supports leak sensing cable up to 1,500 meters. The moment leakage occurs, the LCD displays the exact leak location in meters — letting maintenance staff head directly to the problem area instead of searching room by room.
How HazenFire AT-LD101 Works
The module continuously monitors the condition of its connected leak sensing cable, operating on 24 VDC power.
Normal condition: The LCD displays “—-” — confirming no leak, no fault, system healthy.
Leak detected: The moment conductive liquid contacts the sensing cable, the module immediately turns on the red Leak indicator, activates the alarm relay output, and displays the precise leak location on the LCD.
Cable fault detected: If the sensing cable is broken, shorted, or incorrectly wired, the module shifts to fault indication — the yellow Service indicator illuminates and the LCD displays “FFFF”. This fault supervision capability matters enormously: it tells you whether your leak detection cable is actually still functioning, rather than silently failing while you assume you’re protected.
Why Leak Location Changes Everything
In a critical equipment room, water doesn’t stay put. It spreads under raised floors, behind cabinets, along cable trenches, and around pipework — often invisibly, until the damage is already extensive.
A system that only provides a general “leak detected” alarm leaves maintenance staff facing exactly the problem they can’t afford: a long, frantic search for the source while water keeps spreading.
This is where location data transforms response time.
With HazenFire AT-LD101, the LCD displays leak position in meters. If the screen reads “358,” the leak sits approximately 358 meters from the start of the sensing cable — no guesswork required.
What This Means in Practice
- Find the leak point faster — minutes instead of hours
- Reduce troubleshooting time dramatically
- Avoid unnecessary equipment shutdown while searching
- Respond before water spreads further into the facility
- Improve overall maintenance efficiency
For data centers, UPS rooms, battery rooms, archives, warehouses, and smart buildings, this single capability can be the difference between a minor incident and a major outage.
Key Features of HazenFire AT-LD101
1. Locating Leak Detection
AT-LD101 goes beyond simple leak detection — it pinpoints the leak position and displays it in meters directly on the LCD, dramatically simplifying the maintenance team’s search.
2. Supports Up to 1,500 m Sensing Cable
This extensive range makes the module equally suited to compact equipment rooms and sprawling facilities — warehouses, data centers, cable trenches, and building pipe networks alike.
3. Fast Response
Response time of ≤ 8 seconds ensures action can be taken before leakage has any meaningful opportunity to spread toward critical equipment.
4. Alarm and Fault Relay Outputs
| Output Type | Behavior |
|---|---|
| Alarm output | Normally open, closes when leakage is detected |
| Fault output | Normally closed, opens on cable fault or wiring fault |
Both relay outputs connect cleanly to alarm panels, BMS systems, PLC systems, or local warning devices. For higher-current applications, an interposing relay should be used — the module’s relay output is not designed to directly drive high-current or high-voltage equipment.
5. RS-485 MODBUS-RTU Communication
Full RS-485 communication with MODBUS-RTU protocol means AT-LD101 integrates directly into BMS platforms, PLC systems, remote monitoring tools, and intelligent building management systems. Through this connection, the system can read module status, leak location, cable condition, and alarm sensitivity in real time.
6. DIN35 Rail Mounting
Standard DIN35 rail mounting makes installation straightforward inside electrical cabinets, control panels, or dedicated monitoring enclosures.
Note: The module itself is not waterproof and should be installed indoors or within a suitable protective enclosure where exposure risk exists.
Where HazenFire AT-LD101 Gets Deployed
Data Centers and IDC Rooms
Data centers concentrate servers, UPS systems, network equipment, power distribution cabinets, and cooling systems in dense configurations — making water leakage from air-conditioning units, chilled water pipes, drainage lines, or raised floor areas a genuine downtime threat.
Typical sensing cable placement:
- Under raised floors
- Around air-conditioning units
- Near water pipes
- Around UPS areas
- Along server room perimeter zones
UPS Rooms and Battery Rooms
Stable, safe operation is non-negotiable in UPS and battery rooms. Leakage from nearby pipes, floor water, or battery electrolyte introduces real safety risk alongside electrical equipment exposure. AT-LD101 monitors conductive liquid leakage while providing both local alarm output and remote BMS/PLC communication — making it a strong fit for power rooms, battery rooms, UPS rooms, and broader electrical support areas.
Smart Buildings
With native RS-485 MODBUS-RTU support, AT-LD101 fits naturally into intelligent building monitoring architecture, covering equipment rooms, mechanical rooms, pipe corridors, pump rooms, air-conditioning areas, and basement utility zones — feeding leak and fault information directly to the building management system for centralized oversight.
Museums, Archives and Libraries
Where institutions store irreplaceable documents, books, cultural items, and historical records, water damage can mean permanent, irreversible loss. Locating leak detection identifies the problem early — and pinpoints exactly where — before water causes damage that no amount of budget can undo.
Warehouses and Storage Areas
Large warehouses present long pipe routes, expansive floor areas, and numerous storage zones — conditions where a single point-type detector simply can’t provide adequate coverage. AT-LD101’s long sensing cable support enables monitoring across much larger areas, with rapid identification of exactly which section needs attention.
HazenFire AT-LD101 vs. Traditional Point-Type Water Leak Detector
| Comparison Point | Traditional Point-Type Detector | HazenFire AT-LD101 |
|---|---|---|
| Detection method | Detects leakage at one fixed point | Detects leakage along entire sensing cable |
| Coverage area | Small, localized area | Up to 1,500 m sensing cable |
| Leak location | Usually not available | LCD displays exact location in meters |
| Fault supervision | Limited | Full cable break and wiring fault alarm |
| System integration | Basic alarm output only | Relay output + RS-485 MODBUS-RTU |
| Typical use case | Small, localized water monitoring | Data centers, UPS rooms, battery rooms, warehouses, smart buildings |
On-Site Testing: Confirming Reliable Operation
After installation, power on the module and allow approximately one minute for initialization. In normal condition, the Power indicator illuminates and the LCD displays “—-“.
To run a leak test: Immerse a section of the sensing cable in a small amount of water for 5–8 seconds. The Leak indicator activates, the relay output engages, and the LCD displays the precise leak location in meters.
After testing, remove the sensing cable from water and allow it to dry fully. Clear the alarm by pressing the Reset button, or via a network reset command if the module is integrated into a monitoring system.
Why Choose HazenFire AT-LD101?
For critical facilities, leak detection needs to be reliable, easy to integrate, and easy to maintain — not an afterthought bolted onto your infrastructure. HazenFire AT-LD101 combines leak detection, leak location display, alarm relay output, fault relay output, and RS-485 MODBUS-RTU communication into one compact, dependable module.
It’s built for projects that need more than a basic water leak alarm — projects where engineers need to detect the leak, locate the exact point, monitor cable integrity continuously, and connect every signal to BMS, PLC, alarm panels, or remote monitoring systems without friction.
With long-distance sensing cable support, fast response, precise LCD location display, and full communication capability, HazenFire AT-LD101 delivers a genuinely practical leak detection solution for data centers, UPS rooms, battery rooms, warehouses, archives, smart buildings, and every other critical equipment area where water damage simply isn’t an option.
Know there’s a leak. Know exactly where. Act before it spreads.
HazenFire — Precision Leak Detection. Protecting What Can’t Be Replaced.
