Sensor WLD Relay 1W-UNI

Water leaks pose a significant risk to modern infrastructures. Even a few drops in a server room or data center can lead to short circuits, system failures, or severe consequential damages. The HW-group Sensor WLD Relay 1W-UNI provides a solution designed for reliable water leakage monitoring and protection against water ingress. Its intelligent design combines precise 2D water detection along the entire sensor cable with flexible integration into network and alarm infrastructures.

The WLD Relay 1W-UNI detects not only water but also other conductive liquids such as ethylene glycol. This makes it suitable for a wide range of applications, from IT environments to industrial facilities and building technology. With its relay output (NO/NC), it can directly control external devices such as pumps, alarm sirens, or valves. At the same time, the 1-Wire UNI interface allows integration into HW-group systems such as Poseidon2, Ares, STE2, or Damocles, enabling the sensor to be used both standalone and in large monitoring networks.

A major advantage of the WLD Relay 1W-UNI is its capability for area monitoring. While spot sensors measure only at a single point, the sensor cable of this model covers a length of up to 185 meters. This ensures continuous monitoring along the entire cable – even the smallest amounts are reliably detected. Thanks to its fabric covering, the sensor cable reacts particularly quickly to liquids and provides a prompt alarm. Additionally, the device reports cable interruptions or faulty connections, further increasing operational safety.

Installation is simple and flexible. The sensor cable can be installed under raised floors, secured along pipelines, or affixed with clips, adhesive tape, or similar solutions. Its design allows bending, twisting, or kinking without impairing functionality. After a water alarm, the cable can be cleaned and reused, reducing costs and extending service life.

Key Features of the WLD Relay 1W-UNI

• 2D water detection – liquid detection along the entire cable length (0.4 m to 85 m, extendable up to 185 m)
• Three states – OK, liquid detected, or cable disconnected
• Relay output NO/NC – direct connection of external alarm systems, sirens, or pumps up to 1A / 30V
• 1-Wire UNI interface – integration into systems such as Poseidon2, STE2, Damocles, or the SensDesk Portal
• Reusable sensor cable – easy drying and reuse after water alarm
• Robustness – flexible, durable, and suitable for installations in sensitive and industrial environments
• Remote monitoring – compatible with e-mail, SNMP traps, SMS, or cloud-based alerts

Typical Applications

• Server rooms and data centers: Leak detection under raised floors or near air conditioning systems.
• Industrial facilities: Monitoring of process pipelines and cooling systems (e.g., ethylene glycol).
• Building infrastructure: Protection of basements, archives, museums, or technical rooms from water damage.
• Hotels and residential buildings: Protection of heating or water circuits against leaks.
• Telecommunications facilities: Protection of Base Transceiver Stations (BTS) from penetrating moisture.

Integration into the HW-group Monitoring Ecosystem

The WLD Relay 1W-UNI can be fully integrated into HW-group monitoring solutions. Via the 1-Wire UNI interface, it is compatible with platforms such as the SensDesk Technology Portal, which offers long-term logging, graphical evaluation, and real-time alarm notifications. With services such as e-mail, SNMP, or SMS, alerts can be sent instantly to IT staff or facility managers. Thanks to box-to-box communication, the sensor also works with other HW-group devices, for example to automatically switch relay outputs in Damocles or Poseidon systems.

Set Variants of the WLD Relay 1W-UNI

• Set 1: Base device with one output for a WLD sensor cable (max. 185 m), RJ11 1-Wire UNI or relay output, requires external 12V power supply.
• Set 2: Complete set including WLD sensor cable A (2 m), connection cable (2 m), relay unit, power adapter, and clips for mounting.

What is the difference between the WLD Relay 1W-UNI and a spot sensor?

While spot sensors monitor only a single location, the WLD Relay 1W-UNI monitors an entire area of up to 185 m through its sensor cable, providing a significantly larger protection zone.

Can I reuse the sensor cable after a leakage event?

Yes, the sensor cables are reusable. After a leakage event, they can be cleaned, dried, and easily put back into operation.

How is alarm notification handled within the monitoring network?

Depending on system integration, alarm notifications are sent via e-mail, SNMP trap, SMS gateway, or through direct control of external devices via the relay output.