WLD2: 4 zones (Water Leak Detector) with LAN / WiFi

WLD2 is a WiFi / Ethernet water leak detector with support for WWW, SNMP, e-mails, and PoE. Alarms are triggered by even the smallest volumes of liquids that touch the WLD sensing cable anywhere along the entire length of the cable, such as condensation from A/C pipes or water leaks in general. You will receive alarms before costly damages occur. In addition to water alerts, the device also detects disconnected or damaged sensing cables for increased reliability.

WLD2 supports zone creation, 4 WLD zone inputs for external WLD detecting cables can be connected to the WLD2 to help locate the leak more accurately. A different phone number can be called for each zone.

Thanks to WiFi connectivity, the WLD2 water leak detector can be installed in remote places. In case of flooding, it can send an alert via e-mail, SNMP trap, or the SensDesk cloud. With an external SMS gateway by HW group, it can send a text message or dial a phone number. Of course, in critical applications, it can also communicate via wired Ethernet and can be powered with PoE.

WLD2 can be connected to the SensDesk portal, as well as to standard monitoring systems thanks to SNMP and SNMP Trap support. Water occurrence can be also signaled by switching a remote output (e.g. to start a siren) over the network (Box-2-Box mode with a Poseidon2 or Damocles2 unit), independently for each sensing cable. SensDesk Technology completes the HWg monitoring Ecosystem (sensors + devices + SensDesk Technology portal) and gets you long-term reliable alertsgraphsPDF reports, open APIremote device management, etc.

The right Water Detection and early alert are essential in a lot of businesses, for example, data centers, etc. Water Leak Detection System from HW group is a complex solution developed to protect your facility against costly water damage that might threaten you.

>> Read the article about Water Leak Detection (WLD) System.

  • Intuitive WWW interface for fast and easy installation.
  • Support for automatic network configuration via DHCP.
  • Ability to communicate over WiFi (external antenna for extended range, support for 2.4GHz, 2.11 b/g/n) and Ethernet at the same time.
  • Up to 4 detection zones (each max. 185m), the source of the leak can be identified more easily.
  • WLD2 signals the following states: OK / Flooded / Sensing cable fault.
  • Flooding alerts can be send as a standard e-mail, or as a text message (SMS) through a SMS gateway.
  • Detected leaks or WLD sensing cable disconnections can be signaled by activating a relay output at a Poseidon2 or Damocles2 unit over the Ethernet.
  • WLD2 can be easily mounted on a wall or in a 19" cabinet.
  • Powered over PoE or from an external adapter.
Applications and usage: 

• Water detection under raised floors.
• Leaky pipe detection (cable wrapped along the pipe).
• Protection against floods from skylights – sensing cable routed along the walls.
• Detection of water leaks in drip trays.
• Detection of water leaks under air-conditioning outlets.


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WLD sensing cable

WLD sensing cable detects liquid along the entire length of the sensing cable. Even a few drops of water, ethylene glycol, or other conductive liquid trigger the alarm. WLD sensing cable is re-usable (cable can be cleaned, dried & used again).

WLD sensing cable features

  • No Bend limit: WLD sensing cable is not limited by any bending radius. 
  • No Twist limit: WLD sensing cable can be twisted as any other electrical cable. 
  • No Grip limit: Water detection functionality is not limited by point pressure within a reasonable range.
  • No Cable detection: Damaged or disconnected WLD sensing cable is indicated.

WLD cable components

WLD sensing cable is supplied in length from 2m to 50m and can be extended by non-sensing WLD prolong cable.

WLD2 supports up to 4 independent sensing cables. This makes it easier to locate the source of the leak. Each detection circuit can consist of up to 85m of sensing cable + up to 100m of connecting cable.

WLD2 installation and creation of zones

  • easy and fast installation thanks to an intuitive web interface; support for automatic network configuration via DHCP
  • supports creating up to 4 WLD zones so that the source of the leak can be identified more easily
  • each zone can be up to 185 m long

WLD2 supports creating up to 4 independent WLD zones

WLD2 communication and alerting possibilities



Why is Water Leak Detection system better than Flood detector

Water Leak detection vs. Flood detectionWater Leak Detection with the sensing cable is more expensive than simple spot water detection. However, WLD provides a much faster reaction to any water in the room. Thanks to the early alert significant damages to IT or other infrastructure can be avoided. Water Leak Detection with sensing cable is recommended in IT, data centers, technology, the medical sector, or anywhere else, where any water damage would be highly expensive.

Proper Water Leak Detection with a sensing cable helps you avoid costly damages thanks to an early alert that is triggered by the first few drops of liquid. Learn more about the difference between the WLD system with sensing cable and water spot detection in the application note.

 >> Water Detection: Sensing cable versus Flood sensor


Compare Water Leak Detection devices 

Compare WLD devices

HWg Video Flyer about WLD2 device

Water Leak Detection system components

HWg Video about Water Leak Detection system and it's components

Read the Knowledge Base article about the heart of the WLD system - Sensing Cable A.

Read the Knowledge Base article about components of the WLD system by HW group.

Read the Knowledge Base article about the difference between Water Spot Detection and WLD Zone Detection.

Read the Knowledge Base Article about the top selling WLD components: Sensor WLD Relay 1W-UNI.

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WLD sensing cable A

WLD sensing cable type A. Water is detected along the entire length of the WLD sensing cable.

WLD prolong cable A

Prolong non-sensitive cable 5m for WLD type A. Can be extended to up to 100m in total.

WLD connection cable A

Connection cable for connecting WLD device with WLD sensing cable.


1x Water Leak Detection zone (sensing cable) to the portal. Internal battery, NB-IoT cellular network connectivity, portal required.


1x Water Leak Detection zone (sensing cable) to the portal. LAN and WiFi connectivity, IoT Monitoring unit (Portal required).