SD-WLD: Water leak detector with Ethernet and WiFi

SD-WLD is a simple detector that detects water leaks using a moisture-sensing cable. It allows connecting 1 sensing cable of up to 85m length. The total wiring length can be up to 185m (85m sensing cable + 100m connecting cable).

The sensing cable detects as little as a few drops of conductive liquid, so it can be also used to detect condensation. 

Thanks to early detection and alerting, SD-WLD can prevent substantial damages caused by unexpected adverse environment conditions.

For configuration, SD-WLD features a built-in web server and WiFi connectivity. The device can be monitored remotely over the Internet using the free SensDesk portal and the SensDeskMobile app.  

If the device is correctly configured in the SensDesk portal, it can send an e-mail alert whenever the specified range of values is exceeded. If you also use our SMS-GW3 together with the portal, the alerts can be also sent as text messages (SMS).  

  • Wired Ethernet as well as WiFi - 802.11 b/g/n (2.4GHz)
  • Support for simultaneous Ethernet and WiFi operation (for easy setup)
  • 5V or PoE power
  • Simple installation, supports DHCP
  • Embedded WEB server
  • Security protected with a password
  • Support for the SensDesk portal
Applications and usage: 
  • Leaky pipe detection (cable wrapped along the pipe)
  • Flood detection in an area: WLD detection cable laid along the walls in a room
  • Under raised floors
  • Above suspended ceilings
  • Detection of water leaks in drip trays
  • Detection of water leaks under air-conditioning outlets
  • Detection of water flood in a freezing or cooling plant

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2D area flood detection requires the installation of a detection cable in a place where water will likely be located after leakages from various sources of flooding (cracked water pipes, glycol from the cooling system, wastewater).

HW group offers several products that provide ideal solutions for flood and water leak detection.

See the table below and discover the best solution for your situation:




Detection zones

1 4 1 1

Max length of WLD sensing detection cable

85m 85m 85m 85m

Max length of WLD extension cable

100m 100m 100m 100m

LAN (RJ45)


Connection to the SensDesk Portal

Alert for broken LAN / WiFi connection

SensDesk / HWg-Trigger SensDesk

1Wire-UNI output (RJ11)

Relay output

Flood / torn cable indication


 It works with remote relay

Poseidon2 / Damocles SensDesk


Recommended products

WLD sensing cable A - 2+10m

Water leak detection cable A - 2+10m for use with HWg-WLD and HWg-WLD Relay.

WLD A connection cable 2m

2m connection cable for connecting HWg-WLD with WLD - A cable.

WLD sensing cable A - 2+50m

Water leak detection cable A - 2+50m for use with HWg-WLD and HWg-WLD Relay.

WLD sensing cable A - 2m

Water leak detection cable A - 2m for use with HWg-WLD and HWg-WLD Relay.

WLD A prolong cable 5m

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