NB-WLD Narrowband IoT Water Leakage Detectors

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The NB-WLD Narrowband IoT Water Leakage Detector can detect water leaks using a moisture-sensing cable which can be up to 85m in length. The total cable run can be extended to 185m using an 85m sensing cable and a 100m connecting cable. The sensing cable is very sensitive and can detect conductive liquid droplets and can be used to detect condensation and prevent damage from small water leaks and adverse environmental conditions. The NB-WLD is powered by an external power source and has an internal battery (3year life). The NB-WLD is supplied with a pre-paid 3year NB SIM which can be topped up.

NB-WLD devices can be monitored using the HWg Cloud or SensDesk Cloud portals, and the portals configured to send email alerts to a distribution list when there is a water leakage alarm. Text messages (SMS) can also be sent via HWg Cloud or SensDesk using an email-to-SMS text service.

NB-WLD Set Kit

The NB-WLD is supplied with a power adapter and a 2+2m water leakage detection cable.

Key Features

  • Protocols: COAP and DTLS
  • Power: 5Vdc or battery
  • Simple installation and supports DHCP
  • Embedded WEB server
  • Security protected with a password
  • Works with the HWg Cloud and SensDesk Cloud portals


  • Leaking pipe detection (cable wrapped along the pipe)
  • Flood detection in an area: WLD detection cable can be laid along the walls in a room
  • Under raised floors leakage detection
  • Above suspended ceilings leakage detection
  • Detection of water leaks in drip trays
  • Detection of water leaks under air-conditioning outlets
  • Detection of a water flood in a freezing or cooling plant



Physical Installation

  • Metal Case: IP40
  • Installation: Flat surface, wall or DIN
  • Design: Industrial and IT environments

Operation Schematic

Sensdesk with NB-2x1Wire and SensDesk installation

See the features and protocols comparison table to compare this product to similar environmental monitoring devices.