WL03A-NB - NB-IoT Rope Type Water Leak Detector


The Dragino WL03A-NB is a sophisticated NB-IoT Rope Type Water Leak Controller, perfect for detecting leaks in bathrooms, kitchens, hotels, and other key areas. With its sensitive water leak cable, it promptly indicates leaks and communicates the information via the NB-IoT network. Integrated seamlessly with Telemetry2U, it offers instant alerts and real-time dashboard monitoring. The device's long battery life and simple configuration options, including an optional built-in SIM card, make it a reliable asset protection solution.

New customers will enjoy 60-Day's FREE access on Telemetry2Us' IoT Platform. Read more here...

Manufacturer: Dragino
$175- +GST
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Innovative Water Leak Detection


The Dragino WL03A-NB revolutionises water leak detection. By laying the sensitive water leak cable along potential risk areas, it provides accurate and immediate detection of water leakage, essential for preventing damage in various settings.

Telemetry2U Integration for Enhanced Monitoring: Integrated with Telemetry2U, this controller not only detects leaks but also offers instant alerts via email, SMS, and voice calls. Its real-time dashboard feature allows for continuous monitoring, ensuring prompt response to any leakage events.

Designed for Versatile Use: Suitable for bathrooms, kitchens, hotels, and for protecting valuable assets, the WL03A-NB is a versatile solution for various environments.

Regular Updates and Reliable Alerts: The device sends data every 2 hours and immediately reports any water leak events. It also records the number of leaks and the duration of the last leak, providing valuable insights for maintenance and prevention.

Flexible Connectivity Options: Supporting diverse uplink methods like MQTT, MQTTs, UDP, and TCP, the WL03A-NB is compatible with multiple IoT servers, catering to different application needs.

User-Friendly Configuration: With features like BLE configuration and OTA updates, the WL03A-NB is easy to use, simplifying device management and ensuring that users are always up-to-date.

Long-Term Battery Life: Powered by an 8500mAh Li-SOCI2 battery, the controller is designed for several years of use, reducing maintenance needs and ensuring continuous operation.

Simple and Efficient Setup: The optional built-in SIM card and default IoT server connection offer a plug-and-play experience, making the setup process straightforward and efficient.





Choose the 12-Month Subscription with Telstra SIM



When you select one of the "12-month IoT Platform Subscriptions", we'll handle all necessary configurations for seamless integration into Telemetry2U's IoT platform. If you also ordered a Telstra 500KB NB-IoT SIM card with your device, That'll also be installed and configured prior to shipment. The SIM card is locked to the device and the data capped at 500KB, so there is no chance of any suprise charges. 

IoT Platform Features

Check out a Live Demo of the Telemetry2U IoT Platform in Action

See how easy it is to add your own Dragino NB-IoT Devices to Telemetry2U

Attribute name Attribute value


  • NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
  • Ultra-low power consumption
  • Upload water flow volume
  • Water Leak detect
  • Multiply Sampling and one uplink
  • Support Bluetooth v5.1 remote configure and update firmware
  • Uplink on periodically
  • Downlink to change configure
  • 8500mAh Battery for long term use
  • Nano SIM card slot for NB-IoT SIM 


  • Smart Buildings & Home Automation
  • Smart Cities
  • Smart Factory 

Common DC Characteristics:

  • Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~ 3.6v
  • Operating Temperature: -40 ~ 85°C


NB-IoT Spec: 

NB-IoT Module: BC660K-GL 

Support Bands: 

  • B1 @H-FDD: 2100MHz
  • B2 @H-FDD: 1900MHz
  • B3 @H-FDD: 1800MHz
  • B4 @H-FDD: 2100MHz
  • B5 @H-FDD: 860MHz
  • B8 @H-FDD: 900MHz
  • B12 @H-FDD: 720MHz
  • B13 @H-FDD: 740MHz
  • B17 @H-FDD: 730MHz
  • B18 @H-FDD: 870MHz
  • B19 @H-FDD: 870MHz
  • B20 @H-FDD: 790MHz
  • B25 @H-FDD: 1900MHz
  • B28 @H-FDD: 750MHz
  • B66 @H-FDD: 2000MHz
  • B70 @H-FDD: 2000MHz
  • B85 @H-FDD: 700MHz



  • Li/SOCI2 un-chargeable battery
  • Capacity: 8500mAh
  • Self-Discharge: <1% / Year @ 25°C
  • Max continuously current: 130mA
  • Max boost current: 2A, 1 second


Power Consumption: 

  • STOP Mode: 10uA @ 3.3v
  • Max transmit power:  350mA@3.3v
Package contents

Package Includes:

  • WL03A-NB x 1
  • 1 x 1m water lead cable
  • 1 x termination end

DataSheet, Document Base

User Manual -- Online Latest

Shared Folder for all Dragino Products