SW3L-LB - LoRaWAN Outdoor Flow Sensor


Optimize water management with Telemetry2U's integration of the Dragino SW3L-LB, a LoRaWAN Flow Sensor designed for precise monitoring of water flow, aiding in the efficient usage and conservation in buildings.

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

Live Demo

Manufacturer: Dragino
$135- +GST
Ship to
Shipping Method
Estimated Delivery
No shipping options

The Dragino SW3L-LB LoRaWAN Flow Sensor is an essential tool for modern water management, designed to accurately track water flow volumes and transmit this data via the LoRaWAN network. Perfectly integrated with Telemetry2U, it provides real-time insights into water usage in buildings, promoting efficient consumption and conservation.

Timely Updates and Alarm Functionality: Programmed to send water flow data every 20 minutes, the SW3L-LB ensures consistent and timely monitoring. Additionally, it can detect abnormal water flow patterns, triggering alarms to alert users to potential issues such as leaks or broken fixtures, thus avoiding water wastage. This feature is particularly useful when combined with Telemetry2U's alert systems.

Durable Design for Versatile Use: Engineered for both indoor and outdoor environments, the SW3L-LB boasts a weatherproof enclosure and is equipped to function effectively across a range of temperatures. Its robust design makes it a reliable choice for varied water monitoring applications, aligning with Telemetry2U's diverse IoT capabilities.

Extended Range and Efficient Power Use: Utilizing advanced LoRa wireless technology, the sensor offers ultra-long range communication with minimal power consumption. This ensures reliable data transmission over vast distances, making it a suitable choice for large buildings or complexes when used in tandem with Telemetry2U's platform.

User-Friendly Operation and Longevity: The SW3L-LB supports BLE for simple configuration and OTA updates, enhancing user convenience. Powered by an 8500mAh Li-SOCI2 battery, it promises up to 5 years of continuous operation, in line with Telemetry2U's commitment to long-term, maintenance-free solutions.

Effortless Setup and Seamless Integration: Each SW3L-LB is pre-loaded with unique LoRaWAN registration keys, ensuring a hassle-free setup. Once connected to a local LoRaWAN server, it integrates seamlessly with Telemetry2U's system, providing efficient and real-time water flow monitoring.



Choose the 12-Month Subscription with Telemetry2U



When you select a"12-month Platform Subscription", we take care of the initial setup for you. Your Dragino LoRaWAN with all be shipped with all necessary configurations for seamless integration into Telemetry2U's IoT platform. All you'll need to do is register your account with Telemetry2U and add and your device to your account - it's that easy.

IoT Platform Features

Refer to our Quick Guide to help get started - you'll be up an running in no time!

Attribute name Attribute value


  • LoRaWAN v1.0.3 Class A protocol
  • Bands:CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
  • Ultra-low power consumption
  • Upload water flow volume
  • Monitor water waste
  • AT Commands to change parameters
  • Supports Datalog feature
  • Support Bluetooth v5.1 and LoRaWAN remote configure
  • Support wireless OTA update firmware
  • Uplink on periodically and open/close event
  • Downlink to change configure
  • 8500mAh Battery for long term use


  •  Flow Sensor application
  •  Water Control
  •  Toilet Flow Sensor
  •  Monitor Waste water

Common DC Characteristics:

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


LoRa Spec:

  • Frequency Range,  Band 1 (HF): 862 ~ 1020 Mhz
  • Max +22 dBm constant RF output vs.
  • RX sensitivity: down to -139 dBm.
  • Excellent blocking immunity



  • 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:

  • Sleep Mode: 5uA @ 3.3v
  • LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
Package contents

Package Includes:

  • SW3L-LB Water Flow Sensor x 1 


Dimension and weight:  

  • Package Size: 14.5 * 10 * 5 cm
  • Weight / pcs : 290 g



DataSheet, Document Base

User Manual -- Online Latest

Shared Folder for all Dragino Products