SW3L-LB DN20 G3/4 LoRaWAN Flow Sensor 868MHz

The SW3L-LB by Dragino is a LoRaWAN flow sensor specifically designed for monitoring water consumption in buildings. It transmits data regarding water flow to the IoT server every 20 minutes. The sensor can also detect the status of water flow and send alarm notifications to help avoid water wastage, such as that which can occur with faulty toilets. This robust sensor node, housed within a weatherproof casing, is ideally suited for outdoor use and is powered by an 8500mA Li/SOCl2 battery, guaranteeing a long working lifespan. The SW3L-LB not only acts as a simple sensor node, but has been designed specifically to facilitate the rapid implementation of industrial LoRa and IoT applications. The wireless portion of the node is based on the SX1262, enabling the transmission of data across extremely long distances at low data rates. This ensures exceptionally broad coverage, high interference immunity, while also optimizing its power consumption. Equipped with a powerful 48 MHz ARM microcontroller, 256KB flash, and 64KB RAM, the SW3L-LB is prepared for all types of projects. The SW3L-LB integrates a BLE module which allows for convenient sensor configuration from your mobile device. It also supports OTA updates via a private LoRa protocol, significantly simplifying its maintenance. This sensor node is the third generation of Dragino's popular SW3L which features a mature LoRaWAN stack and application software. You can utilize the pre-installed software for your IoT projects or adapt the software to accommodate a variety of requirements.

Each sensor comes pre-loaded with a set of unique keys for LoRaWAN registrations. These keys are registered on the local LoRaWAN server and the sensor is automatically connected upon activation, provided network coverage is available.

Recommended Accessories: 

• Lora Gateway

Features:

• G3/4 inch thread DN20
• Supports LoRaWAN v1.0.3 Class A protocol
• EU868 Frequency band
• Ultra-low power consumption
• SX1262 LoRa Core
• Exceptionally low power consumption
• Open-source hardware/software
• Easy configuration with AT commands via Bluetooth V5.1, LoRaWAN Downlink, or UART
• Support for wireless OTA firmware update
• Periodic uplink function
• 8500mAh Li/SOCl2 battery for a long operational lifespan
• Waterproof to IP65
• Optimized casing with new pressure equalizing screw connection
• External LoRa antenna

Example Applications:

• Flow sensor applications
• Building water control
• Toilet flow sensors

Links and Downloads:

• Dragino Wiki

Technical Specifications:

• Manufacturer: Dragino
• Manufacturer SKU: SW3L-LB-EU868-006
• Thread: G3/4 inch thread DN20
• Microcontroller:
• MCU: 48 MHz ARM
• Flash: 256KB
• RAM: 64KB
• Supply voltage: 2.5V ~ 3.6V
• Operating temperature: -40 ~ 85°C
• LoRa Specifications:
• Frequency Range: 868MHz / EU868 
• Maximum +22 dBm constant RF output across
• RX Sensitivity: up to -139 dBm
• Excellent blocking immunity
• Flow sensor DW-006:
• Diameter: G3/4 inch / DN20
• 390 pulses correspond to 1 liter
• Cable length: 45cm
• Battery:
• Li/SOCI2 non-rechargeable battery
• Capacity: 8500mAh
• Self-discharge: <1% / Year @ 25°C
• Maximum continuous current: 130mA
• Maximum peak current: 2A, 1 second
• Power Consumption:
• Sleep mode: 5uA @ 3.3V
• LoRa Transmit mode: 125mA @ 20dBm, 82mA @ 14dBm
• Dimension: 127 x 66 x 48mm
• Weight: 315.3g

Package Includes:

• 1x SW3L-LB DN20 G3/4 LoRaWAN Flow Sensor 868MHz
• 1x External 868MHz Antenna