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

The SW3L-LB from Dragino is a LoRaWAN flow sensor specifically designed for monitoring water consumption in buildings. It sends water flow data to the IoT server every 20 minutes. The sensor can also detect the status of the water flow and send alarm messages to prevent water waste, such as that caused by defective toilets. This robust sensor node, encased in a weatherproof housing, is ideal for outdoor use and powered by an 8500mA Li/SOCl2 battery, ensuring long operational life. The SW3L-LB not only serves as a simple sensor node but is specifically designed to facilitate the rapid deployment of industrial LoRa and IoT applications. The wireless part of the node is based on the SX1262, enabling the transmission of data over very long distances at low data rates. This ensures exceptionally wide range, high interference immunity, and optimizes energy consumption. Equipped with a powerful 48 MHz ARM microcontroller, 256KB Flash, and 64KB RAM, the SW3L-LB is prepared for all kinds of projects. The SW3L-LB has an integrated BLE module that allows for convenient sensor configuration from your mobile phone. It also supports OTA updates via a private LoRa protocol, significantly simplifying maintenance. This sensor node is the third generation of the popular SW3L from Dragino and offers a mature LoRaWAN stack as well as application software. You can use the pre-installed software for your IoT projects or flexibly adapt the software to different requirements.

Each sensor is preloaded with a set of unique keys for LoRaWAN registrations. These keys are registered on the local LoRaWAN server, and the sensor automatically connects upon powering on, provided there is network coverage.

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
• Extremely 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 long operation
• Waterproof according to IP65
• Optimized housing with new pressure equalizing cable gland
• External LoRa antenna

Application Examples:

• Flow sensor applications
• Water control in buildings
• Toilet flow sensors

Links and Download:

• Dragino Wiki

Technical Data:

• 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 against
• RX sensitivity: up to -139 dBm
• Excellent blocking immunity
• Flow Sensor DW-006:
• Diameter: G3/4 inch / DN20
• 390 pulses per 1 liter
• Cable length: 45cm
• Battery:
• Li/SOCI2 non-rechargeable battery
• Capacity: 8500mAh
• Self-discharge: <1% / year @ 25°C
• Maximum continuous current: 130mA
• Maximum pulse 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 Contents:

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