SW3L-LB DN25 G1 LoRaWAN Flow Sensor 868MHz

The SW3L-LB from Dragino is a LoRaWAN flow sensor specifically designed for monitoring water consumption in buildings. It sends data about the water flow 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, like that which can occur in malfunctioning toilets. This robust sensor node, packed in a weatherproof housing, is ideal for outdoor use and is powered by an 8500mA Li/SOCl2 battery, ensuring a long operating time. The SW3L-LB not only acts as a simple sensor node but is specially designed to facilitate the rapid implementation of industrial LoRa and IoT applications. The wireless part of the node is based on the SX1262, enabling data transmission over very long distances at low data rates. This ensures an exceptionally wide range, high interference resistance while optimizing 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 has an integrated BLE module that allows convenient sensor configuration from your mobile phone. It also supports OTA updates via a private LoRa protocol, which significantly simplifies maintenance. This sensor node is the third generation of the popular SW3L from Dragino and provides a mature LoRaWAN stack and application software. Use the preinstalled software for your IoT projects or adapt the software flexibly to different 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 automatically connects after powering on, provided network coverage is available.

Recommended accessories: 

• Lora Gateway

Features:

• G1 Inch Thread DN25
• 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 operating time
• Waterproof to IP65
• Optimized housing with new pressure compensation fitting
• 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-EU868-010
• Thread: G1 inch thread DN25
• 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-010:
• Diameter: G1 inch / DN25
• 64 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: 422.7g

Scope of delivery:

• 1x SW3L-LB DN25 G1 LoRaWAN flow sensor 868MHz
• 1x External 868MHz antenna