SW3L-LB DN15 G1/2 LoRaWAN Flow Sensor 868MHz

The SW3L-LB by Dragino is a LoRaWAN flow sensor specifically designed to monitor water consumption in buildings. It sends data about water flow to the IoT server every 20 minutes. The sensor can also detect the status of water flow and send alarm messages to prevent water waste, such as that caused by faulty toilets. This robust sensor node, enclosed in a weatherproof housing, is ideal for outdoor use and powered by an 8500mA Li/SOCl2 battery, ensuring long operation time. The SW3L-LB is not just 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 data transmission over very long distances at low data rates. This ensures outstanding range, high interference resistance, and optimizes power consumption. Equipped with a powerful 48 MHz ARM microcontroller, 256KB Flash, and 64KB RAM, the SW3L-LB is ready for all types of projects. The SW3L-LB has an integrated BLE module allowing convenient configuration of the sensor 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 and application software. You can use the pre-installed software for your IoT projects or flexibly adapt the software to different requirements.

Each sensor is 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 once powered on, if network coverage is available.

Recommended Accessories: 

• Lora Gateway

Features:

• G1/2 inch thread DN15
• 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 time
• IP65 waterproof
• Optimized enclosure with new pressure equalization screw
• External LoRa antenna

Application Examples:

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

Links and Downloads:

• Dragino Wiki

Technical Specifications:

• Manufacturer: Dragino
• Manufacturer SKU: SW3L-LB-EU868-004
• Thread: G1/2 inch thread DN15
• 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-004:
• Diameter: G1/2 inch / DN15
• 450 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 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: 294.7g

Scope of Delivery:

• 1x SW3L-LB DN15 G1/2 LoRaWAN Flow Sensor 868MHz
• 1x External 868MHz Antenna