The Dragino SW3L-NB is a NB-IoT Flow Sensor. It detects water flow volume and uplink to IoT server via NB-IoT network. User can use this to monitor the water usage for buildings.

The SW3L-NB will send water flow volume every 20 minutes. It can also detect the water flow status and send Alarm, to avoid the waste for water usage such as broken toilet case.

SW3L-NB is designed for both indoor and outdoor use. It has a weatherproof enclosure and industrial level battery to work in low to high temperatures.

SW3L-NB supports different uplink methods including MQTT, MQTTs, UDP & TCP for different application requirement, and support uplinks to various IoT Servers.

SW3L-NB supports BLE configure and OTA update which make user easy to use.

SW3L-NB is powered by 8500mAh Li-SOCI2 battery, it is designed for long-term use up to several years.

SW3L-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.

Features: 

• NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
• Ultra-low power consumption
• Upload water flow volume
• Monitor water waste
• Multiply Sampling and one uplink
• Support Bluetooth v5.1 remote configure and update firmware
• Uplink on periodically
• Downlink to change configure
• 8500mAh Battery for long term use
• Nano SIM card slot for NB-IoT SIM 

Applications: 

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

Specifications:

Common DC Characteristics:

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

NB-IoT Spec: 

NB-IoT Module: BC660K-GL 

Support Bands: 

• B1 @H-FDD: 2100MHz
• B2 @H-FDD: 1900MHz
• B3 @H-FDD: 1800MHz
• B4 @H-FDD: 2100MHz
• B5 @H-FDD: 860MHz
• B8 @H-FDD: 900MHz
• B12 @H-FDD: 720MHz
• B13 @H-FDD: 740MHz
• B17 @H-FDD: 730MHz
• B18 @H-FDD: 870MHz
• B19 @H-FDD: 870MHz
• B20 @H-FDD: 790MHz
• B25 @H-FDD: 1900MHz
• B28 @H-FDD: 750MHz
• B66 @H-FDD: 2000MHz
• B70 @H-FDD: 2000MHz
• B85 @H-FDD: 700MHz

Battery:

• 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: 

• STOP Mode: 10uA @ 3.3v
• Max transmit power: 350mA@3.3v 

documents:

• DataSheet, Document Base
  
• User Manual -- Online Latest
• Shared Folder for all Dragino Products

Flow Sensor Model

• 004: DW-004 Flow Sensor: diameter: G1/2” / DN15. 450 pulse = 1 L
• 006: DW-006 Flow Sensor: diameter: G3/4” / DN20. 390 pulse = 1 L
• 010: DW-010 Flow Sensor: diameter: G 1” / DN25.   64 pulse =   1 L 
• 020: DW-020 Flow Sensor: diameter: G 2” / DN50 12 pulse =   1 L