SW3L-LS Solar-Powered LoRaWAN Water Flow Sensor

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

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

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

The LoRa wireless technology used in SW3L-LS allows the device to send data and reach extremely long ranges at low data rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.

SW3L-LS supports BLE configuration and wireless OTA update which makes users easy to use.

Solar-powered +  Li-ion battery powers SW3L-LS, designed for long-term use for up to 5 years.

Each SW3L-LS is pre-loaded with a set of unique keys for LoRaWAN registrations, register these keys to the local LoRaWAN server and it will auto-connect after power on.

Features:

LoRaWAN v1.0.3 Class A protocol

Bands:CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864

Ultra-low power consumption

Upload water flow volume

Monitor water waste

AT Commands to change parameters

Supports Datalog feature

Support Bluetooth v5.1 and LoRaWAN remote configure

Support wireless OTA update firmware

Uplink on periodically and open/close event

Downlink to change configure

Solar panel + 3000mAh Li-ion battery

Specifications:

Common DC Characteristics:

Supply Voltage: built-in battery, 2.5v ~ 3.6v

Operating Temperature: -40 ~ 85°C

LoRa Spec:

Frequency Range,  Band 1 (HF): 862 ~ 1020 Mhz

Max +22 dBm constant RF output vs.

RX sensitivity: down to -139 dBm.

Excellent blocking immunity

Battery:

Solar panel + 3000mAh Li-ion battery

Capacity: 3000mAh

Self-Discharge: <1% / Year @ 25°C

Max continuous current: 130mA

Max boost current: 2A, 1 second

Power Consumption:

Sleep Mode: 5uA @ 3.3v

LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

Applications: 

 Flow Sensor application

 Water Control

 Toilet Flow Sensor

 Monitor Wastewater

Package Includes:

SW3L-LS Water Flow Sensor x 1 

Dimension and weight:  

Package Size: 14.5 * 10 * 5 cm

Weight / pcs: 290 g

Order Infor

Part Number: SW3L-LS-XXX-YYY

XXX: The default frequency band

AS923: LoRaWAN AS923 band

AU915: LoRaWAN AU915 band

EU433: LoRaWAN EU433 band

EU868: LoRaWAN EU868 band

KR920: LoRaWAN KR920 band

US915: LoRaWAN US915 band

IN865: LoRaWAN IN865 band

CN470: LoRaWAN CN470 band

YYY: 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

Useful Link:

Datasheet

User Manual

Certificate

Firmware