DRAGINO · Sensor · LoRa · Water Quality Sensor · WQS-LB-EU868

The Dragino LoRaWAN water quality sensor series products are designed to measure water quality and provide information on water quality conditions. They consist of a main process unit (WQS-LB) and various sensors.

The sensors include various types such as: pH sensor, ORP sensor, EC sensor, dissolved oxygen sensor and turbidity sensor.

The main process device WQS-LB is a LoRaWAN RS485 end node for outdoor use, which is powered by a built-in lithium-ion battery. WQS-LB reads values from various sensors and uploads this sensor data to the IoT server via the LoRaWAN radio protocol.

WQS-LB is fully compatible with the LoRaWAN Class C protocol and can work with standard LoRaWAN gateways.

Properties

• LoRaWAN 1.0.3 Class A
• Frequenzbänder: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
• Ultra-low power consumption
• Supports multiple RS485 devices according to flexible rules
• Supports Modbus protocol
• Supports interrupt uplink
• Supports the connection of UART sensors with 3.3 V or 5 V or 12 V
• Supports Bluetooth v5.1 and LoRaWAN remote configuration
• Supports wireless OTA update firmware
• AT commands for changing parameters
• Uplink at regular intervals
• Downlink for changing the configuration
• 8500mAh Li/SOCl2 battery (RS485-LB)

Applications

• Intelligent buildings and home automation
• Logistics and supply chain management
• Intelligent consumption measurement
• Intelligent agriculture
• Intelligent cities
• Intelligent factory

Technical data:

• Supply voltage: Built-in battery, 2.5v ~ 3.6v
• Operating temperature: -40 ~ 85°C

E/A interface:

• Battery controllable output (2.6v ~ 3.6v depending on the battery)
• +12v controllable output
• 1 x RS485 interface
• 1 x UART interface, 3.3v or 5v or 12v
• 1 x interrupt or digital IN pins
• 1 x I2C interface
• 1 x one-wire interface

LoRa specification:

• Frequency range, band 1 (HF): 862 ~ 1020 Mhz
• Max. +22 dBm constant RF output vs.
• RX sensitivity: up to -139 dBm.
• Excellent blocking immunity

Battery:

• Non-rechargeable Li/SOCI2 battery
• Capacity: 8500mAh
• Self-discharge: <1% / year @ 25°C
• Max. Continuous current: 130mA
• Max. Charging current: 2A, 1 second

Current consumption

• Sleep mode: 5uA @ 3.3v
• LoRa transmit mode: 125mA @ 20dBm, 82mA @ 14dBm