DDS20-NB -- NB-IoT Ultrasonic liquid level sensor

The Dragino DDS20-NB is a NB-IoT Ultrasonic liquid level sensor for Internet of Things solution. It uses none-contact method to measure the height of liquid in a container without opening the container, and send IoT platform via NB-IoT network.

The DDS20-NB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The none-contact measurement makes the measurement safety, easier and possible for some strict situation.  

DDS20-NB uses ultrasonic sensing technology for distance measurement. DDS20-NB is of high accuracy to measure various liquid such as: toxic substances, strong acids, strong alkalis and various pure liquids in high-temperature and high-pressure airtight containers.

DDS20-NB supports different uplink methods including MQTT, MQTTs, UDP & TCP for different application requirement, and support uplinks to various IoT Servers.

DDS20-NB supports BLE configure and OTA update which make user easy to use.

DDS20-NB is powered by 8500mAh Li-SOCI2 battery, it is designed for long-term use up to several years.

DDS20-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
• Liquid Level Measurement by Ultrasonic technology
• Measure through container, No need to contact Liquid
• Valid level range 20mm - 2000mm
• Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
• Multiply Sampling and one uplink
• Support Bluetooth v5.1 remote configure and update firmware
• Uplink on periodically
• Downlink to change configure
• IP66 Waterproof Enclosure
• 8500mAh Battery for long term use
• Nano SIM card slot for NB-IoT SIM

Applications: 

• Smart liquid control solution
• Smart liquefied gas solution

Specifications:

Common DC Characteristics:

• Supply Voltage: 2.5v ~ 3.6v
• Operating Temperature: -40 ~ 85°C

LoRa 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

Package Includes: 

• DDS20-NB NB-IoT Ultrasonic liquid level sensor x 1 

• External antenna x 1 

Note:

Ultrasonic coupling paste and Eproxy AB glue are subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.

Dimensions and Weight:

• Device Size: 14.5 x 8 x 5 cm
• Device Weight: 190 g

Order Info:

Part Number: DDS20-NB-XX

XX: 

• GE: General version ( Exclude SIM card) 
• 1D: with 1NCE* 10 years 500MB SIM card and Pre-configure to DataCake server  

1NCE SIM Card NB-IoT network coverage: Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, US Virgin Islands 

###**Shipping Notice**
- We only support express shipping because of included battery
- Prices are exclusive of local taxes and import duties

• Availability: 19 In Stock
• Model: DDS20-NB