DDS20 NB-IoT LTE CAT-M Waterproof Ultrasonic liquid level sensor
The Dragino DDS20-NB or DDS20-CB is an NB-IoT or LTE CAT-M Ultrasonic liquid level sensor for the Internet of Things solution. It uses a none-contact method to measure the height of liquid in a container without opening the container and send the IoT platform via the NB-IoT or LTE CAT-M network.
The DDS20 sensor is installed directly below the container to detect the height of the liquid level. The user doesn't need to open a hole in the container to be tested. The non-contact measurement makes the measurement safe, easier, and possible for some strict situations.
DDS20 uses ultrasonic sensing technology for distance measurement. DDS20 is of high accuracy to measure various liquids such as toxic substances, strong acids, strong alkalis, and various pure liquids in high-temperature and high-pressure airtight containers.
DDS20 supports different uplink methods including MQTT, MQTTs, UDP & TCP for different application requirements, and support uplinks to various IoT Servers.
DDS20 supports BLE configure and OTA update which make users easy to use.
DDS20 is powered by an 8500mAh Li-SOCI2 battery, it is designed for long-term use for up to several years.
Features:
- NB-IoT or LTE CAT-M 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 the 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
Applications:
- Smart liquid control solution
- Smart liquefied gas solution
Specifications:
Common DC Characteristics:
- Supply Voltage: 2.5v ~ 3.6v
- Operating Temperature: -40 ~ 85°C
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
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