The Dragino LDDS75 is a LoRaWAN Distance Detection Sensor for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses ultrasonic sensing technology for distance measurement, and temperature compensation is performed internally to improve the reliability of data.

The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.

It detects the distance between the measured object and the sensor, and uploads the value via wireless to LoRaWAN IoT Server.

LDDS75 is powered by 4000mAh / 8500mAh Li-SOCI2 battery, It is designed for long term use up to 10 years. (Actually Battery life depends on the use environment, update period.)

Each LDDS75 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to local LoRaWAN server and it will auto connect after power on.

Default FW in AS923, but it support US915, AU915 and all 900MHz Frequency by loading different FW, it could also support 868MHz if loading 868MHz FW, but there will be slight 0.5-1dB loss here.

Feature:

LoRaWAN v1.0.4 Class A
Ultra low power consumption
Distance Detection by Ultrasonic technology
Flat object range 280mm - 7500mm
Temperature Compensation for measurements
Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
AT Commands to change parameters
Uplink on periodically
Downlink to change configure
IP66 Waterproof Enclosure
Cable Length : 25cm
Accuracy: ±(1cm+S*0.3%) (S: Distance)

Applications:

Horizontal distance measurement
Liquid level measurement
Parking management system
Object proximity and presence detection
Intelligent trash can management system
Robot obstacle avoidance
Automatic control
Sewer
Bottom water level monitoring

Specifications:

Environment

Operating Temperature

-15 ~ +60℃

Storage Temperature

-25 ~ +85℃

Protection Level

IP66

LoRaWAN frequency and Countries/Regions

Frequency	Status	Countries/Regions
EU868	OK	Europe and other
AU915, AS923	OK	Australia
		New Zealand
		Brunei
		Cambodia
		Hongkong
		Indonesia
		Japan
		Laos
		Singapore
		Taiwan
		Thailand
		Vietnam
CN470	OK	China
US915	OK	USA
KR920	OK	Korea

Datasheet: L DDS75.pdf

Operation manual: LDDS75 User manual.pdf

Configure manual: LDDS75 AT commands.pdf

Other documents: LDDS75 Power Analyze.pdf

Decorder: LDDS75 decorder - TTN.txt

LDDS75 - Dragino LoRaWAN Distance Detection Sensor