Summary

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21		-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.
	21	+The Dragino LDDS75 is a (% style="color:#4472c4" %)** 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 (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** 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.
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24		-It detects the distance** between the measured object and the sensor**, and uploads the value via wireless to LoRaWAN IoT Server.
	24	+It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
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27	27	The LoRa wireless technology used in LDDS75 allows 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.
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30		-LDDS75 is powered by **4000mA or 8500mAh Li-SOCI2 battery**; It is designed for long term use up to 10 years*.
	30	+LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
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33	33	Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
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36		-*Actually lifetime depends on network coverage and uplink interval and other factors
	36	+(% style="color:#4472c4" %) ***** (%%)Actually lifetime depends on network coverage and uplink interval and other factors
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	41	+[[image:1654847051249-359.png]]
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45	45	== ​1.2  Features ==
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47	47	* LoRaWAN 1.0.3 Class A
48		-* Ultra-low power consumption
49		-* Laser technology for distance detection
50		-* Operating Range - 0.1m~~12m①
51		-* Accuracy - ±5cm@(0.1-6m), ±1%@(6m-12m)
52		-* Monitor Battery Level
	48	+* Ultra low power consumption
	49	+* Distance Detection by Ultrasonic technology
	50	+* Flat object range 280mm - 7500mm
	51	+* Accuracy: ±(1cm+S*0.3%) (S: Distance)
	52	+* Cable Length : 25cm
53	53	* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
54	54	* AT Commands to change parameters
55	55	* Uplink on periodically
56	56	* Downlink to change configure
57		-* 8500mAh Battery for long term use
	57	+* IP66 Waterproof Enclosure
	58	+* 4000mAh or 8500mAh Battery for long term use
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	60	+
59	59	== 1.3  Probe Specification ==
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61	61	* Storage temperature ：-20℃~~75℃
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797	797	* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
798	798	* Blink once when device transmit a packet.
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801	801	== 2.8  ​Firmware Change Log ==
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1274	1274	* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
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1278	1278	= 10. ​ Packing Info =
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1290	1290	* Weight / pcs : g
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1294	1294	= 11.  ​Support =
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1296	1296	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.

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