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25	25	The Dragino NDDS75 is a (% style="color:blue" %)**NB-IoT Distance Detection Sensor**(%%) for Internet of Things solution. It is designed 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.
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28	28	The NDDS75 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 IoT Server via NB-IoT Network.
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31	31	NarrowBand-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage.
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34	34	NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
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37	37	NDDS75 is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to 5 years. (Actually Battery life depends on the use environment, update period & uplink method)
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40	40	To use NDDS75, user needs to check if there is NB-IoT coverage in local area and with the bands NDDS75 supports. If the local operate support it, user needs to get a NB-IoT SIM card from local operator and install NDDS75 to get NB-IoT network connection.
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50	50	== 1.2 ​ Features ==
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52		-
53	53	* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
54	54	* Ultra low power consumption
55	55	* Distance Detection by Ultrasonic technology
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63	63	* Micro SIM card slot for NB-IoT SIM
64	64	* 8500mAh Battery for long term use
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66		-
67	67	== 1.3  Specification ==
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94	94	* STOP Mode: 10uA @ 3.3v
95	95	* Max transmit power: 350mA@3.3v
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97		-
98	98	== ​1.4  Applications ==
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100	100	* Smart Buildings & Home Automation
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151	151	* Your local operator has already distributed a NB-IoT Network there.
152		-* The local NB-IoT network used the band that NSE01 supports.
	156	+* The local NB-IoT network used the band that NDDS75 supports.
153	153	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
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320	320	In this mode, uplink payload includes in total 14 bytes
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323		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	327	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
324	324	|=(% style="width: 60px;" %)(((
325	325	**Size(bytes)**
326		-)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 80px;" %)**2**|=(% style="width: 60px;" %)**1**
	330	+)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
327	327	|(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:120px" %)[[Distance (unit: mm)>>||anchor="H2.4.5A0Distance"]]|(% style="width:80px" %)[[Interrupt>>||anchor="H2.4.6A0DigitalInterrupt"]]
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453	453	Get the distance. Flat object range 280mm - 7500mm.
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455	455	For example, if the data you get from the register is **__0x0B 0x05__**, the distance between the sensor and the measured object is
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595	595	== 2.7  ​Firmware Change Log ==
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598	598	Download URL & Firmware Change log
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601	601	[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/]]
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605	605	Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
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841	841	(% style="color:#037691" %)**Package Includes**:
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843		-* NSE01 NB-IoT Distance Detect Sensor Node x 1
	853	+* NDDS75 NB-IoT Distance Detect Sensor Node x 1
844	844	* External antenna x 1
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850	850	(% style="color:#037691" %)**Dimension and weight**:
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852		-
853	853	* Device Size: 13.0 x 5 x 4.5 cm
854	854	* Device Weight: 150g
855	855	* Package Size / pcs : 15 x 12x 5.5 cm