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1		-NDDS75 NB-IoT Distance Detect Sensor User Manual
	1	+N95S31B NB-IoT Temperature & Humidity Sensor User Manual

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1	1	(% style="text-align:center" %)
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8		-**Table of Contents:**
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10		-{{toc/}}
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	10	+**Table of Contents:**
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	16	+
17	17	= 1.  Introduction =
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19		-== 1.1 ​ What is NDDS75 Distance Detection Sensor ==
	19	+== 1.1 ​ What is N95S31B NB-IoT Sensor Node ==
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21	21	(((
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26		-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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	24	+The Dragino N95S31B is a (% style="color:blue" %)**NB-IoT Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the (% style="color:blue" %)**surrounding environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via NB-IoT network*.
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	26	+The temperature & humidity sensor used in N95S31B is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a (% style="color:blue" %)**waterproof anti-condensation casing **(%%)for long term use.
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31		-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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	28	+N95S31B supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP**(%%) for different application requirement.
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	30	+N95S31B is powered by(% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to several years. (Real-world battery life depends on the use environment, update period. Please check related Power Analyze report).
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36		-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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	33	+~* make sure you have NB-IoT coverage locally.
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41		-NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
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46		-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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50		-
51		-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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58		-[[image:1657327959271-447.png]]
	38	+[[image:1657348284168-431.png]]
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61	61
62	62	== 1.2 ​ Features ==
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64		-
65	65	* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
66	66	* Ultra low power consumption
67	67	* Distance Detection by Ultrasonic technology
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75	75	* Micro SIM card slot for NB-IoT SIM
76	76	* 8500mAh Battery for long term use
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78		-
79	79	== 1.3  Specification ==
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106	106	* STOP Mode: 10uA @ 3.3v
107	107	* Max transmit power: 350mA@3.3v
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109		-
110	110	== ​1.4  Applications ==
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112	112	* Smart Buildings & Home Automation
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332	332	In this mode, uplink payload includes in total 14 bytes
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	312	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
336	336	|=(% style="width: 60px;" %)(((
337	337	**Size(bytes)**
338	338	)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
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465	465	Get the distance. Flat object range 280mm - 7500mm.
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	444	+(((
467	467	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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607	607	== 2.7  ​Firmware Change Log ==
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610	610	Download URL & Firmware Change log
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613	613	[[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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614	614	)))
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	598	+(((
617	617	Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
	600	+)))
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