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24	24	(((
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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.
26		-\\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.
27		-\\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.
28		-\\NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
29		-\\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)
30		-\\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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	30	+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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	34	+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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	38	+NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
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	42	+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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	46	+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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39	39
40	40	== 1.2 ​ Features ==
41	41
42		-
43	43	* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
44	44	* Ultra low power consumption
45	45	* Distance Detection by Ultrasonic technology
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57	57
58	58	== 1.3  Specification ==
59	59
60		-
61	61	(% style="color:#037691" %)**Common DC Characteristics:**
62	62
63	63	* Supply Voltage: 2.1v ~~ 3.6v
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83	83	(% style="color:#037691" %)**Power Consumption**
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85	85	* STOP Mode: 10uA @ 3.3v
86		-* Max transmit power: 350mA@3.3v
	101	+* Max transmit power: [[350mA@3.3v>>mailto:350mA@3.3v]]
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143	143	* Your local operator has already distributed a NB-IoT Network there.
144		-* The local NB-IoT network used the band that NSE01 supports.
	159	+* The local NB-IoT network used the band that NDDS75 supports.
145	145	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
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261	261	* (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
262	262	* (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/Set MQTT server address and port
263	263	* (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/Set up the CLIENT of MQTT
264		-* (% style="color:blue" %)**AT+UNAME=UNAME  **(%%)~/~/Set the username of MQTT
265		-* (% style="color:blue" %)**AT+PWD=PWD  **(%%)~/~/Set the password of MQTT
	279	+* (% style="color:blue" %)**AT+UNAME=UNAME                                **(%%)~/~/Set the username of MQTT
	280	+* (% style="color:blue" %)**AT+PWD=PWD                                         **(%%)~/~/Set the password of MQTT
266	266	* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
267	267	* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
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312	312	In this mode, uplink payload includes in total 14 bytes
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315		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	330	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
316	316	|=(% style="width: 60px;" %)(((
317	317	**Size(bytes)**
318		-)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 80px;" %)**2**|=(% style="width: 60px;" %)**1**
	333	+)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
319	319	|(% 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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445	445	Get the distance. Flat object range 280mm - 7500mm.
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447	447	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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587	587	== 2.7  ​Firmware Change Log ==
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590	590	Download URL & Firmware Change log
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593	593	[[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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597	597	Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
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833	833	(% style="color:#037691" %)**Package Includes**:
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835		-* NSE01 NB-IoT Distance Detect Sensor Node x 1
	856	+* NDDS75 NB-IoT Distance Detect Sensor Node x 1
836	836	* External antenna x 1
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842	842	(% style="color:#037691" %)**Dimension and weight**:
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844		-
845	845	* Device Size: 13.0 x 5 x 4.5 cm
846	846	* Device Weight: 150g
847	847	* Package Size / pcs : 15 x 12x 5.5 cm