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20	20	== 1.1 ​ What is N95S31B NB-IoT Sensor Node ==
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26	26	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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46	46	~* make sure you have NB-IoT coverage locally.
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52	52	[[image:1657348284168-431.png]]
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55		-
56	56	== 1.2 ​ Features ==
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180		-
181	181	== 2.2 ​ Configure the N95S31B ==
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183	183	=== 2.2.1  Power On N95S31B ===
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365	365	To save battery life, N95S31B will establish a subscription before each uplink and close the subscription 3 seconds after uplink successful. Any downlink commands from server will only arrive during the subscription period.
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370	370	MQTT protocol has a much high-power consumption compare vs UDP / CoAP protocol. Please check the power analyze document and adjust the uplink period to a suitable interval.
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421		- (% style="color:blue" %)**AT+CFGMOD=2 ** (%%)~/~/will set the N95S31B to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
	410	+ (% style="color:blue" %)**AT+CFGMOD=2 ** (%%)~/~/  will set the N95S31B to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
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629		-Higher byte: Specify hardware version: always 0x00 for N95S31B
	618	+**Higher byte:** Specify hardware version: always 0x00 for N95S31B
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633		-Lower byte: Specify the software version: 0x6E=110, means firmware version 110
	622	+**Lower byte:** Specify the software version: 0x6E=110, means firmware version 110
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	943	+firmware：[[https:~~/~~/www.dropbox.com/sh/fr8w23rb951512i/AACSJeGQg-7ZjKhAI_Sn57H6a?dl=0>>https://www.dropbox.com/sh/fr8w23rb951512i/AACSJeGQg-7ZjKhAI_Sn57H6a?dl=0]]
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957	957	(% style="color:red" %)**Notice, N95S31B and LSN50v2 share the same mother board. They use the same connection and method to update.**
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962	962	= 6.  Trouble Shooting =
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968	968	**Please see: **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting]]
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976	976	== 6.2  AT Command input doesn't work ==
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	968	+== 6.3 Not able to connect to NB-IoT network and keep showing "Signal Strength:99". ==
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	971	+This means sensor is trying to join the NB-IoT network but fail. Please see this link for **//[[trouble shooting for signal strenght:99>>doc:Main.CSQ\:99,99.WebHome]]//**.
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985	985	= 7. ​ Order Info =
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1010	1010	* Weight / pcs : 180g
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1019	1019	= 9.  Support =
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1022	1022	* 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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1023	1023	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]]
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