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17	17
18	18	= 1.  Introduction =
19	19
20		-
21	21	== 1.1 ​ What is N95S31B NB-IoT Sensor Node ==
22	22
23	23	(((
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56	56
57	57	== 1.2 ​ Features ==
58	58
59		-
60	60	* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
61	61	* Monitor Temperature & Humidity via SHT31
62	62	* AT Commands to change parameters
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70	70
71	71
72	72
73		-
74	74	== 1.3  Specification ==
75	75
76	76
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79	79	* Supply Voltage: 2.1v ~~ 3.6v
80	80	* Operating Temperature: -40 ~~ 85°C
81	81
82		-
83		-
84	84	(% style="color:#037691" %)**NB-IoT Spec:**
85	85
86	86	* - B1 @H-FDD: 2100MHz
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90	90	* - B20 @H-FDD: 800MHz
91	91	* - B28 @H-FDD: 700MHz
92	92
93		-
94		-
95	95	(% style="color:#037691" %)**Battery:**
96	96
97	97	* Li/SOCI2 un-chargeable battery
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102	102
103	103
104	104
105		-
106	106	== ​1.4  Applications ==
107	107
108		-
109	109	* Smart Buildings & Home Automation
110	110	* Logistics and Supply Chain Management
111	111	* Smart Metering
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117	117	​
118	118
119	119
120		-
121	121	== 1.5  Pin Definitions & Switch ==
122	122
123		-
124	124	N95S31B use the mother board from NBSN95 which as below.
125	125
126		-
127	127	[[image:image-20220709144723-1.png]]
128	128
129	129
130		-
131	131	=== 1.5.1 Jumper JP2 ===
132	132
133		-
134	134	Power on Device when put this jumper.
135	135
136	136
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137	137
138	138	=== 1.5.2 BOOT MODE / SW1 ===
139	139
140		-
141	141	(((
142	142	1) ISP: upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
143	143	)))
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150	150
151	151	=== 1.5.3 Reset Button ===
152	152
153		-
154	154	Press to reboot the device.
155	155
156	156
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157	157
158	158	=== 1.5.4 LED ===
159	159
160		-
161	161	It will flash:
162	162
163	163	1. When boot the device in flash mode
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165	165
166	166
167	167
168		-
169	169	= 2.  Use N95S31B to communicate with IoT Server =
170	170
171		-
172	172	== 2.1  How it works ==
173	173
174	174
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201	201	[[image:image-20220709150546-2.png]]
202	202
203	203
204		-
205	205	=== 2.2.1 Test Requirement ===
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207	207
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254	254
255	255	=== 2.2.3  Insert SIM card ===
256	256
257		-
258	258	(((
259	259	Insert the NB-IoT Card get from your provider.
260	260	)))
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270	270
271	271	=== 2.2.4  Connect USB – TTL to N95S31B to configure it ===
272	272
273		-
274	274	(((
275	275	(((
276	276	User need to configure N95S31B via serial port to set the (% style="color:blue" %)**Server Address** / **Uplink Topic** (%%)to define where and how-to uplink packets. N95S31B support AT Commands, user can use a USB to TTL adapter to connect to N95S31B and use AT Commands to configure it, as below.
277		-
278		-
279	279	)))
280	280	)))
281	281
282	282	[[image:1657351312545-300.png]]
283	283
284		-
285	285	**Connection:**
286	286
287	287	(% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
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305	305
306	306	[[image:1657329814315-101.png]]
307	307
308		-
309	309	(((
310		-(% style="color:red" %)**Note: the valid AT Commands can be found at:  **(%%)**[[https:~~/~~/www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i~~-~~-AyZcQkoua?dl=0>>https://www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i--AyZcQkoua?dl=0]]**
	284	+(% style="color:red" %)Note: the valid AT Commands can be found at:  (%%)[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/]]
311	311	)))
312	312
313	313
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314	314
315	315	=== 2.2.5  Use CoAP protocol to uplink data ===
316	316
	291	+(% style="color:red" %)Note: if you don't have CoAP server, you can refer this link to set up one: (%%)[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
317	317
318		-(% style="color:red" %)**Note: if you don't have CoAP server, you can refer this link to set up one: **(%%)**[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]**
319	319
320		-
321	321	(((
322	322	**Use below commands:**
323	323	)))