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Last modified by Mengting Qiu on 2025/07/03 14:48
From version 174.2
edited by Xiaoling
on 2022/06/21 09:50
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To version 158.1
edited by Bei Jinggeng
on 2022/06/20 16:02
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Summary

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Title
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1 -LHT52 - LoRaWAN Temperature & Humidity Sensor User Manual
1 +LHT65N LoRaWAN Temperature & Humidity Sensor Manual
Parent
... ... @@ -1,1 +1,1 @@
1 -Main.User Manual for LoRaWAN End Nodes.WebHome
1 +Main.WebHome
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
... ... @@ -1,23 +1,23 @@
1 1  (% style="text-align:center" %)
2 -[[image:1655774244188-589.png]]
2 +[[image:image-20220613162008-1.png||_mstalt="428142" height="579" width="379"]]
3 3  
4 4  
5 5  
6 6  
7 +
7 7  (% _mstvisible="1" %)
8 8  (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
9 9  
11 +{{toc/}}
10 10  
11 11  
12 12  
13 13  
14 -
15 -
16 16  (% _mstvisible="1" %)
17 -= (% _msthash="277498" _msttexthash="253045" _mstvisible="3" %)1.  Introduction(%%) =
17 += (% _msthash="277498" _msttexthash="253045" _mstvisible="3" %)1. Introduction(%%) =
18 18  
19 19  (% _mstvisible="1" %)
20 -== (% _msthash="1532895" _msttexthash="1426958" _mstvisible="3" %)1.1  What is LHT52 Temperature & Humidity Sensor(%%) ==
20 +== (% _msthash="1532895" _msttexthash="1426958" _mstvisible="3" %)1.1 What is LHT65N Temperature & Humidity Sensor(%%) ==
21 21  
22 22  (% _mstvisible="1" %)
23 23  (((
... ... @@ -24,50 +24,61 @@
24 24  (% _msthash="506051" _msttexthash="24333127" _mstvisible="2" %)
25 25  
26 26  
27 -The Dragino LHT52 Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:blue" %)**built-in Temperature & Humidity sensor** (%%)and has a USB Type-C sensor connector to connect to external sensors such as external Temperature Sensor.
27 +(% _msthash="506051" _msttexthash="24333127" _mstvisible="2" %)
28 +The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% _mstvisible="4" style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% _mstvisible="4" style="color:#4f81bd" %)**Temperature Sensor**(% _mstvisible="3" %)**.**
29 +)))
28 28  
29 -LHT52 (% style="color:blue" %)**senses environment temperature and humidity**(%%) and send these values via long-range wireless LoRaWAN protocol. It targets professional wireless sensor network applications such as food service, smart metering, smart cities, building automation, and so on.
31 +(% _mstvisible="1" %)
32 +(((
33 +(% _msthash="506052" _msttexthash="66005810" _mstvisible="2" %)
34 +The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
35 +)))
30 30  
31 -LHT52 supports(% style="color:blue" %)** 2 x AAA batteries **(%%)and works for a long time up to several years. Use can replace the batteries easily after they are finished.
37 +(% _mstvisible="1" %)
38 +(((
39 +(% _msthash="506053" _msttexthash="4298047" _mstvisible="2" %)
40 +LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
41 +)))
32 32  
33 -LHT52 is fully compatible with LoRaWAN v1.0.3 protocol, it can work with standard LoRaWAN gateway.
43 +(% _mstvisible="1" %)
44 +(((
45 +(% _msthash="506054" _msttexthash="6016374" _mstvisible="2" %)
46 +LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
47 +)))
34 34  
35 -LHT52 supports(% style="color:blue" %)** Datalog feature** (%%)to make sure users won’t miss sensor data. It records sensor value for every uplink. These values can be retrieved by LoRaWAN server via downlink command.
36 -
37 -LHT52 supports(% style="color:blue" %)** temperature alarm feature**(%%). It can uplink alarm in a short interval while temperature exceeds preset limits.
38 -
39 -*Battery life depends how often to send data, please see [[battery analyzer>>||anchor="H4.2A0PowerConsumptionAnalyze"]].
40 -
41 -(% _msthash="506051" _msttexthash="24333127" _mstvisible="2" %)
42 -[[image:1655774519494-861.png]]
49 +(% _mstvisible="1" %)
50 +(((
51 +(% _msthash="506055" _msttexthash="17023136" _mstvisible="2" %)
52 +LHT65N supports (% _mstvisible="4" style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
43 43  )))
44 44  
45 45  (% _mstvisible="1" %)
46 46  (((
47 47  (% _msthash="506056" _msttexthash="5557097" _mstvisible="2" %)
58 +*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
59 +
60 +(% _msthash="506056" _msttexthash="5557097" _mstvisible="2" %)
48 48  
49 49  )))
50 50  
51 51  (% _mstvisible="1" %)
52 -== (% _msthash="182559" _msttexthash="163319" _mstvisible="3" %)1.2  Features(%%) ==
65 +== (% _msthash="182559" _msttexthash="163319" _mstvisible="3" %)1.2 Features(%%) ==
53 53  
54 54  (% _mstvisible="1" %)
55 -* Wall Attachable.
56 -* LoRaWAN v1.0.3 Class A protocol.
57 -* Built-in Temperature & Humidity sensor
58 -* Optional External Probe
68 +* Wall mountable
69 +* LoRaWAN v1.0.3 Class A protocol
59 59  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
60 60  * AT Commands to change parameters
61 61  * Remote configure parameters via LoRaWAN Downlink
62 -* Firmware upgradable via program port
63 -* Support 2 x AAA LR03 batteries.
73 +* Firmware upgradeable via program port
74 +* Built-in 2400mAh battery for up to 10 years of use.
75 +* Built-in Temperature & Humidity sensor
76 +* Optional External Sensors
77 +* Tri-color LED to indicate working status
64 64  * Datalog feature
65 -* IP Rating: IP52
66 66  
67 -
68 -
69 69  (% _mstvisible="1" %)
70 -== (% _msthash="323570" _msttexthash="297635" _mstvisible="3" %)1.3  Specification(%%) ==
81 +== (% _msthash="323570" _msttexthash="297635" _mstvisible="3" %)1.3 Specification(%%) ==
71 71  
72 72  (% _mstvisible="1" %)
73 73  (((
... ... @@ -78,10 +78,27 @@
78 78  (% _msthash="506057" _msttexthash="671437" _mstvisible="4" %)**Built-in Temperature Sensor:**
79 79  )))
80 80  
81 -* Resolution: 0.01 °C
82 -* Accuracy Tolerance: Typ ±0.3 °C
83 -* Long Term Drift: < 0.02 °C/yr
84 -* Operating Range: -20 ~~ 50 °C
92 +(% _mstvisible="1" %)
93 +* (% _mstvisible="3" %)
94 +(((
95 +(% _msthash="902993" _msttexthash="294424" _mstvisible="4" %)
96 +Resolution: 0.01 °C
97 +)))
98 +* (% _mstvisible="3" %)
99 +(((
100 +(% _msthash="902994" _msttexthash="690664" _mstvisible="4" %)
101 +Accuracy Tolerance : Typ ±0.3 °C
102 +)))
103 +* (% _mstvisible="3" %)
104 +(((
105 +(% _msthash="902995" _msttexthash="504647" _mstvisible="4" %)
106 +Long Term Drift: < 0.02 °C/yr
107 +)))
108 +* (% _mstvisible="3" %)
109 +(((
110 +(% _msthash="902996" _msttexthash="478257" _mstvisible="4" %)
111 +Operating Range: -40 ~~ 85 °C
112 +)))
85 85  
86 86  (% _mstvisible="1" %)
87 87  (((
... ... @@ -90,138 +90,154 @@
90 90  
91 91  (% _mstvisible="2" %)
92 92  (% _msthash="506058" _msttexthash="544453" _mstvisible="4" %)**Built-in Humidity Sensor:**
93 -
94 -
95 -* Resolution: 0.1 %RH
96 -* Accuracy Tolerance: Typ ±3 %RH
97 -* Long Term Drift: < 0.02 °C/yr
98 -* Operating Range: 0 ~~ 99.0 %RH(no Dew)
99 99  )))
100 100  
101 101  (% _mstvisible="1" %)
124 +* (% _mstvisible="3" %)
102 102  (((
103 -(% _mstvisible="2" %)
104 -
126 +(% _msthash="902997" _msttexthash="282438" _mstvisible="4" %)
127 +Resolution: 0.04 %RH
105 105  )))
129 +* (% _mstvisible="3" %)
130 +(((
131 +(% _msthash="902998" _msttexthash="628771" _mstvisible="4" %)
132 +Accuracy Tolerance : Typ ±3 %RH
133 +)))
134 +* (% _mstvisible="3" %)
135 +(((
136 +(% _msthash="902999" _msttexthash="504647" _mstvisible="4" %)
137 +Long Term Drift: < 0.02 °C/yr
138 +)))
139 +* (% _mstvisible="3" %)
140 +(((
141 +(% _msthash="903000" _msttexthash="421291" _mstvisible="4" %)
142 +Operating Range: 0 ~~ 96 %RH
143 +)))
106 106  
107 -(% _mstvisible="3" %)
145 +(% _mstvisible="1" %)
108 108  (((
147 +(% _mstvisible="2" %)
109 109  
110 110  
150 +(% _mstvisible="2" %)
151 +(% _msthash="506059" _msttexthash="680537" _mstvisible="4" %)**External Temperature Sensor:**
152 +)))
111 111  
154 +(% _mstvisible="1" %)
155 +* (% _mstvisible="3" %)
156 +(((
157 +(% _msthash="903001" _msttexthash="332254" _mstvisible="4" %)
158 +Resolution: 0.0625 °C
159 +)))
160 +* (% _mstvisible="3" %)
161 +(((
162 +(% _msthash="903002" _msttexthash="782600" _mstvisible="4" %)
163 +±0.5°C accuracy from -10°C to +85°C
164 +)))
165 +* (% _mstvisible="3" %)
166 +(((
167 +(% _msthash="903003" _msttexthash="729482" _mstvisible="4" %)
168 +±2°C accuracy from -55°C to +125°C
169 +)))
170 +* (% _mstvisible="3" %)
171 +(((
112 112  (% _msthash="903004" _msttexthash="592540" _mstvisible="4" %)
113 -== 1.4  Power Consumption ==
173 +Operating Range: -55 °C ~~ 125 °C
114 114  
115 -LHT52 (without external sensor): Idle: 5uA, Transmit: max 110mA
116 116  
117 -LHT52 + External Temperature Probe (AS-01): Idle: 6uA, Transmit: max 110mA.
118 -
119 -
120 -
121 -== 1.5  Storage & Operation Temperature ==
122 -
123 --20°C to +50°C
124 -
125 -
126 -
127 -== 1.6  Applications ==
128 -
129 -* Smart Buildings & Home Automation
130 -* Logistics and Supply Chain Management
131 -* Smart Metering
132 -* Smart Agriculture
133 -* Smart Cities
134 -* Smart Factory
135 -
176 +(% _msthash="903004" _msttexthash="592540" _mstvisible="4" %)
136 136  
137 137  )))
138 138  
139 139  (% _mstvisible="1" %)
140 -= (% _msthash="655759" _msttexthash="618618" _mstvisible="3" %)2.  O(%%)peration Mode =
181 += (% _msthash="655759" _msttexthash="618618" _mstvisible="3" %)2. Connect LHT65N to IoT Server(%%) =
141 141  
142 142  (% _mstvisible="1" %)
143 -== (% _msthash="462371" _msttexthash="410332" _mstvisible="3" %)2.1 How it work?(%%) ==
184 +== (% _msthash="462371" _msttexthash="410332" _mstvisible="3" %)2.1 How does LHT65N work?(%%) ==
144 144  
145 145  (% _mstvisible="1" %)
146 146  (((
147 147  (% _msthash="506060" _msttexthash="28254538" _mstvisible="2" %)
148 -Each LHT52 is shipped with a worldwide unique set of LoRaWAN OTAA keys. To use LHT52 in a LoRaWAN network, user needs to input the OTAA keys in LoRaWAN network server. After this, if LHT52 is under this LoRaWAN network coverage, LHT52 can join the LoRaWAN network and start to transmit sensor data. The default period for each uplink is** 20 minutes**.
149 -
150 -(% _msthash="506060" _msttexthash="28254538" _mstvisible="2" %)
151 -
189 +LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
152 152  )))
153 153  
154 154  (% _mstvisible="1" %)
155 155  (((
156 156  (% _msthash="506061" _msttexthash="48200724" _mstvisible="2" %)
195 +If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
196 +
197 +(% _msthash="506061" _msttexthash="48200724" _mstvisible="2" %)
157 157  
158 158  )))
159 159  
160 160  (% _mstvisible="1" %)
161 -== (% _msthash="514384" _msttexthash="458666" _mstvisible="3" %)2.2 How to Activate LHT52?(%%) ==
202 +== (% _msthash="514384" _msttexthash="458666" _mstvisible="3" %)2.2 How to Activate LHT65N?(%%) ==
162 162  
163 -(% style="color:red" %)** 1.  Open enclosure from below position.**
204 +(% _msthash="315239" _msttexthash="748241" _mstvisible="1" %)
205 +The LHT65N has two working modes:
164 164  
165 -[[image:image-20220621093835-1.png]]
207 +(% _mstvisible="1" %)
208 +* (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
209 +* (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
166 166  
211 +(% _mstvisible="1" %)
212 +(((
213 +(% _msthash="506062" _msttexthash="6036823" _mstvisible="2" %)
214 +The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
215 +)))
167 167  
168 -(% style="color:red" %)** 2.  Insert 2 x AAA LR03 batteries.**
217 +(% _mstvisible="1" %)
218 +[[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
169 169  
170 -[[image:image-20220621093835-2.png]]
220 +(% _mstvisible="1" %)
221 +[[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
171 171  
172 172  
173 -(% style="color:red" %)** 3.  Press the reset button to activate device.**
174 -
175 -[[image:image-20220621093835-3.png]]
176 -
177 -
178 -User can check [[LED Status>>||anchor="H2.8A0LEDIndicator"]] to know the working state of LHT52.
179 -
180 -
181 -
182 182  (% _mstvisible="1" %)
183 183  == (% _msthash="882726" _msttexthash="838526" _mstvisible="3" %)2.3 Example to join LoRaWAN network(%%) ==
184 184  
185 -This section shows an example for how to join the [[TheThingsNetwork>>url:https://www.thethingsnetwork.org/]] LoRaWAN IoT server. Usages with other LoRaWAN IoT servers are of similar procedure.
227 +(% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
228 +This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
186 186  
187 187  (% _mstvisible="1" class="wikigeneratedid" %)
188 -[[image:1655775912928-657.png]]
231 +[[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
189 189  
190 -Assume the DLOS8 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. We need to add the LHT52 device in TTN V3 portal.
233 +(% _msthash="315241" _msttexthash="10802155" _mstvisible="1" %)
234 +Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
191 191  
192 192  
193 -**Step 1**:  Create a device in TTN V3 with the OTAA keys from LHT52.
237 +(% _mstvisible="1" %)
238 +=== (% _msthash="670592" _msttexthash="634075" _mstvisible="3" %)2.3.1 Step 1: Create Device n TTN(%%) ===
194 194  
195 -Each LHT52 is shipped with a sticker with the default DEV EUI as below:
240 +(% _msthash="315242" _msttexthash="1601782" _mstvisible="1" %)
241 +Create a device in TTN V3 with the OTAA keys from LHT65N.
196 196  
243 +(% _msthash="315243" _msttexthash="3694444" _mstvisible="1" %)
244 +Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
197 197  
246 +(% _mstvisible="1" %)
198 198  [[image:image-20220617150003-1.jpeg]]
199 199  
249 +(% _msthash="315244" _msttexthash="3659149" _mstvisible="1" %)
250 +User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
200 200  
201 -Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
202 -
252 +(% _msthash="315245" _msttexthash="642889" _mstvisible="1" %)
203 203  Add APP EUI in the application.
204 204  
205 -choose to create the device manually.
206 -
207 -Add APP KEY and DEV EUI
208 -
209 -
210 -(% _msthash="315245" _msttexthash="642889" _mstvisible="1" %)
255 +(% _mstvisible="1" %)
211 211  [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
212 212  
213 -(% _msthash="315245" _msttexthash="642889" _mstvisible="1" %)
214 -[[image:1655776122894-257.png]]
258 +(% _mstvisible="1" %)
259 +[[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
215 215  
261 +(% _mstvisible="1" %)
262 +[[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
216 216  
217 -**Default mode OTAA**
218 -
219 -
220 -
221 -
222 222  (% _msthash="315246" _msttexthash="878800" _mstvisible="1" %)
223 -[[image:1655776241177-240.png]]
265 +Note: LHT65N use same payload as LHT65.
224 224  
267 +(% _mstvisible="1" %)
268 +[[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
225 225  
226 226  
227 227  (% _msthash="315247" _msttexthash="595543" _mstvisible="1" %)
... ... @@ -547,18 +547,12 @@
547 547  * Sync time OK: 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
548 548  * Unix Time Request:1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
549 549  
594 +
550 550  ==== (% _msthash="1389752" _msttexthash="1234766" _mstvisible="3" %)2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable)(%%) ====
551 551  
552 -In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
553 553  
554 -be used to power the external ADC sensor; user can control the power on time for this
555 555  
556 -sensor by setting:
557 557  
558 -AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
559 -
560 -
561 -
562 562  (% _mstvisible="1" %)
563 563  == (% _msthash="487097" _msttexthash="454818" _mstvisible="3" %)2.5 Show data on Datacake(%%) ==
564 564  
... ... @@ -1885,7 +1885,7 @@
1885 1885  (% _msthash="506131" _msttexthash="14585714" %)
1886 1886  AT commands：
1887 1887  
1888 -[[image:image-20220620153708-1.png||height="603" width="723"]]
1926 +[[image:image-20220615092034-1.png||_mstalt="428870"]]
1889 1889  
1890 1890  (% _msthash="506132" _msttexthash="337922" %)
1891 1891  Downlink commands:
... ... @@ -1894,13 +1894,13 @@
1894 1894  (% _msthash="506133" _msttexthash="33046" %)
1895 1895  **TTN:**
1896 1896  
1897 -[[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1935 +[[image:image-20220615092124-2.png||_mstalt="429221" height="843" width="893"]]
1898 1898  
1899 1899  
1900 1900  (% _msthash="506134" _msttexthash="11113791" %)
1901 1901  **Helium：**
1902 1902  
1903 -[[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1941 +[[image:image-20220615092551-3.png||_mstalt="430794" height="556" width="1097"]]
1904 1904  
1905 1905  
1906 1906  (% _msthash="506135" _msttexthash="4159844" %)
... ... @@ -1908,13 +1908,13 @@
1908 1908  
1909 1909  [[image:image-20220615094850-6.png||_mstalt="433082"]]
1910 1910  
1911 -[[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1949 +[[image:image-20220615094904-7.png||_mstalt="433485" height="329" width="1067"]]
1912 1912  
1913 1913  
1914 1914  (% _msthash="506136" _msttexthash="39286" %)
1915 1915  **Aws:**
1916 1916  
1917 -[[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1955 +[[image:image-20220615092939-4.png||_mstalt="434460" height="532" width="1062"]]
1918 1918  
1919 1919  
1920 1920  == (% _msthash="1220570" _msttexthash="33199257" %)6.3 How to change the uplink interval？(%%) ==
... ... @@ -1927,8 +1927,6 @@
1927 1927  
1928 1928  [[image:image-20220615153355-1.png]]
1929 1929  
1930 -[[image:image-20220620154900-5.jpeg||height="427" width="570"]]
1931 -
1932 1932  (% style="background-color:yellow" %)**1 < - -> GND  < - ->  Black**
1933 1933  
1934 1934  (% style="background-color:yellow" %)**5 < - ->  RXD  < - ->  White**
... ... @@ -1935,10 +1935,9 @@
1935 1935  
1936 1936  (% style="background-color:yellow" %)**9 < - ->  TXD  < - ->  Green**
1937 1937  
1974 +[[image:image-20220615153914-2.jpeg||height="608" width="456"]]
1938 1938  
1939 -To switch from download mode to command mode, press reset key
1940 1940  
1941 -
1942 1942  (((
1943 1943  (% _msthash="736728" _msttexthash="67213055" %)
1944 1944  (((
... ... @@ -1950,7 +1950,7 @@
1950 1950  (% _msthash="736729" _msttexthash="1907009" %)
1951 1951  Input password and ATZ to activate LHT65N,As shown below:
1952 1952  
1953 -[[image:image-20220615154519-3.png||height="672" width="807"]]
1988 +[[image:image-20220615154519-3.png]]
1954 1954  
1955 1955  
1956 1956  )))
... ... @@ -1957,11 +1957,8 @@
1957 1957  
1958 1958  == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1959 1959  
1960 -
1961 1961  [[image:image-20220615153355-1.png]]
1962 1962  
1963 -(% style="background-color:yellow" %)**1 < - -> GND  < - ->  Black**
1964 -
1965 1965  (% style="background-color:yellow" %)**4  < - ->  3.3V  < - ->  Blue**
1966 1966  
1967 1967  (% style="background-color:yellow" %)**5 < - ->  RXD  < - ->  White**
... ... @@ -1968,13 +1968,9 @@
1968 1968  
1969 1969  (% style="background-color:yellow" %)**9 < - ->  TXD  < - ->  Green**
1970 1970  
1971 -[[image:image-20220620160241-6.jpeg||height="428" width="571"]]
2003 +Use after connection， ground wire（1 < - -> GND  < - ->  Black） for 1s and then pull it out.Then restart the device.
1972 1972  
1973 -Press reset after connecting the 4boot cable to enter the download mode.
1974 1974  
1975 -[[image:image-20220620160516-7.png||height="435" width="435"]]
1976 -
1977 -
1978 1978  (% _mstmutation="1" %)**Step1**(%%): Install TremoProgrammer  first.
1979 1979  
1980 1980  [[image:image-20220615170542-5.png]]
... ... @@ -1992,7 +1992,7 @@
1992 1992  
1993 1993  (% _istranslated="1" _mstmutation="1" %)**Step4：**(%%)Click Start
1994 1994  
1995 -[[image:image-20220620160723-8.png]]
2023 +
1996 1996  )))
1997 1997  
1998 1998  (% _mstvisible="1" %)
... ... @@ -2118,6 +2118,7 @@
2118 2118  
2119 2119  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/home/Products_Public_Document/LoRaWAN%20End%20Node/LHT65N%20Temperature%20%26%20Humidity%20Sensor||_msthash="504975" _msttexthash="51420512"]]
2120 2120  
2149 +
2121 2121  = (% _msthash="216320" _msttexthash="10002096" %)10. (%%)FCC Warning =
2122 2122  
2123 2123  (% _mstvisible="1" %)
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