Last modified by Mengting Qiu on 2024/04/30 14:27
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From version < 52.1 >
edited by Edwin Chen
on 2022/05/23 00:35
To version < 55.2 >
edited by Xiaoling
on 2022/05/23 11:28
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1 -XWiki.Edwin
1 +XWiki.Xiaoling
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1 +(% style="text-align:center" %)
2 +[[image:image-20220523111447-1.jpeg||height="448" width="448"]]
3 +
1 1  {{box cssClass="floatinginfobox" title="**Contents**"}}
2 2  {{toc/}}
3 3  {{/box}}
4 4  
5 -= Overview =
8 +{{toc/}}
6 6  
7 -[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]]
10 += 1.Introduction =
8 8  
12 +== 1.1 What is LHT65N Temperature & Humidity Sensor ==
9 9  
14 +
10 10  The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a(% class="mark" %) **built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% class="mark" %)**Temperature Sensor**(%%)**.**
11 11  
12 12  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.
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19 19  
20 20  *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
21 21  
27 +== 1.2 Features ==
22 22  
23 -== Features: ==
24 -
25 25  * Wall mountable
26 26  * LoRaWAN v1.0.3 Class A protocol
27 27  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
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34 34  * Tri-color LED to indicate working status
35 35  * Datalog feature
36 36  
37 -== Specification: ==
41 +== 1.3 Specification ==
38 38  
39 39  **Built-in Temperature Sensor:**
40 40  
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57 57  * ±2°C accuracy from -55°C to +125°C
58 58  * Operating Range: -55 °C ~~ 125 °C
59 59  
60 -= Connect LHT65N to IoT Server =
64 += 2. Connect LHT65N to IoT Server =
61 61  
62 -== How does LHT65N work? ==
66 +== 2.1 How does LHT65N work? ==
63 63  
64 64  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.
65 65  
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66 66  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.
67 67  
68 68  
69 -== How to Activate LHT65N? ==
73 +== 2.2 How to Activate LHT65N? ==
70 70  
71 71  The LHT65N has two working modes:
72 72  
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77 77  
78 78  [[image:image-20220515123819-1.png||height="379" width="317"]]
79 79  
84 +(% border="1" %)
80 80  |**Behavior on ACT**|**Function**|**Action**
81 81  |**Pressing ACT between 1s < time < 3s**|Test uplink status|If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
82 82  |**Pressing ACT for more than 3s**|Active Device|green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
83 83  |**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
84 84  
85 -== Example to join LoRaWAN network ==
90 +== 2.3 Example to join LoRaWAN network ==
86 86  
87 87  (% class="wikigeneratedid" %)
88 88  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.
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93 93  Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
94 94  
95 95  
96 -=== **Step 1**: Create Device n TTN ===
101 +=== **2.3.1 Step 1**: Create Device n TTN ===
97 97  
98 98  Create a device in TTN V3 with the OTAA keys from LHT65N.
99 99  
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123 123  [[image:image-20220522233118-7.png]]
124 124  
125 125  
126 -=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
131 +=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
127 127  
128 128  Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
129 129  
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260 260  [[Time Stamp>>path:#Unix_Time_Stamp]]
261 261  )))
262 262  
263 -* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
268 +* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
264 264  
265 265  (% style="width:587px" %)
266 266  |Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
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587 587  Set transmit interval to 60000ms = 60 seconds
588 588  )))
589 589  
590 -
591 591  **Downlink Command: 0x01**
592 592  
593 593  Format: Command Code (0x01) followed by 3 bytes time value.
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597 597  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
598 598  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
599 599  
600 -
601 601  == Set External Sensor Mode ==
602 602  
603 603  Feature: Change External Sensor Mode.
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615 615  |AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1
616 616  |AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp
617 617  
618 -
619 619  **Downlink Command: 0xA2**
620 620  
621 621  Total bytes: 2 ~~ 5 bytes
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626 626  * 0xA209: Same as AT+EXT=9
627 627  * 0xA20702003c,Same as AT+SETCNT=60
628 628  
629 -
630 630  == Enable/Disable uplink Temperature probe ID ==
631 631  
632 632  Feature: If PID is enabled, device will send the temperature probe ID on:
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642 642  |**Command Example**|**Function**|**Response**
643 643  |AT+PID=1|Enable PID uplink|OK
644 644  
645 -
646 646  **Downlink Command:**
647 647  
648 648  * 0xA800     à AT+PID=0
649 649  * 0xA801     à AT+PID=1
650 650  
651 -
652 -
653 653  == Set Password ==
654 654  
655 655  Feature: Set device password, max 9 digits
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665 665  )))
666 666  |AT+PWORD=999999|Set password|OK
667 667  
668 -
669 669  **Downlink Command:**
670 670  
671 671  No downlink command for this feature.
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680 680  |**Command Example**|**Function**|**Response**
681 681  |AT+DISAT|Quit AT Commands mode|OK
682 682  
683 -
684 684  **Downlink Command:**
685 685  
686 686  No downlink command for this feature.
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700 700  OK
701 701  )))
702 702  
703 -
704 704  **Downlink Command:**
705 705  
706 706  * There is no downlink command to set to Sleep mode.
707 707  
708 -
709 -
710 710  == Set system time ==
711 711  
712 712  Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
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720 720  Set System time to 2021-01-20 00:59:12
721 721  )))
722 722  
723 -
724 724  **Downlink Command:**
725 725  
726 726  0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
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739 739  |**Command Example**|**Function**
740 740  |AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
741 741  
742 -
743 743  **Downlink Command:**
744 744  
745 745  0x28 01 ~/~/ Same As AT+SYNCMOD=1
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756 756  |**Command Example**|**Function**
757 757  |AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
758 758  
759 -
760 760  **Downlink Command:**
761 761  
762 762  0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
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812 812  OK
813 813  )))
814 814  
815 -
816 816  **Downlink Command:**
817 817  
818 818  No downlink commands for feature
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850 850  OK
851 851  )))
852 852  
853 -
854 854  **Downlink Command:**
855 855  
856 856  No downlink commands for feature
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870 870  OK
871 871  )))
872 872  
873 -
874 874  **Downlink Command: 0xA3**
875 875  
876 876  * Example: 0xA301 ~/~/Same as AT+CLRDTA
877 877  
878 878  
879 -
880 -
881 881  = Battery & How to replace =
882 882  
883 883  == Battery Type ==
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