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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 ==
	86	+
	87	+(% class="wikigeneratedid" %)
	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.
	89	+
	90	+(% class="wikigeneratedid" %)
	91	+[[image:image-20220522232442-1.png||height="387" width="648"]]
	92	+
	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	+
	95	+
	96	+=== **Step 1**: Create Device n TTN ===
	97	+
	98	+Create a device in TTN V3 with the OTAA keys from LHT65N.
	99	+
	100	+Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
	101	+
	102	+[[image:image-20220522232812-2.png||height="219" width="279"]]
	103	+
	104	+User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
	105	+
	106	+Add APP EUI in the application.
	107	+
	108	+[[image:image-20220522232916-3.png]]
	109	+
	110	+
	111	+[[image:image-20220522232932-4.png]]
	112	+
	113	+
	114	+[[image:image-20220522232954-5.png]]
	115	+
	116	+Note: LHT65N use same payload as LHT65.
	117	+
	118	+[[image:image-20220522233026-6.png]]
	119	+
	120	+
	121	+Input APP EUI,  APP KEY and DEV EUI:
	122	+
	123	+[[image:image-20220522233118-7.png]]
	124	+
	125	+
	126	+=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
	127	+
	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	+
	130	+[[image:image-20220522233300-8.png]]
	131	+
	132	+
	133	+== Uplink Payload: ==
	134	+
	135	+The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default.
	136	+
	137	+After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once.
	138	+
	139	+
	140	+(% style="width:572px" %)
	141	+|(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:128px" %)**2**|(% style="width:103px" %)**2**|(% style="width:72px" %)**1**|(% style="width:89px" %)**4**
	142	+|(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)(((
	143	+[[Built-In>>path:#SHT20_Temperature]]
	144	+
	145	+[[Temperature>>path:#SHT20_Temperature]]
	146	+)))|(% style="width:103px" %)(((
	147	+[[Built-in>>path:#SHT20_Humidity]]
	148	+
	149	+[[Humidity>>path:#SHT20_Humidity]]
	150	+)))|(% style="width:72px" %)[[Ext>>path:#Extension_Sensor]] #|(% style="width:89px" %)[[Ext value>>path:#Extension_sensor_value]]
	151	+
	152	+* The First 6 bytes: has fix meanings for every LHT65N.
	153	+* The 7th byte (EXT #): defines the external sensor model.
	154	+* The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
	155	+
	156	+
	157	+=== Decoder in TTN V3 ===
	158	+
	159	+When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
	160	+
	161	+Below is the position to put the decoder and LHT65N decoder can be download from here:
	162	+
	163	+
	164	+[[image:image-20220522234118-10.png]]
	165	+
	166	+
85	85	== LED Indicator ==
86	86
87	87	The LHT65N has a triple color LED which for easy shows different stage.

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