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Author

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1		-XWiki.Xiaoling
	1	+XWiki.Bei

Content

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64	64	)))
65	65
66	66	* (((
67		-STM32L072CZT6 MCU
	67	+STM32L072xxxx MCU
68	68	)))
69	69	* (((
70	70	SX1276/78 Wireless Chip
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186	186	* Firmware upgradable via program port
187	187	* Counting
188	188
	189	+
189	189	== 1.4  Applications ==
190	190
191	191
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196	196	* Smart Cities
197	197	* Smart Factory
198	198
	200	+
199	199	== 1.5 Hardware Variants ==
200	200
201	201
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210	210	* 1 x Counting Port
211	211	)))
212	212
	215	+
213	213	= 2. Power ON Device =
214	214
215	215
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770	770
771	771	* (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
772	772
	776	+
773	773	=== 3.4.1 Common Commands ===
774	774
775	775
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1247	1247
1248	1248
1249	1249
1250		-==== 3.4.2.20 Reset save DR DO state ====
	1254	+==== 3.4.2.20 Reset save RO DO state ====
1251	1251
1252	1252
1253	1253	* (% style="color:#037691" %)**AT Command:**
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1540	1540	=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1541	1541
1542	1542
1543		-NPN output: GND or Float. Max voltage can apply to output pin is 36v.
	1547	+**NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1544	1544
	1549	+Note: DO pins go to float when device is power off.
	1550	+
1545	1545	[[image:1653357531600-905.png]]
1546	1546
1547	1547
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1582	1582
1583	1583
1584	1584	(((
1585		-The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
	1591	+The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device's Power Line to in serial of RO1_1 and RO_2. Such as below:
	1592	+
	1593	+**Note**: RO pins go to Open(NO) when device is power off.
1586	1586	)))
1587	1587
1588	1588	[[image:image-20220524100215-9.png]]
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2125	2125	[[image:image-20221006170630-1.png||height="610" width="945"]]
2126	2126
2127	2127
2128		-== 5.8 Can LT22222 save RO state? ==
	2136	+== 5.8 Can LT22222-L save RO state? ==
2129	2129
	2138	+
2130	2130	Firmware version needs to be no less than 1.6.0.
2131	2131
2132	2132
	2142	+
2133	2133	= 6. Trouble Shooting =
2134	2134
2135	2135
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2192	2192	* (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2193	2193	* (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2194	2194
	2205	+
2195	2195	= 8. Packing Info =
2196	2196
2197	2197
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2209	2209	* Package Size / pcs : 14.5 x 8 x 5 cm
2210	2210	* Weight / pcs : 170g
2211	2211
2212		-
2213	2213
2214	2214	= 9. Support =
2215	2215
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2221	2221	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:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2222	2222
2223	2223
2224		-
2225	2225
2226	2226	)))
2227	2227

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