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Title

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1		-LT-22222-L LoRa IO Controller User Manual
	1	+LT-22222-L -- LoRa IO Controller User Manual

Content

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3	3
4	4
5	5
	6	+
	7	+
	8	+
	9	+
6	6	**Table of Contents:**
7	7
8	8	{{toc/}}
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55	55
56	56	== 1.2 Specifications ==
57	57
58		-(((
59		-
60		-
61	61	(% style="color:#037691" %)**Hardware System:**
62		-)))
63	63
64		-* (((
65		-STM32L072xxxx MCU
66		-)))
67		-* (((
68		-SX1276/78 Wireless Chip
69		-)))
70		-* (((
71		-(((
72		-Power Consumption:
73		-)))
	64	+* STM32L072xxxx MCU
	65	+* SX1276/78 Wireless Chip
	66	+* Power Consumption:
74	74
75		-* (((
76		-Idle: 4mA@12v
77		-)))
78		-* (((
79		-20dB Transmit: 34mA@12v
80		-)))
81		-)))
	68	+* Idle: 4mA@12v
	69	+* 20dB Transmit: [[34mA@12v>>mailto:34mA@12v]]
82	82
83		-(((
84		-
85	85
86	86	(% style="color:#037691" %)**Interface for Model: LT22222-L:**
87		-)))
88	88
89		-* (((
90		-2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
91		-)))
92		-* (((
93		-2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
94		-)))
95		-* (((
96		-2 x Relay Output (5A@250VAC / 30VDC)
97		-)))
98		-* (((
99		-2 x 0~~20mA Analog Input (res:0.01mA)
100		-)))
101		-* (((
102		-2 x 0~~30V Analog Input (res:0.01v)
103		-)))
104		-* (((
105		-Power Input 7~~ 24V DC.
106		-)))
	74	+* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
	75	+* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
	76	+* 2 x Relay Output (5A@250VAC / 30VDC)
	77	+* 2 x 0~~20mA Analog Input (res:0.01mA)
	78	+* 2 x 0~~30V Analog Input (res:0.01v)
	79	+* Power Input 7~~ 24V DC.
107	107
108		-(((
109		-
110	110
111	111	(% style="color:#037691" %)**LoRa Spec:**
112		-)))
113	113
	84	+
114	114	* (((
115	115	(((
116	116	Frequency Range:
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1155	1155	)))
1156	1156
1157	1157	(((
1158		-01: Close ,  00: Open , 11: No action
	1129	+00: Close ,  01: Open , 11: No action
1159	1159
1160	1160	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1161	1161	|(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**RO1**|(% style="background-color:#4f81bd; color:white" %)**RO2**
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1581	1581
1582	1582	[[image:image-20230616235145-1.png]]
1583	1583
	1555	+(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1584	1584
	1557	+[[image:image-20240219115718-1.png]]
	1558	+
	1559	+
1585	1585	=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1586	1586
1587	1587
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1656	1656	== 3.7 LEDs Indicators ==
1657	1657
1658	1658
1659		-(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1660		-|(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:470px" %)**Feature**
	1634	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
	1635	+|(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:460px" %)**Feature**
1661	1661	|**PWR**|Always on if there is power
1662	1662	|**SYS**|(((
1663	1663	After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
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1700	1700	LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1701	1701	)))
1702	1702
1703		-(((
1704		-
1705		-)))
1706		-
1707	1707	[[image:1653358238933-385.png]]
1708	1708
1709	1709
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2334	2334	* LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
2335	2335	* [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2336	2336	* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2337		-
2338		-