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Author

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1		-XWiki.Edwin
	1	+XWiki.Xiaoling

Content

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3	3
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5	5
6		-
7		-
8		-
9		-
10	10	**Table of Contents:**
11	11
12	12	{{toc/}}
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59	59
60	60	== 1.2 Specifications ==
61	61
	58	+(((
	59	+
	60	+
62	62	(% style="color:#037691" %)**Hardware System:**
	62	+)))
63	63
64		-* STM32L072xxxx MCU
65		-* SX1276/78 Wireless Chip
66		-* Power Consumption:
	64	+* (((
	65	+STM32L072xxxx MCU
	66	+)))
	67	+* (((
	68	+SX1276/78 Wireless Chip
	69	+)))
	70	+* (((
	71	+(((
	72	+Power Consumption:
	73	+)))
67	67
68		-* Idle: 4mA@12v
69		-* 20dB Transmit: [[34mA@12v>>mailto:34mA@12v]]
	75	+* (((
	76	+Idle: 4mA@12v
	77	+)))
	78	+* (((
	79	+20dB Transmit: 34mA@12v
	80	+)))
	81	+)))
70	70
	83	+(((
	84	+
71	71
72	72	(% style="color:#037691" %)**Interface for Model: LT22222-L:**
	87	+)))
73	73
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.
	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	+)))
80	80
	108	+(((
	109	+
81	81
82	82	(% style="color:#037691" %)**LoRa Spec:**
	112	+)))
83	83
84		-
85	85	* (((
86	86	(((
87	87	Frequency Range:
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1126	1126	)))
1127	1127
1128	1128	(((
1129		-00: Close ,  01: Open , 11: No action
	1158	+01: Close ,  00: Open , 11: No action
1130	1130
1131	1131	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1132	1132	|(% 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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1557	1557	[[image:image-20240219115718-1.png]]
1558	1558
1559	1559
	1589	+
1560	1560	=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1561	1561
1562	1562
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1631	1631	== 3.7 LEDs Indicators ==
1632	1632
1633	1633
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**
	1664	+(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
	1665	+|(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:470px" %)**Feature**
1636	1636	|**PWR**|Always on if there is power
1637	1637	|**SYS**|(((
1638	1638	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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1675	1675	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.
1676	1676	)))
1677	1677
	1708	+(((
	1709	+
	1710	+)))
	1711	+
1678	1678	[[image:1653358238933-385.png]]
1679	1679
1680	1680