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1		-XWiki.Xiaoling
	1	+XWiki.Edwin

Content

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59	59
60	60	== 1.2 Specifications ==
61	61
62		-(((
63		-
64		-
65	65	(% style="color:#037691" %)**Hardware System:**
66		-)))
67	67
68		-* (((
69		-STM32L072xxxx MCU
70		-)))
71		-* (((
72		-SX1276/78 Wireless Chip
73		-)))
74		-* (((
75		-(((
76		-Power Consumption:
77		-)))
	64	+* STM32L072xxxx MCU
	65	+* SX1276/78 Wireless Chip
	66	+* Power Consumption:
78	78
79		-* (((
80		-Idle: 4mA@12v
81		-)))
82		-* (((
83		-20dB Transmit: 34mA@12v
84		-)))
85		-)))
	68	+* Idle: 4mA@12v
	69	+* 20dB Transmit: [[34mA@12v>>mailto:34mA@12v]]
86	86
87		-(((
88		-
89	89
90	90	(% style="color:#037691" %)**Interface for Model: LT22222-L:**
91		-)))
92	92
93		-* (((
94		-2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
95		-)))
96		-* (((
97		-2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
98		-)))
99		-* (((
100		-2 x Relay Output (5A@250VAC / 30VDC)
101		-)))
102		-* (((
103		-2 x 0~~20mA Analog Input (res:0.01mA)
104		-)))
105		-* (((
106		-2 x 0~~30V Analog Input (res:0.01v)
107		-)))
108		-* (((
109		-Power Input 7~~ 24V DC.
110		-)))
	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.
111	111
112		-(((
113		-
114	114
115	115	(% style="color:#037691" %)**LoRa Spec:**
116		-)))
117	117
	84	+
118	118	* (((
119	119	(((
120	120	Frequency Range:
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1159	1159	)))
1160	1160
1161	1161	(((
1162		-01: Close ,  00: Open , 11: No action
	1129	+00: Close ,  01: Open , 11: No action
1163	1163
1164	1164	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1165	1165	|(% 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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1590	1590	[[image:image-20240219115718-1.png]]
1591	1591
1592	1592
1593		-
1594	1594	=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1595	1595
1596	1596
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1665	1665	== 3.7 LEDs Indicators ==
1666	1666
1667	1667
1668		-(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1669		-|(% 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**
1670	1670	|**PWR**|Always on if there is power
1671	1671	|**SYS**|(((
1672	1672	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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1709	1709	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.
1710	1710	)))
1711	1711
1712		-(((
1713		-
1714		-)))
1715		-
1716	1716	[[image:1653358238933-385.png]]
1717	1717
1718	1718