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19	19	== 1.1 What is LT Series I/O Controller ==
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21	21	(((
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24	24	The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
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165	165	)))
166	166	* (((
167	167	Packet engine up to 256 bytes with CRC.
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170	170
171		-
172		-)))
173	173
174	174	== 1.3 Features ==
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181	181	* Firmware upgradable via program port
182	182	* Counting
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	181	+
	182	+
	183	+
184	184	== 1.4  Applications ==
185	185
186	186	* Smart Buildings & Home Automation
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190	190	* Smart Cities
191	191	* Smart Factory
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	193	+
	194	+
	195	+
193	193	== 1.5 Hardware Variants ==
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195	195	(% border="1" style="background-color:#f7faff; width:500px" %)
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203	203	* 1 x Counting Port
204	204	)))
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	209	+
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	211	+
206	206	= 2. Power ON Device =
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208	208	The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
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773	773
774	774	* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
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	782	+
776	776	=== 3.4.1 Common Commands ===
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778	778	They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
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2004	2004	)))
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2006	2006	(((
2007		-== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
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2008	2008
2009		-If the device is not shut down, but directly powered off.
2010		-
2011		-It will default that this is a power-off state.
2012		-
2013		-In modes 2 to 5, DO RO status and pulse count are saved in flash.
2014		-
2015		-After restart, the status before power failure will be read from flash.
2016		-
2017	2017	= 6. Trouble Shooting =
2018	2018	)))
2019	2019