Changes for page LT-22222-L -- LoRa I/O Controller User Manual

Last modified by Saxer Lin on 2025/04/15 17:24

From version < 163.1 >

edited by Dilisi S
on 2024/11/06 04:29

To version < 162.1 >

edited by Dilisi S
on 2024/11/05 03:38

Change comment: edits from section 3.6.3

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@@ -17,7 +17,7 @@
--= 1. Introduction =
++= 1.Introduction =
  == 1.1 What is the LT-22222-L I/O Controller? ==
@@ -40,9 +40,9 @@
  * If there is public LoRaWAN network coverage in the area where you plan to install the device (e.g., The Things Network), you can select a network and register the LT-22222-L I/O controller with it.
  * If there is no public LoRaWAN coverage in your area, you can set up a LoRaWAN gateway, or multiple gateways, and connect them to a LoRaWAN network server to create adequate coverage. Then, register the LT-22222-L I/O controller with this network.
--* Set up your own private LoRaWAN network.
++* Setup your own private LoRaWAN network.
--> You can use a LoRaWAN gateway, such as the Dragino LG308, to expand or create LoRaWAN coverage in your area.
++> You can use the Dragino LG308 gateway to expand or create LoRaWAN coverage in your area.
  )))
  (((
@@ -60,12 +60,12 @@
  * Power Consumption:
  ** Idle: 4mA@12v
  ** 20dB Transmit: 34mA@12v
--* Operating Temperature: -40 ~~ 85 Degrees, No Dew
++* Operating Temperature: -40 ~~ 85 Degree, No Dew
  (% style="color:#037691" %)**Interface for Model: LT22222-L:**
  * 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
--* 2 x Digital Output (NPN output. Max pull-up voltage 36V,450mA)
++* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
  * 2 x Relay Output (5A@250VAC / 30VDC)
  * 2 x 0~~20mA Analog Input (res:0.01mA)
  * 2 x 0~~30V Analog Input (res:0.01v)
@@ -78,7 +78,7 @@
  ** Band 2 (LF): 410 ~~ 528 Mhz
  * 168 dB maximum link budget.
  * +20 dBm - 100 mW constant RF output vs.
--* +14 dBm high-efficiency PA.
++* +14 dBm high efficiency PA.
  * Programmable bit rate up to 300 kbps.
  * High sensitivity: down to -148 dBm.
  * Bullet-proof front end: IIP3 = -12.5 dBm.
@@ -98,7 +98,7 @@
  * Optional Customized LoRa Protocol
  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
  * AT Commands to change parameters
--* Remotely configure parameters via LoRaWAN Downlink
++* Remote configure parameters via LoRa Downlink
  * Firmware upgradable via program port
  * Counting
@@ -139,7 +139,7 @@
  * 1 x bracket for wall mounting
  * 1 x programming cable
--Attach the LoRaWAN antenna to the antenna connector, ANT,** **located on the top right side of the device, next to the upper terminal block. Secure the antenna by tightening it clockwise.
++Attach the LoRaWAN antenna to the connector labeled **ANT** (located on the top right side of the device, next to the upper terminal block). Secure the antenna by tightening it clockwise.
  == 2.2 Terminals ==
@@ -169,9 +169,9 @@
  |(% style="width:296px" %)DO2|(% style="width:334px" %)Digital Output 2
  |(% style="width:296px" %)DO1|(% style="width:334px" %)Digital Output 1
--== 2.3 Powering the LT-22222-L   ==
++== 2.3 Powering ==
--The LT-22222-L I/O Controller can be powered by a 7–24V DC power source. Connect the power supply’s positive wire to the VIN and the negative wire to the GND screw terminals. The power indicator (PWR) LED will turn on when the device is properly powered.
++The LT-22222-L I/O Controller can be powered by a 7–24V DC power source. Connect the power supply’s positive wire to the VIN screw terminal and the negative wire to the GND screw terminal. The power indicator (PWR) LED will turn on when the device is properly powered.
  [[image:1653297104069-180.png]]
@@ -181,9 +181,9 @@
  == 3.1 How does it work? ==
--By default, the LT-22222-L is configured to operate in LoRaWAN Class C mode. It supports OTAA (Over-the-Air Activation), the most secure method for activating a device with a LoRaWAN network server. The LT-22222-L comes with device registration information that allows you to register it with a LoRaWAN network, enabling the device to perform OTAA activation with the network server upon initial power-up and after any subsequent reboots.
++The LT-22222-L is configured to operate in LoRaWAN Class C mode by default. It supports OTAA (Over-the-Air Activation), which is the most secure method for activating a device with a LoRaWAN network server. The LT-22222-L comes with device registration information that allows you to register it with a LoRaWAN network, enabling the device to perform OTAA activation with the network server upon initial power-up and after any subsequent reboots.
--For LT-22222-L, the LED will show the Join status: After powering on, the TX LED will fast-blink 5 times which means the LT-22222-L will enter the working mode and start to JOIN the LoRaWAN network. The TX LED will be on for 5 seconds after joining the network. When there is a message from the server, the RX LED will be on for 1 second.
++For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**TX LED**(%%) will be on for 5 seconds after joined in network. When there is message from server, the RX LED will be on for 1 second.
  In case you can't set the root key and other identifiers in the network server and must use them from the server, you can use [[AT Commands>>||anchor="H4.UseATCommand"]] to configure them on the device.
@@ -205,7 +205,7 @@
  * Log in to your [[The Things Stack Sandbox>>https://eu1.cloud.thethings.network]] account.
  * Create an application if you do not have one yet.
--* Register LT-22222-L with that application. Two registration options are available:
++* Register LT-22222-L with that application. Two registration options available:
  ==== Using the LoRaWAN Device Repository: ====
@@ -213,12 +213,12 @@
  * On the **Register end device** page:
  ** Select the option **Select the end device in the LoRaWAN Device Repository**.
  ** Choose the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)**.
--** Select the **Frequency plan** that matches your device.
++** Select the **Frequency plan** that matches with your device.
  [[image:lt-22222-l-dev-repo-reg-p1.png||height="625" width="1000"]]
  *
--** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button.
++** Enter the **AppEUI** in the **JoinEUI** field and click **Confirm** button.
  ** Enter the **DevEUI** in the **DevEUI** field.
  ** Enter the **AppKey** in the **AppKey** field.
  ** In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
@@ -230,17 +230,17 @@
  * On the **Register end device** page:
  ** Select the **Enter end device specifies manually** option as the input method.
--** Select the **Frequency plan** that matches your device.
++** Select the **Frequency plan** that matches with your device.
  ** Select the **LoRaWAN version**.
  ** Select the **Regional Parameters version**.
  ** Click **Show advanced activation, LoRaWAN class and cluster settings** link to expand the section.
--** Select **Over the air activation (OTAA)** option under the **Activation mode**
++** Select **Over the air activation (OTAA)** option under **Activation mode**
  ** Select **Class C (Continuous)** from the **Additional LoRaWAN class capabilities**.
  [[image:lt-22222-l-manually-p1.png||height="625" width="1000"]]
--* Enter **AppEUI** in the **JoinEUI** field and click the **Confirm** button.
++* Enter **AppEUI** in the **JoinEUI** field and click **Confirm** button.
  * Enter **DevEUI** in the **DevEUI** field.
  * Enter **AppKey** in the **AppKey** field.
  * In the **End device ID** field, enter a unique name within this application for your LT-22222-N.
@@ -259,7 +259,7 @@
  == 3.3 Uplink Payload formats ==
--The LT-22222-L has 5 working modes. It also has an interrupt/trigger mode for different types of applications that can be used together with any working mode as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
++The LT-22222-L has 5 working modes. It also has an interrupt/trigger mode for different type applications that can be used together with all the working modes as an additional feature. The default mode is MOD1 and you can switch between these modes using AT commands.
  * (% style="color:blue" %)**MOD1**(%%): (default mode/factory set): 2 x ACI + 2AVI + DI + DO + RO
@@ -277,7 +277,7 @@
  (((
--The uplink payload is 11 bytes long. Uplink packets are sent over LoRaWAN FPort=2. By default, one uplink is sent every 10 minutes. (% style="display:none" wfd-invisible="true" %)
++The uplink payload is 11 bytes long. Uplink packets are sent over LoRaWAN FPort=2. By default, one uplink is sent every 10 minutes. (% style="display:none" %)
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
@@ -295,7 +295,7 @@
  )))
  (((
--(% style="color:#4f81bd" %)*** DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
++(% style="color:#4f81bd" %)*** DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
@@ -302,7 +302,7 @@
  |RO1|RO2|--DI3--|DI2|DI1|--DO3--|DO2|DO1
  )))
--* RO is for the relay. ROx=1: closed, ROx=0 always open.
++* RO is for relay. ROx=1 : closed, ROx=0 always open.
  * DI is for digital input. DIx=1: high or floating, DIx=0: low.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
@@ -321,22 +321,25 @@
  ACI2 channel current is 0x1300/1000=4.864mA
--The last byte 0xAA= **10101010**(b) means,
++The last byte 0xAA= 10101010(b) means,
--* [1] The RO1 relay channel is CLOSED, and the RO1 LED is ON.
--* [0] The RO2 relay channel is OPEN, and the RO2 LED is OFF.
++* [1] RO1 relay channel is closed, and the RO1 LED is ON.
++* [0] RO2 relay channel is open, and RO2 LED is OFF.
  * [1] DI3 - not used for LT-22222-L.
--* [0] DI2 channel input is LOW, and the DI2 LED is OFF.
++* [0] DI2 channel input is low, and the DI2 LED is OFF.
  * [1] DI1 channel input state:
--** DI1 is FLOATING when no sensor is connected between DI1+ and DI1-.
--** DI1 is HIGH when a sensor is connected between DI1- and DI1+ and the sensor is ACTIVE.
++** DI1 is floating when there is no load between DI1 and V+.
++** DI1 is high when there is load between DI1 and V+.
  ** DI1 LED is ON in both cases.
--* [0] DO3 - not used for LT-22222-L.
--* [1] DO2 channel output is LOW, and the DO2 LED is ON.
++* [0] DO3 channel output state:
++** DO3 is float in case no load between DO3 and V+.
++** DO3 is high in case there is load between DO3 and V+.
++** DO3 LED is OFF in both case
++* [1] DO2 channel output is low, and the DO2 LED is ON.
  * [0] DO1 channel output state:
--** DO1 is FLOATING when there is no load between DO1 and V+.
--** DO1 is HIGH when there is a load between DO1 and V+.
--** DO1 LED is OFF in both cases.
++** DO1 is floating when there is no load between DO1 and V+.
++** DO1 is high when there is load between DO1 and V+.
++** DO1 LED is OFF in both case.
  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
@@ -356,13 +356,13 @@
  )))
  (((
--(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
++(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
  |RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
--* RO is for the relay. ROx=1: closed,  ROx=0 always open.
++* RO is for relay. ROx=1 : closed,  ROx=0 always open.
  )))
  * FIRST: Indicates that this is the first packet after joining the network.
@@ -375,7 +375,7 @@
  )))
  (((
--**To activate this mode, run the following AT commands:**
++**To activate this mode, please run the following AT command:**
  )))
  (((
@@ -396,17 +396,17 @@
  (((
  **For LT22222-L:**
--(% style="color:blue" %)**AT+TRIG1=0,100**(%%)** (sets the DI1 port to trigger on a LOW level. The valid signal duration is 100ms) **
++(% style="color:blue" %)**AT+TRIG1=0,100**(%%)**    (set the DI1 port to trigger on a low level, the valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+TRIG1=1,100**(%%)** (sets the DI1 port to trigger on a HIGH level. The valid signal duration is 100ms) **
++(% style="color:blue" %)**AT+TRIG1=1,100**(%%)**    (set the DI1 port to trigger on a high level, the valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+TRIG2=0,100**(%%)** (sets the DI2 port to trigger on a LOW level. The valid signal duration is 100ms) **
++(% style="color:blue" %)**AT+TRIG2=0,100**(%%)**    (set the DI2 port to trigger on a low level, the valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+TRIG2=1,100**(%%)** (sets the DI2 port to trigger on a HIGH level. The valid signal duration is 100ms) **
++(% style="color:blue" %)**AT+TRIG2=1,100**(%%)**    (set the DI2 port to trigger on a high level, the valid signal duration is 100ms) **
--(% style="color:blue" %)**AT+SETCNT=1,60**(%%)** (sets the COUNT1 value to 60)**
++(% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set the COUNT1 value to 60)**
--(% style="color:blue" %)**AT+SETCNT=2,60 **(%%)**(sets the COUNT2 value to 60)**
++(% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set the COUNT2 value to 60)**
  )))
@@ -424,7 +424,7 @@
  )))|DIDORO*|Reserve|MOD
  (((
--(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
++(% style="color:#4f81bd" %)***DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
@@ -431,17 +431,17 @@
  |RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
  )))
--* RO is for the relay. ROx=1: closed, ROx=0 always open.
++* RO is for relay. ROx=1 : closed, ROx=0 always open.
  * FIRST: Indicates that this is the first packet after joining the network.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
  (((
--(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
++(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
  )))
  (((
--**To activate this mode, run the following AT commands:**
++**To activate this mode, please run the following AT command:**
  )))
  (((
@@ -456,7 +456,7 @@
  (((
  AT Commands for counting:
--The AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
++The AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]. Use only the commands that match 'DI'.
  )))
@@ -478,7 +478,7 @@
  )))
  (((
--(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
++(% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
@@ -485,18 +485,18 @@
  |RO1|RO2|FIRST|Reserve|Reserve|--DO3--|DO2|DO1
  )))
--* RO is for the relay. ROx=1: closed, ROx=0 always open.
++* RO is for relay. ROx=1 : closed, ROx=0 always open.
  * FIRST: Indicates that this is the first packet after joining the network.
  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
  (((
--(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
++(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
  )))
  (((
--**To activate this mode, run the following AT commands:**
++**To activate this mode, please run the following AT command:**
  )))
  (((
@@ -509,19 +509,19 @@
  )))
  (((
--Other AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
  )))
  (((
  **In addition to that,  below are the commands for AVI1 Counting:**
--(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**           (Sets AVI Count to 60)**
++(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**           (set AVI Count to 60)**
  (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**       (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
  (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**    (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
--(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**    (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
++(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**    (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
  )))
@@ -528,7 +528,7 @@
  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
--**LT22222-L**: In this mode, the DI1 is used as a counting pin.
++**LT22222-L**: This mode the DI1 is used as a counting pin.
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
  |(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
@@ -543,25 +543,25 @@
  )))|MOD
  (((
--(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination of RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1, for a total of 1 byte, as shown below.
++(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
--|**bit 7**|**bit 6**|**bit 5**|**bit 4**|**bit 3**|**bit 2**|**bit 1**|**bit 0**
++|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
  )))
--* RO is for the relay. ROx=1: closed, ROx=0 always open.
--* FIRST: Indicates that this is the first packet after joining the network.
++* RO is for relay. ROx=1 : close, ROx=0 always open.
++* FIRST: Indicate this is the first packet after join network.
  * (((
--DO is for reverse digital output. DOx=1: output low, DOx=0: high or floating.
++DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
  )))
  (((
--(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
++(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
  )))
  (((
--**To activate this mode, run the following AT commands:**
++**To use this mode, please run:**
  )))
  (((
@@ -574,7 +574,7 @@
  )))
  (((
--Other AT Commands for counting are similar to the [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]]s.
++Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
  )))
@@ -581,23 +581,23 @@
  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
--(% style="color:#4f81bd" %)**This mode is optional and intended for trigger purposes. It can operate together with other modes.**
++(% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
--For example, if you configured the following commands:
++For example, if user has configured below commands:
  * **AT+MOD=1 **            **~-~->**   The normal working mode
--* **AT+ADDMOD6=1**   **~-~->**   Enable trigger mode
++* **AT+ADDMOD6=1**   **~-~->**   Enable trigger
--The LT-22222-L will continuously monitor AV1, AV2, AC1, and AC2 every 5 seconds. LT will send uplink packets in two cases:
++LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
--1. Periodically uplink (Based on TDC time). The payload is the same as in normal mode (MOD=1 for the commands above). These are (% style="color:#4f81bd" %)**unconfirmed**(%%) uplinks.
--1. Trigger uplink when the trigger condition is met. LT will send two packets in this case. The first uplink uses the payload specified in trigger mode (MOD=6). The second packet uses the normal mode payload (MOD=1 as set above). Both are (% style="color:#4f81bd" %)**CONFIRMED uplinks.**
++1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
++1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
--
  (% style="color:#037691" %)**AT Command to set Trigger Condition**:
--(% style="color:#4f81bd" %)**Trigger based on voltage**:
++(% style="color:#4f81bd" %)**Trigger base on voltage**:
++
  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
@@ -608,8 +608,9 @@
  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
--(% style="color:#4f81bd" %)**Trigger based on current**:
++(% style="color:#4f81bd" %)**Trigger base on current**:
++
  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
@@ -618,6 +618,7 @@
  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
++
  (% style="color:#4f81bd" %)**Trigger base on DI status**:
  DI status trigger Flag.
@@ -1420,7 +1420,7 @@
  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
--Support NPN-type sensor
++Support NPN Type sensor
  [[image:1653356991268-289.png]]
@@ -1434,7 +1434,7 @@
  (((
  (((
--The part of the internal circuit of the LT-22222-L shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH and the DI LED status changes.
++The part of the internal circuit of the LT-22222-L shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH, and the DI LED status changes.
  )))
@@ -1453,11 +1453,11 @@
  )))
  (((
--(% style="color:#0000ff" %)**Example 1**(%%): Connecting to a low-active sensor.
++(% style="color:blue" %)**Example1**(%%): Connecting to a low-active sensor.
  )))
  (((
--This type of sensor outputs a low (GND) signal when active.
++This type of sensors outputs a low (GND) signal when active.
  )))
  * (((
@@ -1484,11 +1484,11 @@
  )))
  (((
--(% style="color:#0000ff" %)**Example 2**(%%): Connecting to a high-active sensor.
++(% style="color:blue" %)**Example2**(%%): Connecting to a high-active sensor.
  )))
  (((
--This type of sensor outputs a high signal (e.g., 24V) when active.
++This type of sensors outputs a high signal (e.g., 24V) when active.
  )))
  * (((
@@ -1507,7 +1507,7 @@
  )))
  (((
--If **DI1+ = 24V**, the resulting current[[image:1653968155772-850.png||height="23" width="19"]] is 24mA, Therefore, the LT-22222-L will detect this high-active signal.
++If **DI1+ = 24V**, the resulting current[[image:1653968155772-850.png||height="23" width="19"]] 24mA , Therefore, the LT-22222-L will detect this high-active signal.
  )))
  (((
@@ -1515,7 +1515,7 @@
  )))
  (((
--(% style="color:#0000ff" %)**Example 3**(%%): Connecting to a 220V high-active sensor.
++(% style="color:blue" %)**Example3**(%%): Connecting to a 220V high-active sensor.
  )))
  (((
@@ -1538,13 +1538,13 @@
  )))
  (((
--If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" wfd-invisible="true" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K  = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.
++If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.
  )))
  (% style="color:blue" %)**Example4**(%%): Connecting to Dry Contact sensor
--From the DI port circuit above, you can see that activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference.
++From DI port circuit above, you can see that activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference.
  To detect a Dry Contact, you can supply a power source to one pin of the Dry Contact. Below is a reference circuit diagram.
@@ -1560,7 +1560,7 @@
  (% style="color:blue" %)**NPN output**(%%): GND or Float. The maximum voltage that can be applied to the output pin is 36V.
--(% style="color:red" %)**Note: The DO pins will float when the device is powered off.**
++(% style="color:red" %)**Note: The DO pins will float when device is powered off.**
  [[image:1653357531600-905.png]]
@@ -1645,17 +1645,17 @@
  Transmit a LoRa packet: TX blinks once
  )))
  )))
--|**RX**|RX blinks once when receiving a packet.
--|**DO1**|For LT-22222-L: ON when DO1 is low, OFF when DO1 is high
--|**DO2**|For LT-22222-L: ON when DO2 is low, OFF when DO2 is high
++|**RX**|RX blinks once when receive a packet.
++|**DO1**|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
++|**DO2**|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
  |**DI1**|(((
--For LT-22222-L: ON when DI1 is high, OFF when DI1 is low
++For LT-22222-L: ON when DI1 is high, LOW when DI1 is low
  )))
  |**DI2**|(((
--For LT-22222-L: ON when DI2 is high, OFF when DI2 is low
++For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
  )))
--|**RO1**|For LT-22222-L: ON when RO1 is closed, OFF when RO1 is open
--|**RO2**|For LT-22222-L: ON when RO2 is closed, OFF when RO2 is open
++|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
++|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
  = 4. Using AT Command =
@@ -2024,7 +2024,7 @@
  * For bug fix
  * Change LoRaWAN bands.
--Below is the hardware connection for how to upload an image to the LT:
++Below shows the hardware connection for how to upload an image to the LT:
  [[image:1653359603330-121.png]]

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