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...	...	@@ -189,7 +189,6 @@
189	189
190	190	* Counting
191	191
192		-
193	193	== 1.4  Applications ==
194	194
195	195
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205	205
206	206	* Smart Factory
207	207
208		-
209	209	== 1.5 Hardware Variants ==
210	210
211	211
...	...	@@ -223,7 +223,6 @@
223	223	* 1 x Counting Port
224	224	)))
225	225
226		-
227	227	= 2. Power ON Device =
228	228
229	229
...	...	@@ -322,7 +322,6 @@
322	322
323	323	* (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
324	324
325		-
326	326	=== 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
327	327
328	328
...	...	@@ -391,7 +391,6 @@
391	391	** DO1 is high in case there is load between DO1 and V+.
392	392	** DO1 LED is off in both case
393	393
394		-
395	395	=== 3.3.2 AT+MOD~=2, (Double DI Counting) ===
396	396
397	397
...	...	@@ -857,7 +857,6 @@
857	857
858	858	* (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
859	859
860		-
861	861	=== 3.4.1 Common Commands ===
862	862
863	863
...	...	@@ -1487,7 +1487,7 @@
1487	1487
1488	1488
1489	1489	(((
1490		-The DI port of LT-22222-L can support NPN or PNP output sensor.
	1484	+The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1491	1491	)))
1492	1492
1493	1493	(((
...	...	@@ -1600,6 +1600,16 @@
1600	1600	)))
1601	1601
1602	1602
	1597	+(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
	1598	+
	1599	+From above DI ports circuit, we can see that active the photocoupler will need to have a voltage difference between DI+ and DI- port. While the Dry Contact sensor is a passive component which can't provide this voltage difference.
	1600	+
	1601	+To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
	1602	+
	1603	+[[image:image-20230616235145-1.png]]
	1604	+
	1605	+
	1606	+
1603	1603	=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1604	1604
1605	1605
...	...	@@ -1709,7 +1709,6 @@
1709	1709	|**RO1**|
1710	1710	|**RO2**|
1711	1711
1712		-
1713	1713	= 4. Use AT Command =
1714	1714
1715	1715	== 4.1 Access AT Command ==
...	...	@@ -2301,7 +2301,6 @@
2301	2301	* (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2302	2302	* (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2303	2303
2304		-
2305	2305	= 9. Packing Info =
2306	2306
2307	2307
...	...	@@ -2319,7 +2319,6 @@
2319	2319	* Package Size / pcs : 14.5 x 8 x 5 cm
2320	2320	* Weight / pcs : 170g
2321	2321
2322		-
2323	2323	= 10. Support =
2324	2324
2325	2325