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68	68	* Remote configure parameters via LoRa Downlink
69	69	* Firmware upgradable via program port
70	70
71		-
72	72	== 1.3 Applications ==
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74	74
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79	79	* Smart Cities
80	80	* Smart Factory
81	81
82		-
83	83	== 1.4 Dimension ==
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85	85
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481	481	|(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
482	482	|(% style="width:184px" %)Got a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
483	483
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	483	+
484	484	= 5. Battery & How to replace =
485	485
	486	+
486	486	== 5.1 Battery Type and replace ==
487	487
	489	+
488	488	(((
489	489	LDS02 is equipped with 2 x AAA LR03 batteries. If the batteries running low (shows 2.1v in the platform). User can buy generic AAA battery and replace it.
490	490
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491	491	(% style="color:red" %)**Note:**
492	492
493	493	1. The LDS02 doesn't have any screw, use can use nail to open it by the middle.
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509	509	[[image:1654675278044-307.png]]
510	510
511	511
	515	+
512	512	== 5.2 Power Consumption Analyze ==
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514	514	(((
515	515	Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
516	516	)))
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520	520	)))
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	528	+
523	523	= 6. Use AT Command =
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	531	+
525	525	== 6.1 Access AT Command ==
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527	527	LDS02 supports AT Command set. User can use a USB to TTL adapter to configure LDS02 via use AT command, as below.
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529	529	[[image:image-20220609085453-1.png]]
530	530
531	531
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554	554	)))
555	555
556	556	(((
557		-When entering the first command, the (% style="color:red" %)**RED LED**(%%) will on and user can now input AT Commands. After input all needed AT Commands, please input AT+CLPM=1 to set the device to work in Low Power mode and (% style="color:red" %)**RED LED**(%%) will be off.
	566	+When entering the first command, the (% style="color:red" %)**RED LED**(%%) will on and user can now input AT Commands. After input all needed AT Commands, please input **AT+CLPM=1** to set the device to work in Low Power mode and (% style="color:red" %)**RED LED**(%%) will be off.
558	558	)))
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560	560	(((
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562	562	)))
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	574	+
565	565	= 7. FAQ =
566	566
	577	+
567	567	== 7.1 How to upgrade the image? ==
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569	569	User can upgrade the of LDS02 for bug fix, new features, or change working region. The upgrade instruction is here: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
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	584	+
572	572	== 7.2 How to change the LoRa Frequency Bands/Region? ==
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574	574	If user has for example US915 frequency and want to change it to AS923 frequency. User can follow the introduction for [[how to upgrade image>>||anchor="H7.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
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	591	+
577	577	== 7.3 Can I disable uplink for each event to save battery life? ==
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579	579	Yes, User can use below method to disable this:
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582		-(% style="color:#4f81bd" %)**via AT Command**:
	598	+(% style="color:blue" %)**via AT Command**:
583	583
584		-AT+DISALARM=1, End node will only send packet in TDC time.
	600	+(% style="color:red" %)**AT+DISALARM=1**(%%), End node will only send packet in TDC time.
585	585
586		-AT+DISALARM=0, End node will send packet in TDC time or status change for door sensor.
	602	+(% style="color:red" %)**AT+DISALARM=0**(%%), End node will send packet in TDC time or status change for door sensor.
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588	588
589		-(% style="color:#4f81bd" %)**via LoRaWAN downlink Command**:
	605	+(% style="color:blue" %)**via LoRaWAN downlink Command**:
590	590
591		-0xA701 : Equal to AT+DISALARM=1
	607	+(% style="color:red" %)**0xA701**(%%) : Equal to AT+DISALARM=1
592	592
593		-0xA700 : Equal to AT+DISALARM=0
	609	+(% style="color:red" %)**0xA700**(%%) : Equal to AT+DISALARM=0
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595	595
	612	+
596	596	= 8. Order Info =
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	615	+
598	598	**Part Number: (% style="color:blue" %)LDS02-XXX(%%)**
599	599
600	600	(% style="color:blue" %)**XXX:**
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609	609	* (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
610	610	* (% style="color:red" %)**CN779**(%%): frequency bands CN779
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	633	+
612	612	= 9. Packing Info =
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614	614	(((
615	615	**Package Includes**:
616	616	)))
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627	627	Device Size: 69.2 x 29.2 x 14.8 mm
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631	631	)))
632	632
633	633	= 10. Support =
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	659	+
635	635	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
636	636	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
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