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68	68	* Remote configure parameters via LoRa Downlink
69	69	* Firmware upgradable via program port
70	70
	71	+
71	71	== 1.3 Applications ==
72	72
73	73
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78	78	* Smart Cities
79	79	* Smart Factory
80	80
	82	+
81	81	== 1.4 Dimension ==
82	82
83	83
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479	479	|(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
480	480	|(% style="width:184px" %)Got a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
481	481
482		-
483		-
484	484	= 5. Battery & How to replace =
485	485
486		-
487	487	== 5.1 Battery Type and replace ==
488	488
489		-
490	490	(((
491	491	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.
492	492
493		-
494	494	(% style="color:red" %)**Note:**
495	495
496	496	1. The LDS02 doesn't have any screw, use can use nail to open it by the middle.
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512	512	[[image:1654675278044-307.png]]
513	513
514	514
515		-
516	516	== 5.2 Power Consumption Analyze ==
517	517
518		-
519	519	(((
520	520	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:
521	521	)))
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525	525	)))
526	526
527	527
528		-
529	529	= 6. Use AT Command =
530	530
531		-
532	532	== 6.1 Access AT Command ==
533	533
534		-
535	535	LDS02 supports AT Command set. User can use a USB to TTL adapter to configure LDS02 via use AT command, as below.
536	536
537		-
538	538	[[image:image-20220609085453-1.png]]
539	539
540	540
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563	563	)))
564	564
565	565	(((
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.
	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.
567	567	)))
568	568
569	569	(((
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571	571	)))
572	572
573	573
574		-
575	575	= 7. FAQ =
576	576
577		-
578	578	== 7.1 How to upgrade the image? ==
579	579
580		-
581	581	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]]
582	582
583	583
584		-
585	585	== 7.2 How to change the LoRa Frequency Bands/Region? ==
586	586
587		-
588	588	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.
589	589
590	590
591		-
592	592	== 7.3 Can I disable uplink for each event to save battery life? ==
593	593
594		-
595	595	Yes, User can use below method to disable this:
596	596
597	597
598		-(% style="color:blue" %)**via AT Command**:
	582	+(% style="color:#4f81bd" %)**via AT Command**:
599	599
600		-(% style="color:red" %)**AT+DISALARM=1**(%%), End node will only send packet in TDC time.
	584	+AT+DISALARM=1, End node will only send packet in TDC time.
601	601
602		-(% style="color:red" %)**AT+DISALARM=0**(%%), End node will send packet in TDC time or status change for door sensor.
	586	+AT+DISALARM=0, End node will send packet in TDC time or status change for door sensor.
603	603
604	604
605		-(% style="color:blue" %)**via LoRaWAN downlink Command**:
	589	+(% style="color:#4f81bd" %)**via LoRaWAN downlink Command**:
606	606
607		-(% style="color:red" %)**0xA701**(%%) : Equal to AT+DISALARM=1
	591	+0xA701 : Equal to AT+DISALARM=1
608	608
609		-(% style="color:red" %)**0xA700**(%%) : Equal to AT+DISALARM=0
	593	+0xA700 : Equal to AT+DISALARM=0
610	610
611	611
612		-
613	613	= 8. Order Info =
614	614
615		-
616	616	**Part Number: (% style="color:blue" %)LDS02-XXX(%%)**
617	617
618	618	(% style="color:blue" %)**XXX:**
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627	627	* (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
628	628	* (% style="color:red" %)**CN779**(%%): frequency bands CN779
629	629
630		-
631		-
632		-
633		-
634	634	= 9. Packing Info =
635	635
636		-
637	637	(((
638	638	**Package Includes**:
639	639	)))
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650	650	Device Size: 69.2 x 29.2 x 14.8 mm
651	651
652	652
653		-
654	654
655	655	)))
656	656
657	657	= 10. Support =
658	658
659		-
660	660	* 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.
661	661	* 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]].
662	662
663		-
664		-
665	665