Last modified by Xiaoling on 2025/04/24 10:00
<
From version < 4.1 >
edited by Edwin Chen
on 2023/04/09 00:18
To version < 6.1 >
edited by Edwin Chen
on 2023/04/09 00:33
>
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -140,12 +140,9 @@
140 140  
141 141  
142 142  
143 -(% style="color:red" %)**Note: LHT65N-E5 use same payload decoder as LHT65.**
143 +(% style="color:red" %)**Note: LHT65N-PIR use same payload decoder as LHT65.**
144 144  
145 145  
146 -[[image:image-20220522233026-6.png||_mstalt="429403"]]
147 -
148 -
149 149  Input APP EUI,  APP KEY and DEV EUI:
150 150  
151 151  
... ... @@ -152,9 +152,9 @@
152 152  [[image:image-20220522233118-7.png||_mstalt="430430"]]
153 153  
154 154  
155 -=== 2.3.2 Step 2: Activate LHT65N-E5 by pressing the ACT button for more than 5 seconds. ===
152 +=== 2.3.2 Step 2: Activate LHT65N-PIR by pressing the ACT button for more than 5 seconds. ===
156 156  
157 -Use ACT button to activate LHT65N-E5 and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
154 +Use ACT button to activate LHT65N-PIR and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
158 158  [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
159 159  
160 160  
... ... @@ -196,17 +196,17 @@
196 196  [[Ext value>>||anchor="H2.4.6Extvalue"]]
197 197  )))
198 198  
199 -* The First 6 bytes: has fix meanings for every LHT65N-E5.
200 -* The 7th byte (EXT #): defines the external sensor model. It can be 0x05 or 0x09 for LHT65N-E5
201 -* The 8^^th^^ ~~ 9^^th^^ byte: Illuminance. Range: 0-65535 lx.
202 -* The 10th ~~ 11th byte: Reserve, always 0xFFFF
196 +* The First 6 bytes: has fix meanings for every LHT65N-PIR.
197 +* The 7th byte (EXT #): defines the external sensor model. It can be (% class="mark" %)0x05 or 0x09(%%) for LHT65N-PIR
198 +* The 7^^th^^ byte: Alarm Bit (if this uplink is from periodically or movement)
199 +* The 8^^th^^ ~~ 11st  byte: Movement Detect Count.
203 203  
204 204  === 2.4.1 Decoder in TTN V3 ===
205 205  
206 206  
207 -When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N-E5 decoder in TTNv3 for friendly reading.
204 +When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N-PIR decoder in TTNv3 for friendly reading.
208 208  
209 -Below is the position to put the decoder and LHT65N-E5 decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
206 +Below is the position to put the decoder and LHT65N-PIR decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
210 210  
211 211  
212 212  [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
... ... @@ -223,11 +223,12 @@
223 223  [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
224 224  
225 225  
226 -Check the battery voltage for LHT65N-E5.
223 +Check the battery voltage for LHT65N-PIR.
227 227  
228 -* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
225 +* BAT status=(0xcba4>>14)&0xFF=11(B)，very good
229 229  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
230 230  
228 +
231 231  === 2.4.3 Built-in Temperature ===
232 232  
233 233  
... ... @@ -265,71 +265,6 @@
265 265   The last 2 bytes of data are meaningless
266 266  
267 267  
268 -
269 -==== 2.4.5.2 Ext~=0x85, E5 sensor with Unix Timestamp ====
270 -
271 -
272 -(((
273 -Timestamp mode is designed for LHT65N-E5 with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
274 -)))
275 -
276 -(((
277 -
278 -)))
279 -
280 -(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:535px" %)
281 -|=(% style="width: 88px;" %)(((
282 -**Size(bytes)**
283 -)))|=(% style="width: 93px;" %)(((
284 -**2**
285 -)))|=(% style="width: 94px;" %)(((
286 -**2**
287 -)))|=(% style="width: 117px;" %)(((
288 -**2**
289 -)))|=(% style="width: 54px;" %)(((
290 -**1**
291 -)))|=(% style="width: 79px;" %)(((
292 -**4**
293 -)))
294 -|(% style="width:88px" %)(((
295 -**Value**
296 -)))|(% style="width:93px" %)(((
297 -[[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
298 -)))|(% style="width:94px" %)(((
299 -[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
300 -)))|(% style="width:117px" %)(((
301 -BAT Status &
302 -Illumination
303 -)))|(% style="width:54px" %)(((
304 -Status & Ext
305 -)))|(% style="width:79px" %)(((
306 -[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
307 -)))
308 -
309 -* **Battery status & Built-in Humidity**
310 -
311 -(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
312 -|=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
313 -|(% style="width:67px" %)Value|(% style="width:256px" %)(((
314 -BAT Status
315 -00(b): Ultra Low ( BAT <= 2.50v)
316 -01(b): Low  (2.50v <=BAT <= 2.55v)
317 -10(b): OK   (2.55v <= BAT <=2.65v)
318 -11(b): Good   (BAT >= 2.65v)
319 -)))|(% style="width:132px" %)(((
320 -Illumination
321 -)))
322 -
323 -* **Status & Ext Byte**
324 -
325 -(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
326 -|=(% scope="row" style="width: 60px;" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
327 -|=(% style="width: 96px;" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
328 -
329 -* (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
330 -* (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N-E5 will set this bit to 0 until got the time stamp from the application server.
331 -* (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N-E5 will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
332 -
333 333  == 2.5 Show data on Datacake ==
334 334  
335 335  
... ... @@ -375,239 +375,11 @@
375 375  [[image:image-20221224161957-6.png||height="306" width="852"]]
376 376  
377 377  
378 -== 2.6 Datalog Feature ==
379 379  
380 -
381 -(((
382 -Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N-E5 will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N-E5.
383 -)))
384 -
385 -
386 -=== 2.6.1 Ways to get datalog via LoRaWAN ===
387 -
388 -
389 -There are two methods:
390 -
391 -(% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
392 -
393 -
394 -(% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N-E5 will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N-E5 will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
395 -
396 -
397 -(% style="color:red" %)**Note for method 2:**
398 -
399 -* a) LHT65N-E5 will do an ACK check for data records sending to make sure every data arrive server.
400 -* b) LHT65N-E5 will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N-E5 won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N-E5 gets a ACK, LHT65N-E5 will consider there is a network connection and resend all NONE-ACK Message.
401 -
402 -Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
403 -
404 -
405 -[[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
406 -
407 -
408 -=== 2.6.2 Unix TimeStamp ===
409 -
410 -
411 -LHT65N-E5 uses Unix TimeStamp format based on
412 -
413 -
414 -[[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
415 -
416 -
417 -
418 -User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
419 -
420 -Below is the converter example
421 -
422 -[[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
423 -
424 -
425 -So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
426 -
427 -
428 -=== 2.6.3 Set Device Time ===
429 -
430 -
431 -(((
432 -(% style="color:blue" %)**There are two ways to set device's time:**
433 -)))
434 -
435 -(((
436 -**1.  Through LoRaWAN MAC Command (Default settings)**
437 -)))
438 -
439 -(((
440 -User need to set SYNCMOD=1 to enable sync time via MAC command.
441 -)))
442 -
443 -(((
444 -Once LHT65N-E5 Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N-E5. If LHT65N-E5 fails to get the time from the server, LHT65N-E5 will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
445 -)))
446 -
447 -(((
448 -(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
449 -)))
450 -
451 -
452 -(((
453 -**2. Manually Set Time**
454 -)))
455 -
456 -(((
457 -User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
458 -)))
459 -
460 -
461 -=== 2.6.4 Poll sensor value ===
462 -
463 -
464 -User can poll sensor value based on timestamps from the server. Below is the downlink command.
465 -
466 -[[image:image-20220523152302-15.png||_mstalt="451581"]]
467 -
468 -
469 -Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
470 -
471 -For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
472 -
473 -Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
474 -
475 -Uplink Internal =5s，means LHT65N-E5 will send one packet every 5s. range 5~~255s.
476 -
477 -
478 -=== 2.6.5 Datalog Uplink payload ===
479 -
480 -
481 -The Datalog poll reply uplink will use below payload format.
482 -
483 -**Retrieval data payload:**
484 -
485 -(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
486 -|=(% style="width: 60px;" %)(((
487 -**Size(bytes)**
488 -)))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
489 -|(% style="width:97px" %)**Value**|(% style="width:123px" %)[[External sensor data>>||anchor="H2.4.6Extvalue"]]|(% style="width:108px" %)[[Built In Temperature>>||anchor="H2.4.3Built-inTemperature"]]|(% style="width:133px" %)[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]|(% style="width:159px" %)Poll message flag & Ext|(% style="width:80px" %)[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
490 -
491 -**Poll message flag & Ext:**
492 -
493 -[[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
494 -
495 -(% style="color:blue" %)**No ACK Message**(%%):  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
496 -
497 -(% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
498 -
499 -* Poll Message Flag is set to 1.
500 -
501 -* Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
502 -
503 -For example, in US915 band, the max payload for different DR is:
504 -
505 -(% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
506 -
507 -(% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
508 -
509 -(% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
510 -
511 -(% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
512 -
513 -If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
514 -
515 -
516 -**Example:**
517 -
518 -If LHT65N-E5 has below data inside Flash:
519 -
520 -[[image:image-20220523144455-1.png||_mstalt="430040" height="335" width="735"]]
521 -
522 -
523 -If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
524 -
525 -Where : Start time: 60065F97 = time 21/1/19 04:27:03
526 -
527 - Stop time: 60066DA7= time 21/1/19 05:27:03
528 -
529 -
530 -**LHT65N-E5 will uplink this payload.**
531 -
532 -[[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
533 -
534 -
535 -__**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
536 -
537 -Where the first 11 bytes is for the first entry:
538 -
539 -7FFF089801464160065F97
540 -
541 -Ext sensor data=0x7FFF/100=327.67
542 -
543 -Temp=0x088E/100=22.00
544 -
545 -Hum=0x014B/10=32.6
546 -
547 -poll message flag & Ext=0x41,means reply data,Ext=1
548 -
549 -Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
550 -
551 -
552 -== 2.7 Alarm Mode ==
553 -
554 -(((
555 -
556 -
557 -when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.
558 -)))
559 -
560 -(((
561 -(% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
562 -
563 -
564 -)))
565 -
566 -=== 2.7.1 ALARM MODE ===
567 -
568 -
569 -(% class="box infomessage" %)
570 -(((
571 -(((
572 -**AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
573 -)))
574 -
575 -(((
576 -**AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
577 -)))
578 -
579 -(((
580 -**AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
581 -)))
582 -
583 -(((
584 -(% _mstmutation="1" %)**AT+ARTEMP=？ **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
585 -)))
586 -
587 -(((
588 -**AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
589 -)))
590 -)))
591 -
592 -(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
593 -
594 -Total bytes: 8 bytes
595 -
596 -**Example:**AA0100010001003C
597 -
598 -WMOD=01
599 -
600 -CITEMP=0001
601 -
602 -TEMPlow=0001
603 -
604 -TEMPhigh=003C
605 -
606 -
607 607  == 2.8 LED Indicator ==
608 608  
609 609  
610 -The LHT65 has a triple color LED which for easy showing different stage .
315 +The LHT65N-PIR has a triple color LED which for easy showing different stage .
611 611  
612 612  While user press ACT button, the LED will work as per LED status with ACT button.
613 613  
... ... @@ -618,6 +618,7 @@
618 618  * RED LED when external sensor is not connected
619 619  * For each success downlink, the PURPLE LED will blink once
620 620  
326 +
621 621  == 2.9 installation ==
622 622  
623 623  
... ... @@ -638,19 +638,13 @@
638 638  Use for AT Command
639 639  )))
640 640  * (((
641 -Update firmware for LHT65N-E5
347 +Update firmware for LHT65N-PIR
642 642  )))
643 -* (((
644 -Exposed All pins from the LHT65N Type-C connector.
645 645  
646 -
647 -
648 -)))
649 -
650 650  [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
651 651  
652 652  
653 -= 4. Configure LHT65N-E5 via AT command or LoRaWAN downlink =
353 += 4. Configure LHT65N-PIR via AT command or LoRaWAN downlink =
654 654  
655 655  
656 656  (((
... ... @@ -761,127 +761,8 @@
761 761  
762 762  * There is no downlink command to set to Sleep mode.
763 763  
764 -== 4.4 Set system time ==
765 -
766 -
767 -Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
768 -
769 -
770 -(% style="color:#4f81bd" %)**AT Command:**
771 -
772 -[[image:image-20220523151253-8.png||_mstalt="430677"]]
773 -
774 -
775 -(% style="color:#4f81bd" %)**Downlink Command:**
776 -
777 -0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
778 -
779 -
780 -== 4.5 Set Time Sync Mode ==
781 -
782 -
783 -(((
784 -Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
785 -)))
786 -
787 -(((
788 -SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
789 -
790 790  
791 -)))
792 792  
793 -(% style="color:#4f81bd" %)**AT Command:**
794 -
795 -[[image:image-20220523151336-9.png||_mstalt="431717"]]
796 -
797 -
798 -(% style="color:#4f81bd" %)**Downlink Command:**
799 -
800 -0x28 01  ~/~/  Same As AT+SYNCMOD=1
801 -0x28 00  ~/~/  Same As AT+SYNCMOD=0
802 -
803 -
804 -== 4.6 Set Time Sync Interval ==
805 -
806 -
807 -Feature: Define System time sync interval. SYNCTDC default value: 10 days.
808 -
809 -
810 -(% style="color:#4f81bd" %)**AT Command:**
811 -
812 -[[image:image-20220523151411-10.png||_mstalt="449696"]]
813 -
814 -
815 -(% style="color:#4f81bd" %)**Downlink Command:**
816 -
817 -**0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
818 -
819 -
820 -== 4.7 Print data entries base on page. ==
821 -
822 -
823 -Feature: Print the sector data from start page to stop page (max is 416 pages).
824 -
825 -
826 -(% style="color:#4f81bd" %)**AT Command: AT+PDTA**
827 -
828 -[[image:image-20220523151450-11.png||_mstalt="451035"]]
829 -
830 -
831 -(% style="color:#4f81bd" %)**Downlink Command:**
832 -
833 -No downlink commands for feature
834 -
835 -
836 -== 4.8 Print last few data entries. ==
837 -
838 -
839 -Feature: Print the last few data entries
840 -
841 -
842 -(% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
843 -
844 -[[image:image-20220523151524-12.png||_mstalt="452101"]]
845 -
846 -
847 -(% style="color:#4f81bd" %)**Downlink Command:**
848 -
849 -No downlink commands for feature
850 -
851 -
852 -== 4.9 Clear Flash Record ==
853 -
854 -
855 -Feature: Clear flash storage for data log feature.
856 -
857 -
858 -(% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
859 -
860 -[[image:image-20220523151556-13.png||_mstalt="454129"]]
861 -
862 -
863 -(% style="color:#4f81bd" %)**Downlink Command: 0xA3**
864 -
865 -* Example: 0xA301  ~/~/  Same as AT+CLRDTA
866 -
867 -== 4.10 Auto Send None-ACK messages ==
868 -
869 -
870 -Feature: LHT65N-E5 will wait for ACK for each uplink, If LHT65N-E5 doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N-E5 keeps sending messages in normal periodically. Once LHT65N-E5 gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
871 -
872 -
873 -(% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
874 -
875 -The default factory setting is 0
876 -
877 -(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
878 -|=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
879 -|(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
880 -
881 -(% style="color:#4f81bd" %)**Downlink Command: 0x34**
882 -
883 -* Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
884 -
885 885  = 5. Battery & How to replace =
886 886  
887 887  == 5.1 Battery Type ==

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