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Last modified by Xiaoling on 2023/07/18 10:12
From version 210.1
edited by Bei Jinggeng
on 2022/10/18 10:49
Change comment: There is no comment for this version
To version 210.4
edited by Xiaoling
on 2022/10/26 15:57
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
... ... @@ -196,7 +196,6 @@
196 196  
197 197  
198 198  
199 -
200 200  == 2.4 Uplink Payload   ( Fport~=2) ==
201 201  
202 202  
... ... @@ -208,69 +208,37 @@
208 208  After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
209 209  )))
210 210  
211 -(% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
212 -(% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
213 -(((
214 -(% _mstvisible="6" %)
215 -(% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
216 -)))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
217 -(((
218 -(% _mstvisible="6" %)
219 -(% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
220 -)))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
221 -(((
222 -(% _mstvisible="6" %)
223 -(% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
224 -)))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
225 -(((
226 -(% _mstvisible="6" %)
227 -(% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
228 -)))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
229 -(((
230 -(% _mstvisible="6" %)
231 -(% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
232 -)))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
233 -(((
234 -(% _mstvisible="6" %)
235 -(% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
210 +(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
211 +|=(% style="width: 60px;" %)(((
212 +**Size(bytes)**
213 +)))|=(% style="width: 30px;" %)(((
214 +**2**
215 +)))|=(% style="width: 100px;" %)(((
216 +**2**
217 +)))|=(% style="width: 100px;" %)(((
218 +**2**
219 +)))|=(% style="width: 50px;" %)(((
220 +**1**
221 +)))|=(% style="width: 50px;" %)(((
222 +**4**
236 236  )))
237 -(% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
224 +|(% style="width:97px" %)(((
225 +**Value**
226 +)))|(% style="width:39px" %)(((
227 +[[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
228 +)))|(% style="width:100px" %)(((
238 238  (((
239 -(% _mstvisible="6" %)
240 -(% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
241 -)))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
242 -(((
243 -(% _mstvisible="6" %)
244 -[[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
245 -)))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
246 -(((
247 -(% _mstvisible="6" %)
248 -(((
249 -(% _mstvisible="7" %)
250 -[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
230 +[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
251 251  )))
252 -)))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
232 +)))|(% style="width:77px" %)(((
253 253  (((
254 -(% _mstvisible="6" %)
255 -(((
256 -(% _mstvisible="7" %)
257 -[[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
234 +[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
258 258  )))
259 -
260 -(% _mstvisible="6" %)
261 -(((
262 -(% _mstvisible="7" %)
263 -[[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
236 +)))|(% style="width:47px" %)(((
237 +[[Ext>>||anchor="H2.4.5Ext23"]] #
238 +)))|(% style="width:51px" %)(((
239 +[[Ext value>>||anchor="H2.4.6Extvalue"]]
264 264  )))
265 -)))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
266 -(((
267 -(% _mstvisible="6" %)
268 -[[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
269 -)))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
270 -(((
271 -(% _mstvisible="6" %)
272 -[[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
273 -)))
274 274  
275 275  * The First 6 bytes: has fix meanings for every LHT65N.
276 276  * The 7th byte (EXT #): defines the external sensor model.
... ... @@ -288,7 +288,6 @@
288 288  
289 289  
290 290  
291 -
292 292  === 2.4.2 BAT-Battery Info ===
293 293  
294 294  
... ... @@ -367,112 +367,59 @@
367 367  
368 368  )))
369 369  
370 -(% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
371 -(% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
372 -(((
373 -(% _mstvisible="6" %)
374 -(% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
375 -)))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
376 -(((
377 -(% _mstvisible="6" %)
378 -(% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
336 +(% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:510px" %)
337 +|=(% style="width: 50px;" %)(((
338 +**Size(bytes)**
339 +)))|=(% _mstvisible="4" style="width: 71px;" %)(((
340 +**2**
379 379  )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
380 380  (((
381 -(% _mstvisible="6" %)
382 -(% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
343 +**2**
383 383  )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
384 384  (((
385 -(% _mstvisible="6" %)
386 -(% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
346 +**2**
387 387  )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
388 388  (((
389 -(% _mstvisible="6" %)
390 -(% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
349 +**1**
391 391  )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
392 392  (((
393 -(% _mstvisible="6" %)
394 -(% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
352 +**4**
395 395  )))
396 -(% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
354 +|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
397 397  (((
398 -(% _mstvisible="6" %)
399 -(% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
356 +**Value**
400 400  )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
401 401  (((
402 -(% _mstvisible="6" %)
403 -[[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
404 -)))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
359 +[[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
360 +)))|(% _mstvisible="4" style="width:99px" %)(((
361 +[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
362 +)))|(% style="width:132px" %)(% _mstvisible="5" %)
405 405  (((
406 -(% _mstvisible="6" %)
407 -(((
408 -(% _mstvisible="7" %)
409 -[[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
410 -)))
411 -
412 -(% _mstvisible="6" %)
413 -(((
414 -(% _mstvisible="7" %)
415 -[[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
416 -)))
417 -)))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
418 -(((
419 -(% _mstvisible="6" %)
420 -(((
421 -(% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
422 -BAT Status &
423 -)))
424 -
425 -(% _mstvisible="6" %)
426 -(((
427 -(% _mstvisible="7" %)
428 -[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
429 -)))
430 -)))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
431 -(((
432 -(% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
364 +BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
365 +)))|(% _mstvisible="4" style="width:54px" %)(((
433 433  Status & Ext
434 -)))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
435 -(((
436 -(% _mstvisible="6" %)
437 -(((
438 -(% _mstvisible="7" %)
439 -[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
367 +)))|(% _mstvisible="4" style="width:64px" %)(((
368 +[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
440 440  )))
441 -)))
442 442  
443 -(% _mstvisible="1" %)
444 -* (% _msthash="2539669" _msttexthash="857922" _mstvisible="3" %)**Battery status & **(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**
445 445  
446 -(% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
447 -(% _mstvisible="3" %)|=(% _msthash="1230918" _msttexthash="93158" _mstvisible="4" style="width: 65px;" %)Bit(bit)|=(% _msthash="1230919" _msttexthash="57954" _mstvisible="4" style="width: 267px;" %)[15:14]|=(% _msthash="1230920" _msttexthash="48022" _mstvisible="4" style="width: 134px;" %)[11:0]
448 -(% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
449 -(((
450 -(% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
451 -BAT Status
372 +* **Battery status & Built-in Humidity**
452 452  
453 -(% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
374 +(% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
375 +|=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
376 +|(% style="width:67px" %)Value|(% style="width:256px" %)(((
377 +BAT Status
454 454  00(b): Ultra Low ( BAT <= 2.50v)
455 -
456 -(% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
457 457  01(b): Low  (2.50v <=BAT <= 2.55v)
458 -
459 -(% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
460 460  10(b): OK   (2.55v <= BAT <=2.65v)
461 -
462 -(% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
463 463  11(b): Good   (BAT >= 2.65v)
464 -)))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
465 -(((
466 -(% _mstvisible="6" %)
467 -[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
468 -
469 -(% _mstvisible="6" %)
470 -
382 +)))|(% style="width:132px" %)(((
383 +[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
471 471  )))
472 472  
473 -* (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
386 +* **Status & Ext Byte**
474 474  
475 -(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
388 +(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
476 476  |(% 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]**
477 477  |(% 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)
478 478  
... ... @@ -487,11 +487,11 @@
487 487  
488 488  be used to power the external ADC sensor; user can control the power on time for this
489 489  
490 -sensor by setting:
403 +(% style="color:blue" %)**sensor by setting:**
491 491  
492 -AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
405 +**AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
493 493  
494 -For example:
407 +**For example:**
495 495  
496 496  AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
497 497  
... ... @@ -535,7 +535,7 @@
535 535  [[image:image-20220927095645-1.png||height="534" width="460"]]
536 536  
537 537  
538 -**Ext=2,Temperature Sensor(TMP117)：**
451 +(% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
539 539  
540 540  [[image:image-20220906102307-7.png]]
541 541  
... ... @@ -546,7 +546,6 @@
546 546  
547 547  
548 548  
549 -
550 550  ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
551 551  
552 552  
... ... @@ -555,7 +555,7 @@
555 555  
556 556  (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
557 557  
558 -**Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
470 +(% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
559 559  
560 560   In Open State, the power consumption is the same as if there is no probe
561 561  
... ... @@ -566,7 +566,7 @@
566 566  
567 567  Ext=4,Interrupt Sensor：
568 568  
569 -(% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
481 +(% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
570 570  |(% style="width:117px" %)(((
571 571  AT+EXT=4,1
572 572  )))|(% style="width:371px" %)(((
... ... @@ -610,6 +610,7 @@
610 610  
611 611  [[image:image-20220906101320-5.png||height="353" width="696"]]
612 612  
525 +
613 613  Ext=8, Counting Sensor ( 4 bytes)：
614 614  
615 615  (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
... ... @@ -646,7 +646,6 @@
646 646  
647 647  
648 648  
649 -
650 650  == 2.5 Show data on Datacake ==
651 651  
652 652  
... ... @@ -709,12 +709,12 @@
709 709  
710 710  There are two methods:
711 711  
712 -**Method 1**: IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
624 +(% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
713 713  
714 714  
715 -**Method 2: **Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N 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.
627 +(% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N 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.
716 716  
717 -**Note for method 2:**
629 +(% style="color:red" %)**Note for method 2:**
718 718  
719 719  * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
720 720  * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N 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 gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
... ... @@ -749,11 +749,11 @@
749 749  
750 750  
751 751  (((
752 -There are two ways to set device's time:
664 +(% style="color:blue" %)**There are two ways to set device's time:**
753 753  )))
754 754  
755 755  (((
756 -**~1. Through LoRaWAN MAC Command (Default settings)**
668 +**1.  Through LoRaWAN MAC Command (Default settings)**
757 757  )))
758 758  
759 759  (((
... ... @@ -1148,8 +1148,11 @@
1148 1148  (((
1149 1149  (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1150 1150  
1151 -=== **2.7.1 ALARM MODE ( Since v1.3.1 firmware)** ===
1152 1152  
1064 +
1065 +=== 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
1066 +
1067 +
1153 1153  (((
1154 1154  (% class="box infomessage" %)
1155 1155  (((
... ... @@ -1172,7 +1172,9 @@
1172 1172  )))
1173 1173  
1174 1174  (((
1175 -=== **2.7.2 ALARM MODE ( Before v1.3.1 firmware)** ===
1090 +=== 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1091 +
1092 +
1176 1176  )))
1177 1177  
1178 1178  (% _mstvisible="1" class="box infomessage" %)
... ... @@ -1348,11 +1348,11 @@
1348 1348  
1349 1349  Format: Command Code (0x01) followed by 3 bytes time value.
1350 1350  
1351 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1268 +If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1352 1352  
1353 -* **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1270 +* **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1354 1354  
1355 -* **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1272 +* **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1356 1356  
1357 1357  == 4.2 Set External Sensor Mode ==
1358 1358  
... ... @@ -1471,7 +1471,7 @@
1471 1471  
1472 1472  (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1473 1473  
1474 -0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1391 +0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1475 1475  
1476 1476  
1477 1477  
... ... @@ -1513,7 +1513,7 @@
1513 1513  
1514 1514  (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1515 1515  
1516 -**0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1433 +**0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1517 1517  
1518 1518  
1519 1519  
... ... @@ -1564,7 +1564,7 @@
1564 1564  
1565 1565  (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1566 1566  
1567 -* Example: 0xA301  ~/~/  Same as AT+CLRDTA
1484 +* Example: 0xA301  ~/~/  Same as AT+CLRDTA
1568 1568  
1569 1569  == 4.13 Auto Send None-ACK messages ==
1570 1570  
... ... @@ -1584,7 +1584,7 @@
1584 1584  
1585 1585  (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1586 1586  
1587 -* Example: 0x3401 ~/~/  Same as AT+PNACKMD=1
1504 +* Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1588 1588  
1589 1589  == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1590 1590  
... ... @@ -1635,6 +1635,8 @@
1635 1635  
1636 1636  0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
1637 1637  
1555 +
1556 +
1638 1638  = 5. Battery & How to replace =
1639 1639  
1640 1640