Last modified by Mengting Qiu on 2024/04/30 14:27
<
From version < 120.11 >
edited by Xiaoling
on 2022/06/09 18:30
To version < 119.15 >
edited by Xiaoling
on 2022/06/09 18:17
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -77,6 +77,7 @@
77 77  * Tri-color LED to indicate working status
78 78  * Datalog feature
79 79  
80 +
80 80  (% _mstvisible="1" %)
81 81  == (% _msthash="323570" _msttexthash="297635" _mstvisible="3" %)1.3 Specification(%%) ==
82 82  
... ... @@ -363,6 +363,8 @@
363 363  * The 7th byte (EXT #): defines the external sensor model.
364 364  * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
365 365  
367 +
368 +
366 366  (% _mstvisible="1" %)
367 367  === (% _msthash="360269" _msttexthash="333762" _mstvisible="3" %)2.4.1 Decoder in TTN V3(%%) ===
368 368  
... ... @@ -399,6 +399,8 @@
399 399  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
400 400  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
401 401  
405 +
406 +
402 402  (% _mstvisible="1" %)
403 403  === (% _msthash="600769" _msttexthash="565838" _mstvisible="3" %)2.4.3 Built-in Temperature(%%) ===
404 404  
... ... @@ -414,6 +414,8 @@
414 414  (% _mstvisible="1" %)
415 415  * Temperature:  (0xF5C6-65536)/100=-26.18℃
416 416  
422 +
423 +
417 417  (% _mstvisible="1" %)
418 418  === (% _msthash="475891" _msttexthash="445120" _mstvisible="3" %)2.4.4 Built-in Humidity(%%) ===
419 419  
... ... @@ -424,8 +424,6 @@
424 424  * Humidity:    0x025C/10=60.4%
425 425  
426 426  
427 -
428 -
429 429  (% _mstvisible="1" %)
430 430  === (% _msthash="116532" _msttexthash="87958" _mstvisible="3" %)2.4.5 Ext #(%%) ===
431 431  
... ... @@ -596,7 +596,6 @@
596 596  * Unix Time Request:1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
597 597  
598 598  
599 -
600 600  (% _mstvisible="1" %)
601 601  == (% _msthash="487097" _msttexthash="454818" _mstvisible="3" %)2.5 Show data on Datacake(%%) ==
602 602  
... ... @@ -660,7 +660,6 @@
660 660  1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
661 661  
662 662  
663 -
664 664  (% _mstvisible="1" %)
665 665  === (% _msthash="369915" _msttexthash="342797" _mstvisible="3" %)2.6.2 Unix TimeStamp(%%) ===
666 666  
... ... @@ -914,6 +914,7 @@
914 914  )))
915 915  )))
916 916  
920 +
917 917  (% _mstvisible="1" %)
918 918  (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
919 919  
... ... @@ -1139,6 +1139,8 @@
1139 1139  )))
1140 1140  
1141 1141  
1146 +
1147 +
1142 1142  (% _mstvisible="1" style="text-align: left;" %)
1143 1143  == (% _msthash="112034" _msttexthash="277511" _mstvisible="3" %)2.9 installation(%%) ==
1144 1144  
... ... @@ -1260,7 +1260,7 @@
1260 1260  Feature: Change LoRaWAN End Node Transmit Interval.
1261 1261  
1262 1262  (% _mstvisible="1" style="text-align: left;" %)
1263 -(% style="color:#4f81bd" %)**AT Command: AT+TDC**
1269 +(% _msthash="315356" _msttexthash="241696" _mstvisible="3" %)**AT Command: AT+TDC**
1264 1264  
1265 1265  (% _mstvisible="1" %)
1266 1266  [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
... ... @@ -1271,7 +1271,7 @@
1271 1271  
1272 1272  
1273 1273  (% _mstvisible="2" style="text-align: left;" %)
1274 -(% style="color:#4f81bd" %)**Downlink Command: 0x01**
1280 +(% _msthash="506255" _msttexthash="381992" _mstvisible="4" %)**Downlink Command: 0x01**
1275 1275  )))
1276 1276  
1277 1277  (% _mstvisible="1" %)
... ... @@ -1309,7 +1309,7 @@
1309 1309  Feature: Change External Sensor Mode.
1310 1310  
1311 1311  (% _mstvisible="1" style="text-align: left;" %)
1312 -(% style="color:#4f81bd" %)**AT Command: AT+EXT**
1318 +(% _msthash="315358" _msttexthash="248118" _mstvisible="3" %)**AT Command: AT+EXT**
1313 1313  
1314 1314  (% _mstvisible="1" %)
1315 1315  [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
... ... @@ -1320,7 +1320,7 @@
1320 1320  
1321 1321  
1322 1322  (% _mstvisible="2" style="text-align: left;" %)
1323 -(% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1329 +(% _msthash="506258" _msttexthash="387855" _mstvisible="4" %)**Downlink Command: 0xA2**
1324 1324  )))
1325 1325  
1326 1326  (% _mstvisible="1" %)
... ... @@ -1370,14 +1370,13 @@
1370 1370  PID is default set to disable (0)
1371 1371  
1372 1372  (% _mstvisible="1" style="text-align: left;" %)
1373 -(% style="color:#4f81bd" %)**AT Command:**
1379 +(% _msthash="315361" _msttexthash="137488" _mstvisible="3" %)**AT Command:**
1374 1374  
1375 1375  (% _mstvisible="1" %)
1376 1376  [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1377 1377  
1378 -
1379 1379  (% _mstvisible="1" style="text-align: left;" %)
1380 -(% style="color:#4f81bd" %)**Downlink Command:**
1385 +(% _msthash="315362" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1381 1381  
1382 1382  (% _mstvisible="1" %)
1383 1383  * 0xA800  **~-~->** AT+PID=0
... ... @@ -1392,7 +1392,7 @@
1392 1392  Feature: Set device password, max 9 digits
1393 1393  
1394 1394  (% _mstvisible="1" style="text-align: left;" %)
1395 -(% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1400 +(% _msthash="315364" _msttexthash="295009" _mstvisible="3" %)**AT Command: AT+PWORD**
1396 1396  
1397 1397  (% _mstvisible="1" %)
1398 1398  [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
... ... @@ -1403,7 +1403,7 @@
1403 1403  
1404 1404  
1405 1405  (% _mstvisible="2" style="text-align: left;" %)
1406 -(% style="color:#4f81bd" %)**Downlink Command:**
1411 +(% _msthash="506261" _msttexthash="298038" _mstvisible="4" %)**Downlink Command:**
1407 1407  )))
1408 1408  
1409 1409  (% _mstvisible="1" %)
... ... @@ -1422,7 +1422,7 @@
1422 1422  Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1423 1423  
1424 1424  (% _mstvisible="1" style="text-align: left;" %)
1425 -(% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1430 +(% _msthash="315366" _msttexthash="289120" _mstvisible="3" %)**AT Command: AT+DISAT**
1426 1426  
1427 1427  (% _mstvisible="1" %)
1428 1428  [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
... ... @@ -1429,7 +1429,7 @@
1429 1429  
1430 1430  
1431 1431  (% _mstvisible="1" style="text-align: left;" %)
1432 -(% style="color:#4f81bd" %)**Downlink Command:**
1437 +(% _msthash="315367" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1433 1433  
1434 1434  (% _msthash="315368" _msttexthash="974311" _mstvisible="1" style="text-align: left;" %)
1435 1435  No downlink command for this feature.
... ... @@ -1442,7 +1442,7 @@
1442 1442  Feature: Set device to sleep mode
1443 1443  
1444 1444  (% _mstvisible="1" style="text-align: left;" %)
1445 -(% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1450 +(% _msthash="315370" _msttexthash="289783" _mstvisible="3" %)**AT Command: AT+SLEEP**
1446 1446  
1447 1447  (% _mstvisible="1" %)
1448 1448  [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
... ... @@ -1449,7 +1449,7 @@
1449 1449  
1450 1450  
1451 1451  (% _mstvisible="1" %)
1452 -(% style="color:#4f81bd" %)**Downlink Command:**
1457 +(% _msthash="315371" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1453 1453  
1454 1454  (% _mstvisible="1" %)
1455 1455  * There is no downlink command to set to Sleep mode.
... ... @@ -1463,7 +1463,7 @@
1463 1463  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1464 1464  
1465 1465  (% _mstvisible="1" %)
1466 -(% style="color:#4f81bd" %)**AT Command:**
1471 +(% _msthash="315373" _msttexthash="137488" _mstvisible="3" %)**AT Command:**
1467 1467  
1468 1468  (% _mstvisible="1" %)
1469 1469  [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
... ... @@ -1470,7 +1470,7 @@
1470 1470  
1471 1471  
1472 1472  (% _mstvisible="1" %)
1473 -(% style="color:#4f81bd" %)**Downlink Command:**
1478 +(% _msthash="315374" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1474 1474  
1475 1475  (% _msthash="315375" _msttexthash="2898571" _mstvisible="1" %)
1476 1476  0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
... ... @@ -1494,15 +1494,14 @@
1494 1494  (% _mstvisible="1" %)
1495 1495  (((
1496 1496  (% _mstvisible="2" %)
1497 -(% style="color:#4f81bd" %)**AT Command:**
1502 +(% _msthash="506265" _msttexthash="137488" _mstvisible="4" %)**AT Command:**
1498 1498  )))
1499 1499  
1500 1500  (% _mstvisible="1" %)
1501 1501  [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1502 1502  
1503 -
1504 1504  (% _mstvisible="1" %)
1505 -(% style="color:#4f81bd" %)**Downlink Command:**
1509 +(% _msthash="315376" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1506 1506  
1507 1507  (% _msthash="315377" _msttexthash="479648" _mstvisible="1" %)
1508 1508  0x28 01 ~/~/ Same As AT+SYNCMOD=1
... ... @@ -1510,7 +1510,6 @@
1510 1510  (% _msthash="315378" _msttexthash="479076" _mstvisible="1" %)
1511 1511  0x28 00 ~/~/ Same As AT+SYNCMOD=0
1512 1512  
1513 -
1514 1514  (% _mstvisible="1" %)
1515 1515  == (% _msthash="536432" _msttexthash="502528" _mstvisible="3" %)4.9 Set Time Sync Interval(%%) ==
1516 1516  
... ... @@ -1518,19 +1518,17 @@
1518 1518  Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1519 1519  
1520 1520  (% _mstvisible="1" %)
1521 -(% style="color:#4f81bd" %)**AT Command:**
1524 +(% _msthash="315380" _msttexthash="137488" _mstvisible="3" %)**AT Command:**
1522 1522  
1523 1523  (% _mstvisible="1" %)
1524 1524  [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1525 1525  
1526 -
1527 1527  (% _mstvisible="1" %)
1528 -(% style="color:#4f81bd" %)**Downlink Command:**
1530 +(% _msthash="315381" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1529 1529  
1530 1530  (% _msthash="315382" _msttexthash="590044" _mstvisible="1" %)
1531 1531  0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
1532 1532  
1533 -
1534 1534  (% _mstvisible="1" %)
1535 1535  == (% _msthash="927901" _msttexthash="882570" _mstvisible="3" %)4.10 Print data entries base on page.(%%) ==
1536 1536  
... ... @@ -1538,19 +1538,17 @@
1538 1538  Feature: Print the sector data from start page to stop page (max is 416 pages).
1539 1539  
1540 1540  (% _mstvisible="1" %)
1541 -(% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1542 +(% _msthash="315384" _msttexthash="264953" _mstvisible="3" %)**AT Command: AT+PDTA**
1542 1542  
1543 1543  (% _mstvisible="1" %)
1544 1544  [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1545 1545  
1546 -
1547 1547  (% _mstvisible="1" %)
1548 -(% style="color:#4f81bd" %)**Downlink Command:**
1548 +(% _msthash="315385" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1549 1549  
1550 1550  (% _msthash="315386" _msttexthash="799539" _mstvisible="1" %)
1551 1551  No downlink commands for feature
1552 1552  
1553 -
1554 1554  (% _mstvisible="1" %)
1555 1555  == (% _msthash="788762" _msttexthash="747149" _mstvisible="3" %)4.11 Print last few data entries.(%%) ==
1556 1556  
... ... @@ -1558,19 +1558,17 @@
1558 1558  Feature: Print the last few data entries
1559 1559  
1560 1560  (% _mstvisible="1" %)
1561 -(% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1560 +(% _msthash="315388" _msttexthash="288522" _mstvisible="3" %)**AT Command: AT+PLDTA**
1562 1562  
1563 1563  (% _mstvisible="1" %)
1564 1564  [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1565 1565  
1566 -
1567 1567  (% _mstvisible="1" %)
1568 -(% style="color:#4f81bd" %)**Downlink Command:**
1566 +(% _msthash="315389" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1569 1569  
1570 1570  (% _msthash="315390" _msttexthash="799539" _mstvisible="1" %)
1571 1571  No downlink commands for feature
1572 1572  
1573 -
1574 1574  (% _mstvisible="1" %)
1575 1575  == (% _msthash="437814" _msttexthash="408057" _mstvisible="3" %)4.12 Clear Flash Record(%%) ==
1576 1576  
... ... @@ -1578,20 +1578,17 @@
1578 1578  Feature: Clear flash storage for data log feature.
1579 1579  
1580 1580  (% _mstvisible="1" %)
1581 -(% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1578 +(% _msthash="315392" _msttexthash="311415" _mstvisible="3" %)**AT Command: AT+CLRDTA**
1582 1582  
1583 1583  (% _mstvisible="1" %)
1584 1584  [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1585 1585  
1586 -
1587 1587  (% _mstvisible="1" %)
1588 -(% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1584 +(% _msthash="315393" _msttexthash="388193" _mstvisible="3" %)**Downlink Command: 0xA3**
1589 1589  
1590 1590  (% _mstvisible="1" %)
1591 1591  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1592 1592  
1593 -
1594 -
1595 1595  (% _mstvisible="1" %)
1596 1596  == (% _msthash="740532" _msttexthash="701363" _mstvisible="3" %)4.13 Auto Send None-ACK messages(%%) ==
1597 1597  
... ... @@ -1600,7 +1600,7 @@
1600 1600  
1601 1601  
1602 1602  (% _mstvisible="1" %)
1603 -(% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1597 +(% _msthash="315395" _msttexthash="334256" _mstvisible="3" %)**AT Command: AT+PNACKMD**
1604 1604  
1605 1605  (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1606 1606  The default factory setting is 0
... ... @@ -1610,13 +1610,11 @@
1610 1610  (% _mstvisible="3" %)|(% _msthash="1231321" _msttexthash="130455" _mstvisible="4" style="width:171px" %)AT+PNACKMD=1|(% _msthash="1231322" _msttexthash="377026" _mstvisible="4" style="width:219px" %)Poll None-ACK message|(% _msthash="1231323" _msttexthash="14989" _mstvisible="4" style="width:119px" %)OK
1611 1611  
1612 1612  (% _mstvisible="1" %)
1613 -(% style="color:#4f81bd" %)**Downlink Command: 0x34**
1607 +(% _msthash="315397" _msttexthash="383981" _mstvisible="3" %)**Downlink Command: 0x34**
1614 1614  
1615 1615  (% _mstvisible="1" %)
1616 1616  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1617 1617  
1618 -
1619 -
1620 1620  (% _mstvisible="1" %)
1621 1621  = (% _msthash="568737" _msttexthash="502827" _mstvisible="3" %)5. Battery & How to replace(%%) =
1622 1622  
... ... @@ -1655,18 +1655,11 @@
1655 1655  (% _mstvisible="1" %)
1656 1656  (((
1657 1657  (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
1658 -(((
1659 1659  Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
1660 1660  [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
1661 -)))
1662 1662  
1663 -(((
1664 -
1665 -)))
1666 1666  
1667 -(((
1668 1668  A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
1669 -)))
1670 1670  
1671 1671  
1672 1672  (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
... ... @@ -1675,31 +1675,34 @@
1675 1675  (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
1676 1676  == 6.1 How to use AT Command? ==
1677 1677  
1678 -(((
1679 -LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.
1680 -)))
1663 +LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to
1681 1681  
1665 +connect to LHT65 for using AT command, as below.
1666 +
1682 1682  [[image:image-20220530085651-1.png]]
1683 1683  
1684 1684  
1685 -**Connection:**
1670 +Connection:
1686 1686  
1687 -✓** USB to TTL GND <~-~->GND**
1672 +✓ USB to TTL GND <~-~->GND
1688 1688  
1689 -**✓ USB to TTL RXD <~-~-> D+**
1674 +✓ USB to TTL RXD <~-~-> D+
1690 1690  
1691 -**✓ USB to TTL TXD <~-~-> A11**
1676 +✓ USB to TTL TXD <~-~-> A11
1692 1692  
1693 -**✓ USB to TTL 3.3V <~-~-> D-**
1678 +✓ USB to TTL 3.3V <~-~-> D-
1694 1694  
1680 +In PC, User needs to set serial tool(such as **putty**, SecureCRT) baud rate to **9600** to access to
1695 1695  
1696 -(((
1697 -In PC, User needs to set serial tool(such as **putty**, SecureCRT) baud rate to **9600** to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:**123456**) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1698 -)))
1682 +access serial console for LHT65N. The AT commands are disable by default and need to enter
1699 1699  
1700 -(((
1684 +password (default:**123456**) to active it. Timeout to input AT Command is 5 min, after 5-minute,
1685 +
1686 +user need to input password again. User can use AT+DISAT command to disable AT command
1687 +
1688 +before timeout.
1689 +
1701 1701  Input password and ATZ to activate LHT65N,As shown below:
1702 -)))
1703 1703  
1704 1704  [[image:image-20220530095701-4.png]]
1705 1705  
... ... @@ -1750,10 +1750,14 @@
1750 1750  
1751 1751  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1752 1752  
1753 -AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1741 +AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1
1754 1754  
1755 -AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1743 +in ms
1756 1756  
1745 +AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2
1746 +
1747 +in ms
1748 +
1757 1757  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1758 1758  
1759 1759  AT+NWKID: Get or Set the Network ID
... ... @@ -1917,9 +1917,6 @@
1917 1917  (% _mstvisible="1" %)
1918 1918  (((
1919 1919  (% _msthash="506270" _msttexthash="295386" _mstvisible="2" %)
1920 -
1921 -
1922 -(% _msthash="506270" _msttexthash="295386" _mstvisible="2" %)
1923 1923  (% _mstvisible="3" %)**Package Includes**(%%):
1924 1924  )))
1925 1925  
... ... @@ -1966,10 +1966,6 @@
1966 1966  (((
1967 1967  (% _msthash="903342" _msttexthash="227084" _mstvisible="4" %)
1968 1968  Weight / pcs : 170g
1969 -
1970 -
1971 -(% _msthash="903342" _msttexthash="227084" _mstvisible="4" %)
1972 -
1973 1973  )))
1974 1974  
1975 1975  = 9. Reference =
... ... @@ -1976,7 +1976,6 @@
1976 1976  
1977 1977  * [[Datasheet, Photos, Decoder, Firmware>>https://www.dropbox.com/home/Products_Public_Document/LoRaWAN%20End%20Node/LHT65N%20Temperature%20%26%20Humidity%20Sensor]]
1978 1978  
1979 -
1980 1980  = 10. FCC Warning =
1981 1981  
1982 1982  (% _mstvisible="1" %)

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