Last modified by Mengting Qiu on 2024/04/30 14:27
<
From version < 120.9 >
edited by Xiaoling
on 2022/06/09 18:29
To version < 119.19 >
edited by Xiaoling
on 2022/06/09 18:18
>
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  
... ... @@ -423,6 +423,7 @@
423 423  (% _mstvisible="1" %)
424 424  * Humidity:    0x025C/10=60.4%
425 425  
433 +
426 426  (% _mstvisible="1" %)
427 427  === (% _msthash="116532" _msttexthash="87958" _mstvisible="3" %)2.4.5 Ext #(%%) ===
428 428  
... ... @@ -549,6 +549,7 @@
549 549  )))
550 550  )))
551 551  
560 +
552 552  (% _mstvisible="1" %)
553 553  * (% _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**
554 554  
... ... @@ -579,6 +579,7 @@
579 579  
580 580  )))
581 581  
591 +
582 582  (% _mstvisible="1" %)
583 583  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
584 584  
... ... @@ -591,7 +591,6 @@
591 591  * 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)
592 592  
593 593  
594 -
595 595  (% _mstvisible="1" %)
596 596  == (% _msthash="487097" _msttexthash="454818" _mstvisible="3" %)2.5 Show data on Datacake(%%) ==
597 597  
... ... @@ -655,7 +655,6 @@
655 655  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.
656 656  
657 657  
658 -
659 659  (% _mstvisible="1" %)
660 660  === (% _msthash="369915" _msttexthash="342797" _mstvisible="3" %)2.6.2 Unix TimeStamp(%%) ===
661 661  
... ... @@ -909,6 +909,7 @@
909 909  )))
910 910  )))
911 911  
920 +
912 912  (% _mstvisible="1" %)
913 913  (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
914 914  
... ... @@ -1134,6 +1134,8 @@
1134 1134  )))
1135 1135  
1136 1136  
1146 +
1147 +
1137 1137  (% _mstvisible="1" style="text-align: left;" %)
1138 1138  == (% _msthash="112034" _msttexthash="277511" _mstvisible="3" %)2.9 installation(%%) ==
1139 1139  
... ... @@ -1255,7 +1255,7 @@
1255 1255  Feature: Change LoRaWAN End Node Transmit Interval.
1256 1256  
1257 1257  (% _mstvisible="1" style="text-align: left;" %)
1258 -(% style="color:#4f81bd" %)**AT Command: AT+TDC**
1269 +(% _msthash="315356" _msttexthash="241696" _mstvisible="3" %)**AT Command: AT+TDC**
1259 1259  
1260 1260  (% _mstvisible="1" %)
1261 1261  [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
... ... @@ -1266,7 +1266,7 @@
1266 1266  
1267 1267  
1268 1268  (% _mstvisible="2" style="text-align: left;" %)
1269 -(% style="color:#4f81bd" %)**Downlink Command: 0x01**
1280 +(% _msthash="506255" _msttexthash="381992" _mstvisible="4" %)**Downlink Command: 0x01**
1270 1270  )))
1271 1271  
1272 1272  (% _mstvisible="1" %)
... ... @@ -1304,7 +1304,7 @@
1304 1304  Feature: Change External Sensor Mode.
1305 1305  
1306 1306  (% _mstvisible="1" style="text-align: left;" %)
1307 -(% style="color:#4f81bd" %)**AT Command: AT+EXT**
1318 +(% _msthash="315358" _msttexthash="248118" _mstvisible="3" %)**AT Command: AT+EXT**
1308 1308  
1309 1309  (% _mstvisible="1" %)
1310 1310  [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
... ... @@ -1315,7 +1315,7 @@
1315 1315  
1316 1316  
1317 1317  (% _mstvisible="2" style="text-align: left;" %)
1318 -(% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1329 +(% _msthash="506258" _msttexthash="387855" _mstvisible="4" %)**Downlink Command: 0xA2**
1319 1319  )))
1320 1320  
1321 1321  (% _mstvisible="1" %)
... ... @@ -1365,14 +1365,13 @@
1365 1365  PID is default set to disable (0)
1366 1366  
1367 1367  (% _mstvisible="1" style="text-align: left;" %)
1368 -(% style="color:#4f81bd" %)**AT Command:**
1379 +(% _msthash="315361" _msttexthash="137488" _mstvisible="3" %)**AT Command:**
1369 1369  
1370 1370  (% _mstvisible="1" %)
1371 1371  [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1372 1372  
1373 -
1374 1374  (% _mstvisible="1" style="text-align: left;" %)
1375 -(% style="color:#4f81bd" %)**Downlink Command:**
1385 +(% _msthash="315362" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1376 1376  
1377 1377  (% _mstvisible="1" %)
1378 1378  * 0xA800  **~-~->** AT+PID=0
... ... @@ -1387,7 +1387,7 @@
1387 1387  Feature: Set device password, max 9 digits
1388 1388  
1389 1389  (% _mstvisible="1" style="text-align: left;" %)
1390 -(% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1400 +(% _msthash="315364" _msttexthash="295009" _mstvisible="3" %)**AT Command: AT+PWORD**
1391 1391  
1392 1392  (% _mstvisible="1" %)
1393 1393  [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
... ... @@ -1398,7 +1398,7 @@
1398 1398  
1399 1399  
1400 1400  (% _mstvisible="2" style="text-align: left;" %)
1401 -(% style="color:#4f81bd" %)**Downlink Command:**
1411 +(% _msthash="506261" _msttexthash="298038" _mstvisible="4" %)**Downlink Command:**
1402 1402  )))
1403 1403  
1404 1404  (% _mstvisible="1" %)
... ... @@ -1417,7 +1417,7 @@
1417 1417  Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1418 1418  
1419 1419  (% _mstvisible="1" style="text-align: left;" %)
1420 -(% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1430 +(% _msthash="315366" _msttexthash="289120" _mstvisible="3" %)**AT Command: AT+DISAT**
1421 1421  
1422 1422  (% _mstvisible="1" %)
1423 1423  [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
... ... @@ -1424,7 +1424,7 @@
1424 1424  
1425 1425  
1426 1426  (% _mstvisible="1" style="text-align: left;" %)
1427 -(% style="color:#4f81bd" %)**Downlink Command:**
1437 +(% _msthash="315367" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1428 1428  
1429 1429  (% _msthash="315368" _msttexthash="974311" _mstvisible="1" style="text-align: left;" %)
1430 1430  No downlink command for this feature.
... ... @@ -1437,7 +1437,7 @@
1437 1437  Feature: Set device to sleep mode
1438 1438  
1439 1439  (% _mstvisible="1" style="text-align: left;" %)
1440 -(% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1450 +(% _msthash="315370" _msttexthash="289783" _mstvisible="3" %)**AT Command: AT+SLEEP**
1441 1441  
1442 1442  (% _mstvisible="1" %)
1443 1443  [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
... ... @@ -1444,7 +1444,7 @@
1444 1444  
1445 1445  
1446 1446  (% _mstvisible="1" %)
1447 -(% style="color:#4f81bd" %)**Downlink Command:**
1457 +(% _msthash="315371" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1448 1448  
1449 1449  (% _mstvisible="1" %)
1450 1450  * There is no downlink command to set to Sleep mode.
... ... @@ -1458,7 +1458,7 @@
1458 1458  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1459 1459  
1460 1460  (% _mstvisible="1" %)
1461 -(% style="color:#4f81bd" %)**AT Command:**
1471 +(% _msthash="315373" _msttexthash="137488" _mstvisible="3" %)**AT Command:**
1462 1462  
1463 1463  (% _mstvisible="1" %)
1464 1464  [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
... ... @@ -1465,7 +1465,7 @@
1465 1465  
1466 1466  
1467 1467  (% _mstvisible="1" %)
1468 -(% style="color:#4f81bd" %)**Downlink Command:**
1478 +(% _msthash="315374" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1469 1469  
1470 1470  (% _msthash="315375" _msttexthash="2898571" _mstvisible="1" %)
1471 1471  0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
... ... @@ -1489,7 +1489,7 @@
1489 1489  (% _mstvisible="1" %)
1490 1490  (((
1491 1491  (% _mstvisible="2" %)
1492 -(% style="color:#4f81bd" %)**AT Command:**
1502 +(% _msthash="506265" _msttexthash="137488" _mstvisible="4" %)**AT Command:**
1493 1493  )))
1494 1494  
1495 1495  (% _mstvisible="1" %)
... ... @@ -1497,7 +1497,7 @@
1497 1497  
1498 1498  
1499 1499  (% _mstvisible="1" %)
1500 -(% style="color:#4f81bd" %)**Downlink Command:**
1510 +(% _msthash="315376" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1501 1501  
1502 1502  (% _msthash="315377" _msttexthash="479648" _mstvisible="1" %)
1503 1503  0x28 01 ~/~/ Same As AT+SYNCMOD=1
... ... @@ -1513,7 +1513,7 @@
1513 1513  Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1514 1514  
1515 1515  (% _mstvisible="1" %)
1516 -(% style="color:#4f81bd" %)**AT Command:**
1526 +(% _msthash="315380" _msttexthash="137488" _mstvisible="3" %)**AT Command:**
1517 1517  
1518 1518  (% _mstvisible="1" %)
1519 1519  [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
... ... @@ -1520,7 +1520,7 @@
1520 1520  
1521 1521  
1522 1522  (% _mstvisible="1" %)
1523 -(% style="color:#4f81bd" %)**Downlink Command:**
1533 +(% _msthash="315381" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1524 1524  
1525 1525  (% _msthash="315382" _msttexthash="590044" _mstvisible="1" %)
1526 1526  0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
... ... @@ -1533,7 +1533,7 @@
1533 1533  Feature: Print the sector data from start page to stop page (max is 416 pages).
1534 1534  
1535 1535  (% _mstvisible="1" %)
1536 -(% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1546 +(% _msthash="315384" _msttexthash="264953" _mstvisible="3" %)**AT Command: AT+PDTA**
1537 1537  
1538 1538  (% _mstvisible="1" %)
1539 1539  [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
... ... @@ -1540,7 +1540,7 @@
1540 1540  
1541 1541  
1542 1542  (% _mstvisible="1" %)
1543 -(% style="color:#4f81bd" %)**Downlink Command:**
1553 +(% _msthash="315385" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1544 1544  
1545 1545  (% _msthash="315386" _msttexthash="799539" _mstvisible="1" %)
1546 1546  No downlink commands for feature
... ... @@ -1553,19 +1553,17 @@
1553 1553  Feature: Print the last few data entries
1554 1554  
1555 1555  (% _mstvisible="1" %)
1556 -(% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1566 +(% _msthash="315388" _msttexthash="288522" _mstvisible="3" %)**AT Command: AT+PLDTA**
1557 1557  
1558 1558  (% _mstvisible="1" %)
1559 1559  [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1560 1560  
1561 -
1562 1562  (% _mstvisible="1" %)
1563 -(% style="color:#4f81bd" %)**Downlink Command:**
1572 +(% _msthash="315389" _msttexthash="298038" _mstvisible="3" %)**Downlink Command:**
1564 1564  
1565 1565  (% _msthash="315390" _msttexthash="799539" _mstvisible="1" %)
1566 1566  No downlink commands for feature
1567 1567  
1568 -
1569 1569  (% _mstvisible="1" %)
1570 1570  == (% _msthash="437814" _msttexthash="408057" _mstvisible="3" %)4.12 Clear Flash Record(%%) ==
1571 1571  
... ... @@ -1573,20 +1573,17 @@
1573 1573  Feature: Clear flash storage for data log feature.
1574 1574  
1575 1575  (% _mstvisible="1" %)
1576 -(% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1584 +(% _msthash="315392" _msttexthash="311415" _mstvisible="3" %)**AT Command: AT+CLRDTA**
1577 1577  
1578 1578  (% _mstvisible="1" %)
1579 1579  [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1580 1580  
1581 -
1582 1582  (% _mstvisible="1" %)
1583 -(% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1590 +(% _msthash="315393" _msttexthash="388193" _mstvisible="3" %)**Downlink Command: 0xA3**
1584 1584  
1585 1585  (% _mstvisible="1" %)
1586 1586  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1587 1587  
1588 -
1589 -
1590 1590  (% _mstvisible="1" %)
1591 1591  == (% _msthash="740532" _msttexthash="701363" _mstvisible="3" %)4.13 Auto Send None-ACK messages(%%) ==
1592 1592  
... ... @@ -1595,7 +1595,7 @@
1595 1595  
1596 1596  
1597 1597  (% _mstvisible="1" %)
1598 -(% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1603 +(% _msthash="315395" _msttexthash="334256" _mstvisible="3" %)**AT Command: AT+PNACKMD**
1599 1599  
1600 1600  (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1601 1601  The default factory setting is 0
... ... @@ -1605,13 +1605,11 @@
1605 1605  (% _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
1606 1606  
1607 1607  (% _mstvisible="1" %)
1608 -(% style="color:#4f81bd" %)**Downlink Command: 0x34**
1613 +(% _msthash="315397" _msttexthash="383981" _mstvisible="3" %)**Downlink Command: 0x34**
1609 1609  
1610 1610  (% _mstvisible="1" %)
1611 1611  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1612 1612  
1613 -
1614 -
1615 1615  (% _mstvisible="1" %)
1616 1616  = (% _msthash="568737" _msttexthash="502827" _mstvisible="3" %)5. Battery & How to replace(%%) =
1617 1617  
... ... @@ -1650,18 +1650,11 @@
1650 1650  (% _mstvisible="1" %)
1651 1651  (((
1652 1652  (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
1653 -(((
1654 1654  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:
1655 1655  [[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]]
1656 -)))
1657 1657  
1658 -(((
1659 -
1660 -)))
1661 1661  
1662 -(((
1663 1663  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]]
1664 -)))
1665 1665  
1666 1666  
1667 1667  (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
... ... @@ -1670,31 +1670,34 @@
1670 1670  (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
1671 1671  == 6.1 How to use AT Command? ==
1672 1672  
1673 -(((
1674 -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.
1675 -)))
1669 +LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to
1676 1676  
1671 +connect to LHT65 for using AT command, as below.
1672 +
1677 1677  [[image:image-20220530085651-1.png]]
1678 1678  
1679 1679  
1680 -**Connection:**
1676 +Connection:
1681 1681  
1682 -✓** USB to TTL GND <~-~->GND**
1678 +✓ USB to TTL GND <~-~->GND
1683 1683  
1684 -**✓ USB to TTL RXD <~-~-> D+**
1680 +✓ USB to TTL RXD <~-~-> D+
1685 1685  
1686 -**✓ USB to TTL TXD <~-~-> A11**
1682 +✓ USB to TTL TXD <~-~-> A11
1687 1687  
1688 -**✓ USB to TTL 3.3V <~-~-> D-**
1684 +✓ USB to TTL 3.3V <~-~-> D-
1689 1689  
1686 +In PC, User needs to set serial tool(such as **putty**, SecureCRT) baud rate to **9600** to access to
1690 1690  
1691 -(((
1692 -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.
1693 -)))
1688 +access serial console for LHT65N. The AT commands are disable by default and need to enter
1694 1694  
1695 -(((
1690 +password (default:**123456**) to active it. Timeout to input AT Command is 5 min, after 5-minute,
1691 +
1692 +user need to input password again. User can use AT+DISAT command to disable AT command
1693 +
1694 +before timeout.
1695 +
1696 1696  Input password and ATZ to activate LHT65N,As shown below:
1697 -)))
1698 1698  
1699 1699  [[image:image-20220530095701-4.png]]
1700 1700  
... ... @@ -1745,10 +1745,14 @@
1745 1745  
1746 1746  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1747 1747  
1748 -AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1747 +AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1
1749 1749  
1750 -AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1749 +in ms
1751 1751  
1751 +AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2
1752 +
1753 +in ms
1754 +
1752 1752  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1753 1753  
1754 1754  AT+NWKID: Get or Set the Network ID
... ... @@ -1912,9 +1912,6 @@
1912 1912  (% _mstvisible="1" %)
1913 1913  (((
1914 1914  (% _msthash="506270" _msttexthash="295386" _mstvisible="2" %)
1915 -
1916 -
1917 -(% _msthash="506270" _msttexthash="295386" _mstvisible="2" %)
1918 1918  (% _mstvisible="3" %)**Package Includes**(%%):
1919 1919  )))
1920 1920  
... ... @@ -1961,10 +1961,6 @@
1961 1961  (((
1962 1962  (% _msthash="903342" _msttexthash="227084" _mstvisible="4" %)
1963 1963  Weight / pcs : 170g
1964 -
1965 -
1966 -(% _msthash="903342" _msttexthash="227084" _mstvisible="4" %)
1967 -
1968 1968  )))
1969 1969  
1970 1970  = 9. Reference =
... ... @@ -1971,7 +1971,6 @@
1971 1971  
1972 1972  * [[Datasheet, Photos, Decoder, Firmware>>https://www.dropbox.com/home/Products_Public_Document/LoRaWAN%20End%20Node/LHT65N%20Temperature%20%26%20Humidity%20Sensor]]
1973 1973  
1974 -
1975 1975  = 10. FCC Warning =
1976 1976  
1977 1977  (% _mstvisible="1" %)

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