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51	51	* Micro SIM card slot for NB-IoT SIM
52	52	* 8500mAh Battery for long-term use
53	53
	54	+
54	54	== 1.3 Radar probe specification ==
55	55
56	56
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64	64	* Vertical Angel: 23°
65	65
66	66
	68	+
67	67	== 1.4  Storage Temperature ==
68	68
69	69
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87	87	* Sewer
88	88	* Bottom water level monitoring
89	89
	92	+
90	90	== 1.6  Specification ==
91	91
92	92
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104	104	* B20 @H-FDD: 800MHz
105	105	* B28 @H-FDD: 700MHz
106	106
	110	+
107	107	== 1.7  Installation ==
108	108
109	109
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340	340	* (% style="color:#037691" %)**Timestamp: **(%%)0x6390453d =1670399293 (Unix Time)
341	341
342	342
	347	+
343	343	== 2.4  Payload Explanation and Sensor Interface ==
344	344
345	345	=== 2.4.1  Device ID ===
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397	397
398	398	[[image:1670407401682-959.png]]
399	399
400		-(% style="color:blue" %)**Object1 Distance:**
	405	+**(% style="color:blue" %)Object1 Distance:**
401	401
402	402	Distance between sensor probe to the first object. (unit: cm)
403	403
404	404	For example, if the data you get from the register is 0x02 0x05, the distance between the sensor and the measured object is
405	405
406		-(% style="color:blue" %)**0205(H) = 517 (D) = 517 cm.**
	411	+**(% style="color:blue" %)0205(H) = 517 (D) = 517 cm.**
407	407
408	408
409		-(% style="color:blue" %)**Object2 Distance:**
	414	+**(% style="color:blue" %)Object2 Distance:**
410	410
411	411	Distance between sensor probe to the second object. (unit: cm)
412	412
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420	420	== 2.5  Downlink Payload ==
421	421
422	422
423		-By default, NMDS200 prints the downlink payload to console port.
	428	+By default, NDS03A prints the downlink payload to console port.
424	424
425	425	[[image:image-20221021111414-18.png]] ​
426	426
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437	437
438	438	* (% style="color:#037691" %)**Reset**
439	439
440		-If payload = 0x04FF, it will reset the NMDS200
	445	+If payload = 0x04FF, it will reset the NDS03A
441	441
442	442	* (% style="color:#037691" %)**INTMOD**
443	443
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447	447	== 2.6  ​LED Indicator ==
448	448
449	449
450		-The NMDS200 has an internal LED which is to show the status of different states.
	455	+The NDS03A has an internal LED which is to show the status of different states.
451	451
452	452	* When the device starts normally, the LED will light up for 1 second.
453	453	* After NDS03A join NB-IoT network. The LED will be ON for 3 seconds.
454	454	* For each uplink probe, LED will be on for 500ms.
455	455
	461	+== 2.7  Alarm Base on Timeout ==
456	456
457	457
458		-== 2.7  Distance alarm function ==
	464	+NDS03A can monitor the timeout for a status change, this feature can be used to monitor some events such as door opening too long etc. Related Parameters are:
459	459
460	460
461		-(% style="color:blue" %)**AT Command: AT+ALARM1=min,max**
	467	+(% style="color:blue" %)**1. Keep Status: Status to be monitor**
462	462
463		-**Example 1:**
	469	+Keep Status = 1: Monitor Close to Open event
464	464
465		-AT+ ALARM1 =60,200  ~/~/ Alarm when moisture lower than 60.
	471	+Keep Status = 0: Monitor Open to Close event
466	466
467		-AT+ ALARM2 =min,max
468	468
	474	+(% style="color:blue" %)**2. Keep Time: Timeout to send an Alarm**
469	469
470		-**Example 2:**
	476	+Range 0 ~~ 65535(0xFFFF) seconds.
471	471
472		-AT+ ALARM2 =200,1500  ~/~/ Alarm when temperature lower than 1500
	478	+If keep time = 0, Disable Alarm Base on Timeout feature.
473	473
	480	+If keep time > 0, device will monitor the keep status event and send an alarm when status doesn't change after timeout.
474	474
	482	+
	483	+(% style="color:blue" %)**AT Command to configure:**
	484	+
	485	+(% style="color:blue" %)**PB14 PIN:**
	486	+
	487	+(% style="color:#037691" %)**AT+TTRIG=1,30** (%%) **~-~->**  When the **Keep Status** change from connected to disconnect, and device remains in disconnect status for more than 30 seconds. NDS03A will send an uplink packet, the [[Alarm bit>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/CPL01%20LoRaWAN%20Outdoor%20PulseContact%20%20Sensor%20Manual/#H2.3.3Real-TimeOpen2FCloseStatus2CUplinkFPORT3D2]] (the second bit of 1^^st^^ byte of payload) on this uplink packet is set to 1.
	488	+
	489	+(% style="color:#037691" %)**AT+TTRIG=0,0 ** (%%) **~-~->** Default Value, disable timeout Alarm.
	490	+
	491	+
	492	+(% style="color:blue" %)**PB15 PIN:**
	493	+
	494	+(% style="color:#037691" %)**AT+TTRIG2=1,30**
	495	+
	496	+(% style="color:#037691" %)**AT+TTRIG2=0,0 **
	497	+
	498	+
475	475	== 2.8  Set debug mode ==
476	476
477	477