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Title

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1		-DDS20-NB -- NB-IoT Ultrasonic Liquid Level Sensor User Manual
	1	+DDS20-NB_NB-IoT_Ultrasonic_Liquid_Level_Sensor_User_Manual

Content

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1	1	(% style="text-align:center" %)
2		-[[image:image-20230911134259-1.png||height="570" width="570"]]
	2	+[[image:image-20230819102136-3.png]]
3	3
4	4
	5	+
5	5	**Table of Contents:**
6	6
7	7	{{toc/}}
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13	13
14	14	= 1. Introduction =
15	15
16		-== 1.1 What is DDS20-NB NB-IoT Ultrasonic liquid level Sensor ==
	17	+== 1.1 What is S31x-NB NB-IoT Temperature & Humidity Sensor ==
17	17
18	18
19		-The Dragino DDS20-NB is a **NB-IoT Ultrasonic liquid level sensor** for Internet of Things solution. It uses **none-contact method **to measure the **height of liquid** in a container without opening the container, and send IoT platform via NB-IoT network.
	20	+The Dragino S31-NB and S31B-NB are (% style="color:blue" %)**NB-IoT Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the surrounding (% style="color:blue" %)**environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via NB-IoT network*.
20	20
21		-The DDS20-NB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The none-contact measurement makes the measurement safety, easier and possible for some strict situation.
	22	+The temperature & humidity sensor used in S31-NB is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a (% style="color:blue" %)**waterproof anti-condensation casing**(%%) for long term use.
22	22
23		-DDS20-NB uses **ultrasonic sensing technology** for distance measurement. DDS20-NB is of high accuracy to measure various liquid such as: **toxic substances**, **strong acids**, **strong alkalis** and **various pure liquids** in high-temperature and high-pressure airtight containers.
	24	+S31-NB supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP**(%%) for different application requirement. and Support Uplinks to various IoT Servers.
24	24
25		-PS-NB-NA supports different uplink methods including **MQTT, MQTTs, UDP & TCP** for different application requirement, and support uplinks to various IoT Servers.
	26	+S31-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to several years. (Real-world battery life depends on the use environment, update period and uplink method. Please check related Power Analyze report).
26	26
27		-PS-NB-NA **supports BLE configure **and** OTA update** which make user easy to use.
	28	+*make sure you have NB-IoT coverage locally.
28	28
29		-PS-NB-NA is powered by **8500mAh Li-SOCI2 battery**, it is designed for long-term use up to severa years.
30	30
31		-PS-NB-NA has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
	31	+[[image:1692411831805-116.png]]
32	32
33	33
34		-[[image:image-20230911140426-2.png||height="320" width="951"]]
35		-
36		-
37	37	== 1.2 ​Features ==
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39	39
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49	49	* 8500mAh Battery for long term use
50	50	* Nano SIM card slot for NB-IoT SIM
51	51
	49	+
52	52	== 1.3 Specification ==
53	53
54	54
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108	108	* STOP Mode: 10uA @ 3.3v
109	109	* Max transmit power: 350mA@3.3v
110	110
	109	+
111	111	== 1.4 Applications ==
112	112
113	113
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118	118	* Smart Cities
119	119	* Smart Factory
120	120
	120	+
121	121	== 1.5 Sleep mode and working mode ==
122	122
123	123
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145	145	)))
146	146	|(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
147	147
	148	+
148	148	== 1.7 BLE connection ==
149	149
150	150
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307	307
308	308	* Json entry 1 ~~ 8 are the last 1 ~~ 8 sampling data as specify by (% style="color:#037691" %)**AT+NOUD=8 ** (%%)Command. Each entry includes (from left to right): Temperature, Humidity, Sampling time.
309	309
	311	+
310	310	=== 2.2.2 HEX format Payload(Type~=0) ===
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312	312
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439	439
440	440	* If user only want to send only min or max, user can set the alarm to a value that device won’t reach. For example: (% style="color:#037691" %)**AT+SHTEMP=-80,0.**
441	441
	444	+
442	442	== 2.6 Trggier an uplink by external interrupt ==
443	443
444	444
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456	456
457	457	* (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
458	458
	462	+
459	459	= 3. Configure S31x-NB =
460	460
461	461	== 3.1 Configure Methods ==
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467	467
468	468	* AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
469	469
	474	+
470	470	== 3.2 AT Commands Set ==
471	471
472	472
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572	572
573	573	* Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
574	574
	580	+
575	575	= 6. FAQ =
576	576
577	577	== 6.1 How can I access t BC660K-GL AT Commands? ==
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615	615
616	616	* Weight / pcs : 180g
617	617
	624	+
618	618	= 9. Support =
619	619
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1		-XWiki.Xiaoling

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1		-121.6 KB

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