Wiki source code of SW3L -- LoRaWAN Outdoor Flow Sensor

Last modified by Bei Jinggeng on 2024/04/16 13:42

version	line-number	content
75.2	1
	2
50.3	3	(% style="text-align:center" %)
65.1	4	[[image:image-20220519085532-1.png\|\|_mstalt="431171" height="429" width="366"]]
8.5	5
	6
	7
	8
63.2	9
71.21	10	Table of Contents:
8.5	11
50.3	12	{{toc/}}
8.5	13
	14
	15
55.2	16
	17
	18
8.7	19	= 1. Introduction =
8.5	20
46.5	21	== 1.1 What is SW3L LoRaWAN Flow Sensor ==
8.5	22
67.8	23
46.4	24	(((
50.11	25	The Dragino SW3L is a (% style="color:#037691" %)LoRaWAN Flow Sensor(%%). It detects water flow volume and uplink to IoT server via LoRaWAN network. User can use this to (% style="color:#037691" %)monitor the water usage for buildings.(%%)
46.4	26	)))
8.5	27
46.4	28	(((
50.8	29	SW3L is powered by (% style="color:#037691" %)8500mAh Li-SOCI2 battery(%%), It is designed for long term use up to 10 years. (Actually Battery life depends on the use environment, update period.)
46.4	30	)))
8.5	31
46.4	32	(((
50.11	33	The SW3L will send water flow volume every 20 minutes. It can also (% style="color:#037691" %)detect the water flow status(%%) and (% style="color:#037691" %)send Alarm(%%), to avoid the waste for water usage such as broken toilet case.
46.4	34	)))
8.5	35
46.4	36	(((
8.5	37	SW3L is designed for both indoor and outdoor use. It has a weatherproof enclosure and industrial level battery to work in low to high temperatures.
46.4	38	)))
8.5	39
46.4	40	(((
8.5	41	Each SW3L is pre-load with a set of unique keys for LoRaWAN registration, register these keys to LoRaWAN server and it will auto connect after power on
46.4	42	)))
8.5	43
46.4	44	(((
48.2	45	*Battery life depends on how often to send data, please see battery analyzer.
46.4	46	)))
8.5	47
50.8	48
8.7	49	== 1.2 Features ==
8.5	50
64.2	51
8.5	52	* LoRaWAN v1.0.3 Class A protocol.
	53	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
	54	* Upload water flow volume
	55	* Monitor water waste
	56	* 8500mAh industrial battery(none-rechargeable)
	57	* AT Commands to change parameters
	58	* Uplink on periodically and open/close event
	59	* Datalog feature
	60	* Remote configure parameters via LoRa Downlink
	61	* Firmware upgradable via program port
	62	* Wall Mountable
	63	* Outdoor Use
	64
	65	== 1.3 Installation ==
	66
64.2	67
8.5	68	Each SW3L package is shipped with a flow sensor. Install the flow sensor into water pipe with correct flow direction to start monitoring.
	69
50.9	70
8.5	71	== 1.4 Storage & Operation Temperature ==
	72
64.2	73
8.5	74	-40°C to +85°C
	75
50.9	76
32.4	77	== 1.5 Applications ==
8.5	78
64.2	79
8.5	80	* Flow Sensor application
	81	* Water Control
	82	* Toilet Flow Sensor
	83	* Monitor Waste water
	84
	85	== 1.6 Flow Sensor Spec ==
	86
76.3	87
46.6	88	(((
76.2	89	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:515px" %)
	90	\|=(% style="width: 103px; background-color:#4F81BD; color: white;" %)Model\|=(% style="width: 103px; background-color:#4F81BD; color: white;" %)SW3L-004\|=(% style="width: 103px; background-color:#4F81BD; color: white;" %)SW3L-006\|=(% style="width: 103px; background-color:#4F81BD; color: white;" %)SW3L-010\|=(% style="width: 103px; background-color:#4F81BD; color: white;" %)SW3L-020
76.1	91	\|(% style="width:152px" %)Probe #\|(% style="width:176px" %)DW-004\|(% style="width:173px" %)DW-006\|(% style="width:165px" %)DW-010\|(% style="width:190px" %)DW-020
	92	\|(% style="width:152px" %)Diameter\|(% style="width:176px" %)G1/2" / DN15\|(% style="width:173px" %)G3/4" / DN20\|(% style="width:165px" %)G1" / DN25\|(% style="width:190px" %)G2" / DN50
	93	\|(% style="width:152px" %)Working Range\|(% style="width:176px" %)1~~30L/min\|(% style="width:173px" %)1~~60L/min\|(% style="width:165px" %)2~~100L/min\|(% style="width:190px" %)10~~300L/min
	94	\|(% style="width:152px" %)Measure\|(% style="width:176px" %)450 pulse = 1 L\|(% style="width:173px" %)390 pulse = 1 L\|(% style="width:165px" %)64 pulse = 1 L\|(% style="width:190px" %)12 pulse = 1 L
	95	\|(% style="width:152px" %)Accurancy\|(% style="width:176px" %)±5%\|(% style="width:173px" %)±5%\|(% style="width:165px" %)±5%\|(% style="width:190px" %)±5%
	96	\|(% style="width:152px" %)Power Consumption\|(% style="width:176px" %)1uA, 3.6v (Sensor Only)\|(% style="width:173px" %)1uA, 3.6v (Sensor Only)\|(% style="width:165px" %)1uA, 3.6v (Sensor Only)\|(% style="width:190px" %)1uA, 3.6v (Sensor Only)
	97	\|(% style="width:152px" %)Max Pressure\|(% style="width:176px" %)≤ 1.75Mpa\|(% style="width:173px" %)≤ 1.75Mpa \|(% style="width:165px" %)≤ 1.75Mpa\|(% style="width:190px" %)≤ 1.75Mpa
	98	\|(% style="width:152px" %)Temperature range\|(% style="width:176px" %)<80°C\|(% style="width:173px" %)<80°C\|(% style="width:165px" %)<80°C\|(% style="width:190px" %)<80°C
	99	\|(% style="width:152px" %)Humidity Range\|(% style="width:176px" %)35%~~90%RH (no frost)\|(% style="width:173px" %)35%~~90%RH (no frost)\|(% style="width:165px" %)35%~~90%RH (no frost)\|(% style="width:190px" %)35%~~90%RH (no frost)
67.4	100	)))
	101
76.3	102
8.7	103	== 1.7 Mechanical ==
8.5	104
64.2	105
65.1	106	[[image:1652922789057-479.png\|\|_mstalt="299312"]]
8.6	107
65.1	108	[[image:1652922797548-885.png\|\|_mstalt="300391"]]
8.6	109
54.19	110
77.4	111	(% style="color:blue" %)004: DW-004 Flow Sensor: diameter: G1/2” / DN15. 450 pulse = 1 L
8.6	112
65.1	113	[[image:image-20220519091350-1.png\|\|_mstalt="429611" height="385" width="722"]]
8.6	114
54.19	115
76.3	116	(% style="color:blue" %)006: DW-006 Flow Sensor: diameter: G3/4” / DN20. 390 pulse = 1 L
54.19	117
65.1	118	[[image:image-20220519091423-2.png\|\|_mstalt="5391646" height="258" width="723"]]
8.6	119
54.19	120
76.3	121	(% style="color:blue" %)010: DW-010 Flow Sensor: diameter: G 1” / DN25. 64 pulse = 1 L
54.19	122
65.1	123	[[image:image-20220519091423-3.png\|\|_mstalt="5391971" height="448" width="724"]]
8.6	124
50.9	125
76.3	126	(% style="color:blue" %)020: DW-020 Flow Sensor: diameter: G 2” / DN50. 12 pulse = 1 L
74.1	127
77.2	128	[[image:image-20240125090604-1.png]]
74.1	129
	130
9.2	131	== 1.8 Pin Definitions and Switch ==
	132
64.2	133
65.1	134	[[image:1652923899427-927.png\|\|_mstalt="299377" height="372" width="723"]]
9.2	135
50.9	136
9.4	137	=== 1.8.1 Pin Definition ===
	138
64.2	139
63.16	140	SW3L is pre-configured to connect to two external wires. The other pins are not used. If user wants to know more about other pins, please refer to the user manual of LSN50v2 at:
9.3	141
66.2	142	[[https:~~/~~/www.dropbox.com/sh/djkxs7mr17y94mi/AABVlWbM9uzK9OA3mXyAT10Za?dl=0>>https://www.dropbox.com/sh/djkxs7mr17y94mi/AABVlWbM9uzK9OA3mXyAT10Za?dl=0]]
50.9	143
77.6	144	(% style="color:red" %)Add PA11 digital input and PA12 digital input(Since firmware v1.2.0)
55.7	145
64.2	146
9.4	147	=== 1.8.2 Jumper JP2(Power ON/OFF) ===
9.3	148
64.2	149
9.3	150	Power on Device when putting this jumper.
	151
50.9	152
9.4	153	=== 1.8.3 BOOT MODE / SW1 ===
9.3	154
64.2	155
9.4	156	(((
63.17	157	1) ISP: upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
9.3	158	2) Flash: work mode, the device starts to work and send out console output for further debug
9.4	159	)))
9.3	160
50.10	161
9.4	162	=== 1.8.4 Reset Button ===
	163
64.2	164
9.3	165	Press to reboot the device.
	166
50.10	167
9.4	168	=== 1.8.5 LED ===
	169
64.2	170
9.3	171	It will flash:
77.6	172	1) Boot the device in flash mode
	173	2) Send an uplink packe
9.5	174
50.10	175
17.3	176	= 2. Operation Mode =
9.5	177
	178	== 2.1 How it works? ==
	179
64.2	180
9.6	181	Each SW3L is shipped with a worldwide unique set of OTAA keys. To use SW3L in a LoRaWAN network, user needs to input the OTAA keys in the LoRaWAN network server. So SW3L can join the LoRaWAN network and start to transmit sensor data.
9.5	182
50.49	183
9.5	184	== 2.2 Example to use for LoRaWAN network ==
	185
64.2	186
9.5	187	This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Usages with other LoRaWAN IoT servers are similar.
	188
65.1	189	[[image:1652944563101-603.png\|\|_mstalt="292279" height="321" width="729"]]
9.5	190
66.2	191
48.3	192	* In this use case, the SW3L is connected into water line to measure water flow and send the status to the LoRaWAN server. The SW3L will uplink different types of messages to the LoRaWAN server. See [[Uplink payload>>\|\|anchor="H2.3UplinkPayload"]] for detail.
9.5	193
10.2	194	(((
	195	Assume the DLOS8 is already set to connect to the [[TTN V3 network >>url:https://eu1.cloud.thethings.network]]. We need to add the SW3L device in TTN V3:
64.2	196
	197
10.2	198	)))
9.5	199
10.2	200	(((
63.14	201	(% style="color:blue" %)Step 1(%%): Create a device in TTN V3 with the OTAA keys from SW3L.
10.2	202	)))
9.5	203
10.2	204	(((
	205	Each SW3L is shipped with a sticker with the default device EUI as below:
	206	)))
9.5	207
71.3	208	[[image:image-20230426085254-1.png\|\|height="236" width="508"]]
9.5	209
69.2	210
9.5	211	Users can enter these keys in the LoRaWAN Server portal. Below is the TTN V3 screenshot:
	212
	213	Add APP EUI in the application.
	214
65.1	215	[[image:image-20220519151704-1.png\|\|_mstalt="429715"]]
9.5	216
67.2	217
65.1	218	[[image:image-20220519151704-2.png\|\|_mstalt="430079" height="322" width="717"]]
43.2	219
	220
65.1	221	[[image:image-20220519151704-3.png\|\|_mstalt="430443"]]
43.2	222
	223
65.1	224	[[image:image-20220519151704-4.png\|\|_mstalt="430807"]]
43.2	225
9.5	226	Add APP KEY and DEV EUI
	227
55.8	228
	229
63.14	230	(% style="color:blue" %)Step 2(%%): Power on SW3L
9.5	231
65.1	232	[[image:image-20220519094347-1.png\|\|_mstalt="432549" height="430" width="725"]]
9.5	233
66.2	234
10.2	235	(((
	236	Put the jumper to power on SW3L and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and the user can see it in the panel.
	237	)))
9.5	238
65.1	239	[[image:1652924675638-547.png\|\|_mstalt="298363" height="254" width="732"]]
9.5	240
50.48	241
9.5	242	== 2.3 Uplink Payload ==
	243
64.2	244
44.2	245	(((
9.5	246	Uplink payloads have two types:
44.2	247	)))
9.5	248
44.2	249	* (((
	250	Open/Close Status: Use FPORT=2
	251	)))
	252	* (((
	253	Other control commands: Use other FPORT fields.
	254	)))
9.5	255
44.2	256	(((
9.5	257	The application server should parse the correct value based on FPORT settings.
50.47	258
	259
44.2	260	)))
9.5	261
	262	=== 2.3.1 Device Status, FPORT~=5 ===
	263
64.2	264
11.2	265	(((
44.2	266	(((
11.2	267	Include device configure status. Once SW3L Joined the network, it will uplink this message to the server. After that, SW3L will uplink Device Status every 12 hours.
	268	)))
44.2	269	)))
9.5	270
11.2	271	(((
44.2	272	(((
11.2	273	Users can also use the downlink command(0x26 01) to ask SW3L to resend this uplink. This uplink payload also includes the DeviceTimeReq to get time.
51.2	274
75.3	275	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
75.4	276	\|(% colspan="6" style="background-color:#4f81bd; color:white" %)Device Status (FPORT=5)
71.7	277	\|(% style="width:103px" %)Size (bytes)\|(% style="width:72px" %)1\|2\|(% style="width:91px" %)1\|(% style="width:86px" %)1\|(% style="width:44px" %)2
75.2	278	\|(% style="width:103px" %)Value\|(% style="width:72px" %)Sensor Model\|Firmware Version\|(% style="width:91px" %)Frequency Band\|(% style="width:86px" %)Sub-band\|(% style="width:44px" %)BAT
11.2	279	)))
44.2	280	)))
9.5	281
	282
	283	Example parse in TTNv3
	284
65.1	285	[[image:1652925144491-755.png\|\|_mstalt="296296" height="139" width="732"]]
9.5	286
63.14	287	* (% style="color:#037691" %)Sensor Model(%%): For SW3L, this value is 0x11
9.5	288
63.14	289	* (% style="color:#037691" %)Firmware Version(%%): 0x0100, Means: v1.0.0 version
9.5	290
63.14	291	* (% style="color:#037691" %)Frequency Band(%%):
9.5	292
	293	*0x01: EU868
13.2	294
9.5	295	*0x02: US915
13.2	296
9.5	297	*0x03: IN865
13.2	298
9.5	299	*0x04: AU915
13.2	300
9.5	301	*0x05: KZ865
13.2	302
9.5	303	*0x06: RU864
13.2	304
9.5	305	*0x07: AS923
13.2	306
9.5	307	*0x08: AS923-1
13.2	308
9.5	309	*0x09: AS923-2
13.2	310
9.5	311	*0x0a: AS923-3
13.2	312
9.5	313	*0x0b: CN470
13.2	314
9.5	315	*0x0c: EU433
13.2	316
9.5	317	*0x0d: KR920
13.2	318
9.5	319	*0x0e: MA869
	320
	321	* (((
63.14	322	(% style="color:#037691" %)Sub-Band:
9.5	323
	324	* AU915 and US915:value 0x00 ~~ 0x08
	325	* CN470: value 0x0B ~~ 0x0C
	326	* Other Bands: Always 0x00
51.3	327
	328
9.5	329	)))
	330
63.14	331	* (% style="color:#037691" %)Battery Info:
9.5	332
	333	Check the battery voltage.
	334
	335	Ex1: 0x0B45 = 2885mV
	336
	337	Ex2: 0x0B49 = 2889mV
	338
50.46	339
9.5	340	=== 2.3.2 Sensor Configuration, FPORT~=4 ===
	341
64.2	342
13.2	343	SW3L will only send this command after getting the downlink command (0x26 02) from the server.
9.5	344
75.3	345	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
75.4	346	\|(% style="background-color:#4f81bd; color:white; width:70px" %) Size(bytes)\|(% style="background-color:#4f81bd; color:white; width:105px" %)3\|(% style="background-color:#4f81bd; color:white; width:60px" %)1\|(% style="background-color:#4f81bd; color:white; width:96px" %)1\|(% style="background-color:#4f81bd; color:white; width:105px" %)2\|(% style="background-color:#4f81bd; color:white; width:74px" %)1
71.22	347	\|Value\|(% style="width:104px" %)TDC(unit:sec)\|(% style="width:43px" %)N/A\|(% style="width:91px" %)Stop Timer\|(% style="width:100px" %)Alarm Timer\|(% style="width:69px" %)Reserve
71.7	348
63.14	349	* (% style="color:#037691" %)TDC: (default: 0x0004B0)
9.5	350
13.2	351	Uplink interval for the total pulse count, default value is 0x0004B0 which is 1200 seconds = 20 minutes.
9.5	352
52.2	353
63.14	354	* (% style="color:#037691" %)STOP Duration & Alarm Timer
9.5	355
48.4	356	Shows the configure value of [[Alarm for continuously water flow>>\|\|anchor="H3.4Alarmforcontinuouslywaterflow"]]
9.5	357
65.1	358	[[image:image-20220519095747-2.png\|\|_mstalt="434460" height="113" width="723"]]
9.5	359
50.45	360
17.4	361	=== 2.3.3 Water Flow Value, Uplink FPORT~=2 ===
9.5	362
64.2	363
17.2	364	(((
	365	SW3L will send this uplink after Device Status once join the LoRaWAN network successfully. And SW3L will:
	366	)))
9.5	367
17.2	368	(((
48.4	369	periodically send this uplink every 20 minutes, this interval [[can be changed>>\|\|anchor="H3.1SetTransmitIntervalTime"]].
17.2	370	)))
9.5	371
17.2	372	(((
9.5	373	Uplink Payload totals 11 bytes.
17.2	374	)))
9.5	375
75.3	376	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
	377	\|=(% colspan="6" style="width: 510px;background-color:#4F81BD;color:white" %)Water Flow Value, FPORT=2
67.9	378	\|(% style="width:60px" %)Size(bytes)\|(% style="width:130px" %)1\|(% style="width:130px" %)4\|(% style="width:30px" %)1\|(% style="width:50px" %)1\|(% style="width:80px" %)4
75.4	379	\|(% style="width:110px" %)Value\|(% style="width:81px" %)Calculate Flag & [[Alarm>>\|\|anchor="H3.4Alarmforcontinuouslywaterflow"]]\|(% style="width:95px" %)(((
17.2	380	Total pulse Or Last Pulse
52.3	381	)))\|(% style="width:55px" %)MOD\|(% style="width:115px" %)Reserve(0x01)\|(% style="width:129px" %)[[Unix TimeStamp>>\|\|anchor="H2.4.1UnixTimeStamp"]]
9.5	382
75.3	383	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:470px" %)
	384	\|=(% colspan="4" style="width: 470px;background-color:#4F81BD;color:white" %)Status & Alarm field
67.10	385	\|(% style="width:60px" %)Size(bit)\|(% style="width:80px" %)6\|(% style="width:310px" %)1\|(% style="width:20px" %)1
75.4	386	\|(% style="width:88px" %)Value\|(% style="width:117px" %)Calculate Flag\|(% style="width:221px" %)Alarm: 0: No Alarm; 1: Alarm\|(% style="width:64px" %)N/A
9.5	387
65.1	388	[[image:image-20220519095946-3.png\|\|_mstalt="435110" height="284" width="736"]]
17.2	389
52.4	390
17.5	391	* (((
63.14	392	(% style="color:#037691" %)Calculate Flag
17.5	393	)))
9.5	394
17.5	395	(((
67.1	396	The calculate flag is a user defined field, IoT server can use this flag to handle different meters with different pulse factors. For example, if there are 100 Flow Sensors, meters 1 ~~50 are 1 liter/pulse and meters 51 ~~ 100 has 1.5 liter/pulse.
17.5	397	)))
9.5	398
17.5	399	(((
17.3	400	Example: in the default payload:
17.5	401	)))
9.5	402
74.1	403	(((
	404	* calculate flag=0: for SW3L-004 Flow Sensor: 450 pulse = 1 L
	405	* calculate flag=1: for SW3L-006 Flow Sensor: 390 pulse = 1 L
	406	* calculate flag=2: for SW3L-010 Flow Sensor: 64 pulse = 1 L
	407	* calculate flag=3: for SW3L-020 Flow Sensor: 12 pulse = 1 L
17.5	408	)))
17.2	409
17.5	410	(((
9.5	411	Default value: 0.
17.5	412	)))
9.5	413
17.5	414	(((
9.5	415	Range (6 bits): (b)000000 ~~ (b) 111111
67.1	416
	417	If user use with a meter for example is 0.02L/pulse. To proper decode the correct value in server,
	418
	419	1) User can set the Calculate Flag of this sensor to 3.
	420
	421	2) In server side, when a sensor data arrive, the decoder will check the value of Calculate Flag, It the value is 3, the total volume = 0.02 x Pulse Count.
17.5	422	)))
9.5	423
17.5	424	(((
48.4	425	(% style="color:red" %)NOTE: User need to set Calculate Flag to proper value before use Flow Sensor. Downlink or AT Command see: (%%)Refer: [[Set Calculate Flag>>\|\|anchor="H3.6Setthecalculateflag"]]
52.4	426
	427
17.5	428	)))
9.5	429
17.5	430	* (((
63.14	431	(% style="color:#037691" %)Alarm
17.5	432	)))
9.5	433
17.5	434	(((
71.19	435	See [[Alarm for continuously water flow>>\|\|anchor="H3.4Alarmforcontinuouslywaterflow"]]
17.5	436	)))
9.5	437
65.1	438	[[image:image-20220519095946-4.png\|\|_mstalt="435474" height="65" width="724"]]
17.2	439
52.4	440
17.5	441	* (((
63.14	442	(% style="color:#037691" %)Total pulse
17.5	443	)))
9.5	444
17.5	445	(((
17.2	446	Total pulse/counting since factory
17.5	447	)))
9.5	448
17.5	449	(((
17.2	450	Range (4 Bytes) : 0x00000000~~ 0xFFFFFFFF .
52.4	451
	452
17.5	453	)))
9.5	454
17.5	455	* (((
63.14	456	(% style="color:#037691" %)Last Pulse
17.5	457	)))
9.5	458
17.5	459	(((
17.2	460	Total pulse since last FPORT=2 uplink. (Default 20 minutes)
17.5	461	)))
9.5	462
17.5	463	(((
17.2	464	Range (4 Bytes) : 0x00000000~~ 0xFFFFFFFF .
52.4	465
	466
17.5	467	)))
9.5	468
17.5	469	* (((
63.14	470	(% style="color:#037691" %)MOD: Default =0
17.5	471	)))
17.2	472
17.5	473	(((
17.3	474	MOD=0 ~-~-> Uplink Total Pulse since factory
17.5	475	)))
17.2	476
17.5	477	(((
17.3	478	MOD=1 ~-~-> Uplink total pulse since last FPORT=2 uplink.
52.4	479
	480
17.5	481	)))
17.2	482
17.5	483	* (((
63.14	484	(% style="color:#037691" %)Water Flow Value
66.2	485
	486
	487
17.5	488	)))
17.2	489
17.5	490	(((
66.2	491	Total Water Flow Volume = (Calculate Flag) x (Total Pulse)=9597/450=21.3L
	492
	493
17.5	494	)))
17.2	495
65.1	496	[[image:image-20220519095946-5.png\|\|_mstalt="435838" height="50" width="727"]]
17.2	497
52.4	498
66.2	499
17.5	500	(((
66.2	501	Total Water Flow for TDC timer = (Calculate Flag) x (Last Pulse)=79/450=0.2L
	502
	503
17.5	504	)))
17.2	505
65.1	506	[[image:image-20220519095946-6.png\|\|_mstalt="436202" height="43" width="733"]]
17.2	507
50.44	508
19.2	509	=== 2.3.4 Historical Water Flow Status, FPORT~=3 ===
9.5	510
64.2	511
19.2	512	(((
63.17	513	SW3L stores sensor values and users can retrieve these history values via the [[downlink command>>\|\|anchor="H2.4DatalogFeature"]].
19.2	514	)))
9.5	515
19.2	516	(((
	517	The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time water flow status.
	518	)))
9.5	519
19.2	520	* (((
48.4	521	Each data entry is 11 bytes and has the same structure as [[real time water flow status>>\|\|anchor="H2.3.3A0WaterFlowValue2CUplinkFPORT3D2"]], to save airtime and battery, SW3L will send max bytes according to the current DR and Frequency bands.
19.2	522	)))
9.5	523
19.2	524	(((
9.5	525	For example, in the US915 band, the max payload for different DR is:
19.2	526	)))
9.5	527
19.2	528	(((
67.2	529	a) DR0: max is 11 bytes so one entry of data
19.2	530	)))
9.5	531
19.2	532	(((
67.2	533	b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
19.2	534	)))
9.5	535
19.2	536	(((
67.2	537	c) DR2: total payload includes 11 entries of data
19.2	538	)))
9.5	539
19.2	540	(((
67.2	541	d) DR3: total payload includes 22 entries of data.
19.2	542	)))
9.5	543
19.2	544	(((
67.2	545	If SW3L doesn't have any data in the polling time. It will uplink 11 bytes of 0
52.6	546
	547
19.2	548	)))
9.5	549
19.2	550	(((
52.7	551	(% style="color:#037691" %)Downlink:
19.2	552	)))
9.5	553
19.2	554	(((
	555	0x31 62 46 B1 F0 62 46 B3 94 07
	556	)))
9.5	557
65.1	558	[[image:1652926690850-712.png\|\|_mstalt="295178" height="115" width="726"]]
9.5	559
52.6	560
19.2	561	(((
52.7	562	(% style="color:#037691" %)Uplink:
19.2	563	)))
9.5	564
19.2	565	(((
	566	00 00 01 00 00 00 00 62 46 B2 26 00 00 01 00 00 00 00 62 46 B2 5D 00 00 01 00 00 00 00 62 46 B2 99 00 00 01 00 00 00 00 62 46 B2 D5 00 00 01 00 00 01 15 62 46 B3 11 00 00 01 00 00 01 1F 62 46 B3 7E
52.6	567
	568
19.2	569	)))
9.5	570
19.2	571	(((
52.7	572	(% style="color:#037691" %)Parsed Value:
19.2	573	)))
9.5	574
19.2	575	(((
	576	[Alarm, Calculate Flag, MOD, Total pulse or Last Pulse, Water Flow Value, TIME]
	577	)))
9.5	578
19.2	579	(((
	580
	581	)))
9.5	582
19.2	583	(((
	584	[FALSE,0,0,0,0.0,2022-04-01 08:04:54],
	585	)))
9.5	586
19.2	587	(((
	588	[FALSE,0,0,0,0.0,2022-04-01 08:05:49],
	589	)))
9.5	590
19.2	591	(((
	592	[FALSE,0,0,0,0.0,2022-04-01 08:06:49],
	593	)))
9.5	594
19.2	595	(((
	596	[FALSE,0,0,0,0.0,2022-04-01 08:07:49],
	597	)))
9.5	598
19.2	599	(((
	600	[FALSE,0,0,277,0.6,2022-04-01 08:08:49],
	601	)))
9.5	602
19.2	603	(((
	604	[FALSE,0,0,287,0.6,2022-04-01 08:10:38],
66.2	605
	606
19.2	607	)))
9.5	608
65.1	609	[[image:1652926777796-267.png\|\|_mstalt="300183" height="279" width="724"]]
9.5	610
	611
	612	== 2.4 Datalog Feature ==
	613
64.2	614
9.5	615	When a user wants to retrieve sensor value, he can send a poll command from the IoT platform to ask the sensor to send value in the required time slot.
	616
50.43	617
9.5	618	=== 2.4.1 Unix TimeStamp ===
	619
64.2	620
21.2	621	SW3L uses Unix TimeStamp format based on
9.5	622
65.1	623	[[image:1652926852443-847.png\|\|_mstalt="297427" height="112" width="724"]]
9.5	624
	625	Users can get this time from the link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
	626
	627	Below is the converter example
	628
65.1	629	[[image:1652926913271-611.png\|\|_mstalt="293605" height="421" width="720"]]
9.5	630
55.13	631
9.5	632	=== 2.4.2 Set Device Time ===
	633
50.14	634
21.2	635	(% style="color:#4f81bd" %)Through LoRaWAN MAC Command
9.5	636
21.2	637	(((
48.4	638	Once SW3L Joined the LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to SW3L. If SW3L fails to get the time from the server, SW3L will use the internal time and wait for the next time request ~[[[via Device Status (FPORT=5)>>\|\|anchor="H2.3.1DeviceStatus2CFPORT3D5"]]].
66.2	639
	640
21.2	641	)))
9.5	642
21.2	643	(((
66.2	644	(% style="color:red" %)Note: LoRaWAN Server needs to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature.
50.42	645
	646
21.2	647	)))
9.5	648
	649	=== 2.4.3 Poll sensor value ===
	650
64.2	651
9.5	652	Users can poll sensor values based on timestamps. Below is the downlink command.
	653
75.3	654	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:459px" %)
	655	\|=(% colspan="4" style="width: 456px;background-color:#4F81BD;color:white" %)Downlink Command to poll Open/Close status (0x31)
21.3	656	\|(% style="width:62px" %)1byte\|(% style="width:137px" %)4bytes\|(% style="width:136px" %)4bytes\|(% style="width:120px" %)1byte
	657	\|(% style="width:62px" %)31\|(% style="width:137px" %)Timestamp start\|(% style="width:136px" %)Timestamp end\|(% style="width:120px" %)Uplink Interval
9.5	658
45.3	659	(((
9.5	660	Timestamp start and Timestamp end-use Unix TimeStamp format as mentioned above. Devices will reply with all data logs during this period, using the uplink interval.
45.3	661	)))
9.5	662
45.3	663	(((
65.1	664	For example, downlink command[[image:image-20220519152849-5.png\|\|_mstalt="434772"]]
45.3	665	)))
9.5	666
45.3	667	(((
66.2	668	Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
45.3	669	)))
9.5	670
45.3	671	(((
9.5	672	Uplink Internal =5s，means CPL01 will send one packet every 5s. range 5~~255s.
50.41	673
	674
45.3	675	)))
9.5	676
	677	=== 2.4.4 Decoder in TTN V3 ===
	678
64.2	679
65.1	680	[[image:1652927365661-475.png\|\|_mstalt="297089" height="359" width="723"]]
9.5	681
67.6	682	Please check the decoder from this link: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
9.5	683
	684
55.10	685	== 2.5 Show data on Datacake ==
9.5	686
64.2	687
32.3	688	(((
9.5	689	Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
32.3	690	)))
9.5	691
32.3	692	(((
66.2	693	(% style="color:blue" %)Step 1(%%): Link TTNv3 to Datacake [[https:~~/~~/docs.datacake.de/lorawan/lns/thethingsindustries#create-integration-on-tti>>url:https://docs.datacake.de/lorawan/lns/thethingsindustries#create-integration-on-tti]]
32.3	694	)))
9.5	695
32.3	696	(((
66.2	697	(% style="color:blue" %)Step 2(%%): Configure SW3L in Datacake
67.6	698
	699
32.3	700	)))
9.5	701
65.1	702	[[image:image-20220519103234-7.png\|\|_mstalt="430482" height="562" width="492"]]
9.5	703
67.6	704
65.1	705	[[image:image-20220519103234-8.png\|\|_mstalt="430846" height="550" width="549"]]
9.5	706
67.6	707
65.1	708	[[image:image-20220519103234-9.png\|\|_mstalt="431210" height="493" width="666"]]
9.5	709
67.6	710
65.1	711	[[image:image-20220519103234-10.png\|\|_mstalt="451217" height="234" width="724"]]
9.5	712
67.6	713
65.1	714	[[image:image-20220519103234-11.png\|\|_mstalt="451594" height="386" width="727"]]
9.5	715
67.6	716
65.1	717	[[image:image-20220519103234-12.png\|\|_mstalt="451971" height="262" width="728"]]
9.5	718
67.6	719
65.1	720	[[image:image-20220519103234-13.png\|\|_mstalt="452348" height="216" width="727"]]
9.5	721
67.6	722
65.1	723	[[image:image-20220519103234-14.png\|\|_mstalt="452725" height="464" width="722"]]
9.5	724
67.6	725
65.1	726	[[image:image-20220519103234-15.png\|\|_mstalt="453102" height="488" width="725"]]
9.5	727
67.6	728
65.1	729	[[image:image-20220519103234-16.png\|\|_mstalt="453479" height="407" width="722"]]
32.4	730
50.39	731
32.4	732	= 3. Configure SW3L via AT Command or LoRaWAN Downlink =
	733
64.2	734
32.4	735	Use can configure SW3L via AT Command or LoRaWAN Downlink.
	736
50.15	737	* AT Command Connection: See [[FAQ>>\|\|anchor="H5.FAQ"]].
50.17	738	* LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
32.4	739
	740	There are two kinds of commands to configure SW3L, they are:
	741
50.18	742
32.4	743	* (% style="color:#4f81bd" %)General Commands.
	744
	745	These commands are to configure:
	746
	747	* General system settings like uplink interval.
	748	* LoRaWAN protocol & radio related command.
	749
55.12	750	They are the same for all Dragino Devices which support DLWS-005 LoRaWAN Stack(Note~~). These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
32.4	751
	752
	753	* (% style="color:#4f81bd" %)Commands special design for SW3L
	754
	755	These commands are only valid for SW3L, as below:
	756
50.18	757
32.4	758	== 3.1 Set Transmit Interval Time ==
	759
64.2	760
32.4	761	Feature: Change LoRaWAN End Node Transmit Interval.
	762
64.2	763
54.8	764	(% style="color:#4f81bd" %)AT Command: AT+TDC
32.4	765
75.3	766	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
	767	\|=(% style="width: 160px;background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 140px;background-color:#4F81BD;color:white" %)Function\|=(% style="width: 210px;background-color:#4F81BD;color:white" %)Response
71.13	768	\|(% style="width:156px" %)AT+TDC=?\|(% style="width:137px" %)Show current transmit Interval\|(((
	769	30000
	770	OK
	771	the interval is 30000ms = 30s
	772	)))
	773	\|(% style="width:156px" %)AT+TDC=60000\|(% style="width:137px" %)Set Transmit Interval\|(((
	774	OK
	775	Set transmit interval to 60000ms = 60 seconds
	776	)))
32.4	777
	778	(% style="color:#4f81bd" %)Downlink Command: 0x01
	779
	780	Format: Command Code (0x01) followed by 3 bytes time value.
	781
66.3	782	If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
32.4	783
67.2	784	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	785	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
32.4	786
	787	== 3.2 Set Password ==
	788
64.2	789
32.4	790	Feature: Set device password, max 9 digits
	791
64.2	792
54.8	793	(% style="color:#4f81bd" %)AT Command: AT+PWORD
32.4	794
75.3	795	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:405px" %)
	796	\|=(% style="width: 170px;background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 124px;background-color:#4F81BD;color:white" %)Function\|=(% style="width: 110px;background-color:#4F81BD;color:white" %)Response
71.13	797	\|(% style="width:170px" %)(((
	798	AT+PWORD=?
	799	)))\|(% style="width:123px" %)(((
	800	Show password
	801	)))\|(% style="width:109px" %)(((
32.4	802	(((
	803	123456
	804	)))
	805
	806	(((
	807	OK
	808	)))
	809	)))
71.13	810	\|(% style="width:170px" %)(((
	811	AT+PWORD=999999
	812	)))\|(% style="width:123px" %)(((
	813	Set password
	814	)))\|(% style="width:109px" %)(((
32.4	815	OK
	816	)))
	817
	818	(% style="color:#4f81bd" %)Downlink Command:
	819
	820	No downlink command for this feature.
	821
50.38	822
32.4	823	== 3.3 Quit AT Command ==
	824
64.2	825
32.4	826	(((
	827	Feature: Quit AT Command mode, so user needs to input the password again before using AT Commands.
54.8	828	(% style="color:#4f81bd" %)AT Command: AT+DISAT
32.4	829	)))
	830
75.3	831	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:452px" %)
	832	\|=(% style="width: 155px;background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 198px;background-color:#4F81BD;color:white" %)Function\|=(% style="width: 99px;background-color:#4F81BD;color:white" %)Response
71.13	833	\|(% style="width:155px" %)AT+DISAT\|(% style="width:198px" %)Quit AT Commands mode\|(% style="width:96px" %)OK
32.4	834
	835	(% style="color:#4f81bd" %)Downlink Command:
	836
	837	No downlink command for this feature.
	838
50.37	839
32.5	840	== 3.4 Alarm for continuously water flow ==
32.4	841
64.2	842
32.5	843	(((
	844	This feature is to monitor and send Alarm for continuously water flow.
	845	)))
32.4	846
32.5	847	(((
67.2	848	Example case is for Toilet water monitoring, if some one push toilet button, the toilet will have water flow. If the toilet button has broken and can't returned to original state, the water flow will keep for hours or days which cause huge waste for water.
32.5	849	)))
32.4	850
32.5	851	(((
	852	To monitor this faulty and send alarm, there are two settings:
	853	)))
32.4	854
32.5	855	* (((
63.14	856	(% style="color:#4f81bd" %)Stop Duration: Unit: Second
32.5	857	)))
32.4	858
32.5	859	(((
67.2	860	Default: 15s, If SW3L didn't see any water flow in 15s, SW3L will consider stop of water flow event.
32.5	861	)))
32.4	862
32.5	863	* (((
63.14	864	(% style="color:#4f81bd" %)Alarm Timer: Units: Minute; Default 0 minutes (means Alarm disable)
32.5	865	)))
32.4	866
32.5	867	(((
53.3	868
	869
67.2	870	Example: 3 minutes, if SW3L detect a start of water flow event and didn't detect a stop event within Alarm timer, SW3L will send an Alarm to indicate a water flow abnormal alarm.
32.5	871	)))
32.4	872
32.5	873	(((
	874	So for example, If we set stop duration=15s and Alarm Timer=3minutes. If the toilet water flow continuously for more than 3 minutes, Sensor will send an alarm (in Confirmed MODE) to platform.
	875	)))
32.4	876
32.5	877	(((
64.2	878	(% style="color:red" %)Note: After this alarm is send, sensor will consider a stop of water flow and count for another new event. So if water flow waste last for 1 hour, Sensor will keep sending alarm every 3 minutes.
53.3	879
	880
32.5	881	)))
32.4	882
32.5	883	(((
	884	(% style="color:#4f81bd" %)AT Command(%%) to configure:
	885	)))
32.4	886
32.5	887	* (((
	888	AT+PTRIG=15,3 ~-~-> Set Stop duration: 15s, Alarm Timer: 3 minutes.
	889	)))
	890	* (((
	891	AT+ PTRIG=15,0 ~-~-> Default Value, disable water waste Alarm.
	892	)))
32.4	893
32.5	894	(((
53.3	895
	896
32.5	897	(% style="color:#4f81bd" %)Downlink Command(%%) to configure:
	898	)))
32.4	899
32.5	900	(((
67.2	901	Command: 0xAA aa bb cc
32.5	902	)))
32.4	903
32.5	904	(((
	905	AA: Command Type Code
	906	)))
32.4	907
32.5	908	(((
	909	aa: Stop duration
	910	)))
32.4	911
32.5	912	(((
	913	bb cc: Alarm Timer
	914	)))
32.4	915
32.5	916	(((
	917	If user send 0xAA 0F 00 03: equal to AT+PTRIG=15,3
	918	)))
32.4	919
54.6	920
32.6	921	== 3.5 Clear Flash Record ==
32.4	922
64.3	923
32.4	924	Feature: Clear flash storage for data log feature.
	925
64.3	926
54.8	927	(% style="color:#4f81bd" %)AT Command: AT+CLRDTA
32.4	928
75.3	929	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
	930	\|=(% style="width: 156px; background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 177px; background-color:#4F81BD;color:white" %)Function\|=(% style="width: 177px; background-color:#4F81BD;color:white" %)Response
71.13	931	\|(% style="width:154px" %)AT+CLRDTA\|(% style="width:177px" %)Clear flash storage for data log feature.\|(% style="width:177px" %)Clear all stored sensor data... OK
32.4	932
32.6	933	(% style="color:#4f81bd" %)Downlink Command:
32.4	934
67.2	935	* Example: 0xA301 ~/~/ Same as AT+CLRDTA
32.4	936
32.7	937	== 3.6 Set the calculate flag ==
32.4	938
64.3	939
32.4	940	Feature: Set the calculate flag
	941
64.3	942
54.8	943	(% style="color:#4f81bd" %)AT Command: AT+CALCFLAG
32.4	944
75.3	945	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:462px" %)
	946	\|=(% style="width: 161px;background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 204px;background-color:#4F81BD;color:white" %)Function\|=(% style="width: 97px;background-color:#4F81BD;color:white" %)Response
70.1	947	\|(% style="width:161px" %)AT+CALCFLAG=1\|(% style="width:202px" %)Set the calculate flag to 1.\|(% style="width:95px" %)OK
	948	\|(% style="width:161px" %)AT+CALCFLAG=2\|(% style="width:202px" %)Set the calculate flag to 2.\|(% style="width:95px" %)OK
32.4	949
32.7	950	(% style="color:#4f81bd" %)Downlink Command:
32.4	951
71.1	952	* Example: 0XA501 ~/~/ Same as AT+CALCFLAG=1
32.4	953
78.1	954	== (% data-sider-select-id="e738628a-6dac-4911-8e57-1c07617a3bde" %)3.7 Set count number(%%) ==
32.4	955
64.3	956
32.4	957	Feature: Manually set the count number
	958
64.3	959
54.8	960	(% style="color:#4f81bd" %)AT Command: AT+SETCNT
32.4	961
75.3	962	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:481px" %)
	963	\|=(% style="width: 162px;background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 224px;background-color:#4F81BD;color:white" %)Function\|=(% style="width: 95px;background-color:#4F81BD;color:white" %)Response
71.1	964	\|(% style="width:162px" %)AT+SETCNT=0\|(% style="width:222px" %)Set the count number to 0.\|(% style="width:93px" %)OK
	965	\|(% style="width:162px" %)AT+SETCNT=100\|(% style="width:222px" %)Set the count number to 100.\|(% style="width:93px" %)OK
32.4	966
32.8	967	(% style="color:#4f81bd" %)Downlink Command:
32.4	968
71.1	969	* Example: 0xA600000001 ~/~/ Same as AT+SETCNT=1
	970	* Example: 0xA600000064 ~/~/ Same as AT+SETCNT=100
32.10	971
	972	== 3.8 Set work mode ==
	973
64.3	974
32.10	975	Feature: Manually set the work mode
	976
64.3	977
54.8	978	(% style="color:#4f81bd" %)AT Command: AT+MOD
32.10	979
75.3	980	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:463px" %)
	981	\|=(% style="width: 162px;background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 193px;background-color:#4F81BD;color:white" %)Function\|=(% style="width: 108px;background-color:#4F81BD;color:white" %)Response
32.10	982	\|(% style="width:162px" %)AT+MOD=0\|(% style="width:191px" %)Set the work mode to 0.\|(% style="width:106px" %)OK
70.1	983	\|(% style="width:162px" %)AT+MOD=1\|(% style="width:191px" %)Set the work mode to 1\|(% style="width:106px" %)OK
32.10	984
	985	(% style="color:#4f81bd" %)Downlink Command:
	986
71.1	987	* Example: 0x0A00 ~/~/ Same as AT+MOD=0
	988	* Example: 0x0A01 ~/~/ Same as AT+MOD=1
32.10	989
68.3	990	= 4. Battery & Power Consumption =
32.11	991
	992
68.3	993	SW3L uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
64.3	994
68.3	995	[[Battery Info & Power Consumption Analyze>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
32.11	996
	997
32.12	998	= 5. FAQ =
	999
	1000	== 5.1 How to use AT Command to configure SW3 ==
	1001
64.3	1002
32.12	1003	SW3L UART connection photo
	1004
65.1	1005	[[image:1652943554687-149.png\|\|_mstalt="298155" height="354" width="724"]]
32.12	1006
50.25	1007
35.3	1008	(((
32.12	1009	In the PC, you need to set the serial baud rate to (% style="color:green" %)9600(%%) to access the serial console for LSN50. LSN50 will output system info once power on as below:
35.3	1010	)))
32.12	1011
65.1	1012	[[image:1652943563580-704.png\|\|_mstalt="295191" height="504" width="720"]]
32.12	1013
50.26	1014
32.12	1015	== 5.2 How to upgrade the firmware? ==
	1016
64.3	1017
35.4	1018	(((
32.12	1019	A new firmware might be available for:
35.4	1020	)))
32.12	1021
35.4	1022	* (((
	1023	Support new features
	1024	)))
	1025	* (((
	1026	For bug fix
	1027	)))
	1028	* (((
	1029	Change LoRaWAN bands.
	1030	)))
32.12	1031
35.4	1032	(((
65.1	1033	Instruction for how to upgrade: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome\|\|anchor="H2.HardwareUpgradeMethodSupportList" _mstmutation="1"]]
35.4	1034	)))
32.12	1035
35.4	1036	(((
66.3	1037	Firmware location: [[https:~~/~~/www.dropbox.com/sh/jktldt8q674i87l/AADqk1zoUEekCjDR_4ic2Tg0a?dl=0>>https://www.dropbox.com/sh/jktldt8q674i87l/AADqk1zoUEekCjDR_4ic2Tg0a?dl=0]]
35.4	1038	)))
32.12	1039
	1040
	1041	== 5.3 How to change the LoRa Frequency Bands/Region? ==
	1042
64.3	1043
61.1	1044	Users can follow the introduction for how to upgrade images. When downloading the images, choose the required image file for download.
50.29	1045
61.1	1046
62.1	1047	== 5.4 Can I connect 3rd party flow sensor other than the default one? ==
61.1	1048
64.3	1049
67.11	1050	If a user wants to connect SW3L to a 3rd party flow sensor such as a [[DN50 flow sensor>>https://valvesdirect.net/product/flow-sensor-2-inch-15-400lpm/]], that is possible. A flow sensor with pulse output is needed.
61.1	1051
67.11	1052	(% style="background-color:yellow" %)Below is the notice for the connection:
61.1	1053
67.11	1054	~1. Connect the 3rd party flow meter to the pulse input and GND of SW3L.
	1055
	1056	2. Make sure the pulse output voltage of 3rd party flow sensor is less than 5v.
	1057
	1058	3. It is not recommended to use SW3L to power the external flow meter, unless you are sure the external flow sensor is low power ( several uA). Otherwise the battery of SW3L will be running out soon.
	1059
	1060	4. After connection, user needs to set the [[Calculator Flag and change the payload>>\|\|anchor="H2.3.3A0WaterFlowValue2CUplinkFPORT3D2"]] so to get the correct reading in the platform.
	1061
	1062
65.1	1063	[[image:image-20220614233814-2.png\|\|_mstalt="429949" height="280" width="383"]]
64.4	1064
61.1	1065
34.3	1066	= 6. Order Info =
	1067
64.3	1068
67.12	1069	Part Number: (% style="color:#4f81bd" %)SW3L-XXX-YYY
34.3	1070
67.12	1071	(% style="color:#4f81bd" %)XXX(%%): The default frequency band
34.3	1072
74.3	1073	* (% style="color:red" %)AS923(%%): LoRaWAN AS923 band
	1074	* (% style="color:red" %)AU915(%%): LoRaWAN AU915 band
	1075	* (% style="color:red" %)EU433(%%): LoRaWAN EU433 band
	1076	* (% style="color:red" %)EU868(%%): LoRaWAN EU868 band
	1077	* (% style="color:red" %)KR920(%%): LoRaWAN KR920 band
	1078	* (% style="color:red" %)US915(%%): LoRaWAN US915 band
	1079	* (% style="color:red" %)IN865(%%): LoRaWAN IN865 band
74.2	1080	* (% style="color:red" %)CN470(%%): LoRaWAN CN470 band
64.3	1081
34.4	1082	(((
34.3	1083	(% style="color:#4f81bd" %)YYY(%%): Flow Sensor Model:
34.4	1084	)))
34.3	1085
74.2	1086	* 004: DW-004 Flow Sensor: diameter: G1/2” / DN15. 450 pulse = 1 L
	1087	* 006: DW-006 Flow Sensor: diameter: G3/4” / DN20. 390 pulse = 1 L
	1088	* 010: DW-010 Flow Sensor: diameter: G 1” / DN25. 64 pulse = 1 L
	1089	* 020: DW-020 Flow Sensor: diameter: G 2” / DN50. 12 pulse = 1 L
34.3	1090
34.4	1091	= 7. Packing Info =
	1092
64.3	1093
34.4	1094	Package Includes:
	1095
	1096	* SW3L Water Flow Sensor x 1
	1097
	1098	= 8. Support =
	1099
64.3	1100
34.4	1101	* (((
	1102	Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
	1103	)))
	1104	* (((
	1105	Provide as much information as possible regarding your inquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
66.3	1106
	1107
	1108
	1109
34.4	1110	)))

Wiki source code of SW3L -- LoRaWAN Outdoor Flow Sensor

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