ATIM ACW/SF8-WL-I User manual

Versions concerned:
ACW/SF8-WL-I
ACW/LW8-WL-I
ACW/SF8-WL-O
ACW/LW8-WL-O
ACW/SF8-WLL-I
ACW/LW8-WLL-I
Atim Cloud Wireless®
Water Leak Detection
User guide

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ATIM_ACW-WLL_UG_EN_V1.4
SUMMARY
Historic of this document..................................................................................................................................................3
Disclaimer..........................................................................................................................................................................3
Trademarks and copyright.................................................................................................................................................3
Declaration of compliance.................................................................................................................................................4
Environmental recommendations.....................................................................................................................................4
a. Explosive atmosphere 4
b. Environment 4
c. Radio 5
Technical specifications..................................................................................................................................................... 6
a. Features 6
b. Technical features 6
c. Water Leak Sensor 7
a. Mounting 7
b. Identification 7
Available versions..............................................................................................................................................................8
a. Electrodes only 8
b. Simple cable 8
c. Localisation and detection cable 9
d. Wiring accessories 9
e. Cables versions summary 10
Cable setup......................................................................................................................................................................11
Operation ........................................................................................................................................................................13
a. Operating modes 13
b. Product start-up 14
c. Emission of a test frame 15
d. Deep sleep 15
e. Radio module activity 15
f. Battery passivation 15
g. Exploitation Mode 15
h. Alert Frame 15
i. Keepalive Frame 16
j. Options 16
k. IP68 Waterproof version 16

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ATIM_ACW-WLL_UG_EN_V1.4
ACW Configurator ...........................................................................................................................................................16
a. Compatible versions 16
Configuration...................................................................................................................................................................16
Frames format.................................................................................................................................................................18
a. Quick start 18
Test frame...............................................................................................................................................................18
Alert frames............................................................................................................................................................18
End of alert frames .................................................................................................................................................18
a. Full frames details 18
Classic frame...........................................................................................................................................................19
Alert frame..............................................................................................................................................................20
Keepalive frame......................................................................................................................................................21
Test frame...............................................................................................................................................................21
Error frame .............................................................................................................................................................22
Exemple de visualisation des modems sur la nouvelle plateforme ACW 24
Troubleshooting ..............................................................................................................................................................24
Technical support............................................................................................................................................................24

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ATIM_ACW-WLL_UG_EN_V1.4
Historic of this document
Version
Date
Description
Author
Software
version
1.4
18/10/2021
Created from the FR Version.
AJ
1.3
20/09/2021
Update after first Mise à jour après retours clients
AJ
1.2
30/07/2021
Corrections
AJ
1.1
06/05/2021
Accessories addition
FR
1.0
15/04/2021
1st version
FR
0.2
07/04/2021
Corrections
FR
0.1
06/04/2021
Document creation
AJ
Disclaimer
The information contained in this document is subject to change without warning and does not represent a
commitment on the part of ATIM radiocommunications. ATIM radiocommunications provides this document ‘as-is’
with no warranty of any kind, express or implied, including but not limited to implied warranties of merchantability or
fitness for a particular purpose. ATIM radiocommunications may make changes and/or improvements to this manual
or to the product(s) or program(s) described in this manual, at any time.
Trademarks and copyright
ATIM radiocommunications®, ACW ATIM Cloud Wireless® and ARM Advanced Radio Modem® are registered
trademarks of ATIM SARL in France. The other trademarks mentioned in this document are the property of their
respective owners.

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ATIM_ACW-WLL_UG_EN_V1.4
Declaration of compliance
All ACW Atim Cloud Wireless® products comply with the regulatory requirements of the R&TTE Directive (1999/5/EC),
article 3:
1 SAFETY (Article 3.1a of the 1999/5/EC Directive)
NF EN60950-1 Ed. 2006/A1:2010/A11:2009/A12:2011 (health)
EN62479: 2010 (power <20mW) or EN62311:2008 (power > 20mW)
2 Electromagnetic compatibilities (Article 3.1b of the 1999/5/EC Directive)
EN 301489-3 v1.4.1, EN 301489-1 V1.9.2
3 Efficient use of the radio frequency spectrum (Art.3.2 of the 1999/5/EC Directive)
ETSI EN300 220-2 v2.4.1 and EN300 220-1 v2.4.1
Environmental recommendations
a. Explosive atmosphere
Except for the ACW-ATEX line specifically intended for this purpose, do not use ACW radio modems in the presence of
flammable gases or fumes. Using the equipment in such an environment constitutes a safety hazard.
b. Environment
Respect the temperature ranges for storage and operation of all products. Failing to respect these guidelines could
disrupt device operation or damage the equipment. ACW products in IP65 water- and dust-resistant housings may be
placed outdoors but must not be submerged under any circumstances.
Follow the instructions and warnings provided below to ensure your own safety and that of the environment and to
protect your device from any potential damage.

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ATIM_ACW-WLL_UG_EN_V1.4
General hazard –Failure to follow the instructions presents a risk of equipment damage.
Electrical hazard –Failure to follow the instructions presents a risk of electrocution and
physical injury.
Direct-current symbol
WARNING: do not install this equipment near any source of heat or any source of humidity.
WARNING: for your safety, it is essential that this equipment be switched off and disconnected from
mains power before carrying out any technical operation on it.
WARNING: the safe operation of this product is ensured only when it is operated in accordance with
its intended use. Maintenance may only be performed by qualified personnel.
Waste disposal by users in private households within the European Union. This symbol appears on a
product or its packaging to indicate that the product may not be discarded with another household
waste. Rather, it is your responsibility to dispose of this product by bringing it to a designated
collection point for the recycling of electrical and electronic devices. Collection and recycling waste
separately at the time you dispose of it helps to conserve natural resources and ensure a recycling
process that respects human health and the environment. For more information on the recycling
centre closest to your home, contact your closest local government office, your local waste
management service, or the business from which you purchased the product.
c. Radio
Modems in the ACW line are radio-communication modems that use the ISM (industrial, scientific, and medical) bands,
which may be used freely (at no cost and with no authorization required) for industrial, scientific, and medical
applications.

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ATIM_ACW-WLL_UG_EN_V1.4
Technical specifications
a. Features
INDOOR: ACW/xxx-WL(L)-I
OUTDOOR: ACW/xxx-WLL-O
Build-in alarm + Led + Buzzer (optional)
IP68 enclosure + LED (no buzzer)
Internal antenna
External antenna (+4m wire)
Leak detection using electrode or cable
Leak detection using electrode or cable
Leak localization (+/- 1m) using specific cables
No leak localization
Long life (up to 5 to 10 years)
Long life (up to 5 to 10 years)
b. Technical features
Dimensions
80 x 80 x 35 mm (weight 100g)
Antenna
Integrated (¼ wave)
Temperature
-20°C to +55°C (operation)
-40°C to +70°C (storage)
Encore & Mounting
ABS - Wall
Power supply
1 battery pack Lithium 3,6V / 7,2Ah
Rate
Sigfox: 100bps / LoRa: 300 to 10kbps
Frequency
865 –870 MHz (Europe)
Power
25 mW (14 dBm)
Consumption
Sigfox
LoRa
Mode Tx
25 mA
50 mA
Mode Sleep
5 µA
1 µA
Mode Rx
17 mA
22 mA

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ATIM_ACW-WLL_UG_EN_V1.4
c. Water Leak Sensor
Typical value
Localization precision
+/- 1m
(WLL Only !)
Response time
+/- 5s
Time needed for the water to get
through the cable (independent from
the product response time)
a. Mounting
ACW-WL(L) modems are fixed on a flat wall using the 4 fixing holes available at each
end of the case. For best results, it is recommended to install the case without
environmental obstruction and to place it at a minimum height of 2m. For
information, the antenna is integrated into the box. It must be mounted on a
vertical support or attached to a wall
b. Identification
The product identifier is visible on the outer label on the back of the product, on the inside of the electronic board and
in the status bar of the configuration software.
For LoRaWAN modems the communication keys are automatically given by the network ("Over The Air Activation", or
OTAA pairing).
Each product in the ATIM ACW range has a QR Code label visible either on the side or on the front of the product.
This QR code can be easily read with any 2D barcode reader application on a smartphone.
Reading this code indicates the following information:
ATIM|ACW/LW8-WLL|C.0|190114|1|3.0|5.11|70B3D59BA0008C0A
WL-O
ACW-WLL product label
Datamatrix:
ID Sigfox or DevEUI
LoRaWAN
Serial number product
Product reference:
Sigfox or LoRaWAN version
Sigfox or DevEUI
LoRaWAN ID
Revision number of the
product (hardware and
firmware)

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ATIM_ACW-WLL_UG_EN_V1.4
Interpretation:
ATIM
ACW/LW8-
WL-O
C.0
190114
1
3.0
5.11
70B3D59BA0008C0A
Manufacturer
name
Product
reference
Revision
number
Date of
manufactu
re
Manufactu
ring site
Hardware
version
Application
firmware
version
Sigfox ID
or
DevEUI LoRaWAN
Available versions
a. Electrodes only
In this version, the sensor can detect a leak just under itself like in this
picture.
It must be placed to get the electrodes right above the floor
REF: ACW-WL-I
b. Simple cable
In this version, the product is using a water sensible cable and therefore can detect the
presence of water all long the cable.
It’s available in different lengths (3m / 5m / 7m / 15m).

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ATIM_ACW-WLL_UG_EN_V1.4
c. Localisation and detection cable
Using this cable, you can locate the leak by measuring the distance between the device
and the leak with a precision of +/- 1m.
This cable is available in different lengths: 5m / 7m / 10m / 15m and can be connected
to various accessories to monitor several rooms at the same time. Each segment features
a male and a female waterproof connector to be extended easily.
REF: CAB-WLL-3 / 5 / 7 / 15
d. Wiring accessories
Link cable (Device to WLL
cable)
Jumper cable (between
rooms)
End of line stub.
Fixation clips
CAB-WL-LEAD
CAB-WL-JUMP
CAB-WL-TERM
CAB-WL-CLIPS
Fixation clips
Dimensions: 37 x 21 x 8mm
Fix: bonded or screwed (2 holes 4mm, center distance 22mm)
Materials: flexible plastic + 2 stickers

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ATIM_ACW-WLL_UG_EN_V1.4
e. Cables versions summary
Detection cable for ACW/WL
[€/meter for cable]
CAB-WL
3 meters cable for detection + localization
CAB-WLL-3
5 meters cable for detection + localization
CAB-WLL-5
7 meters cable for detection + localization
CAB-WLL-7
15 meters cable for detection + localization
CAB-WLL-15
Link cable between ACW/WLL and cable CAB-WLL-xx
CAB-WL-LEAD
Jumper cable to be connected between two CAB-WLL-xx
CAB-WL-JUMP
End of line plug to be connected on the last CAB-WLL-xx cable
CAB-WL-TERM
Fixing clips for detection cable (100 pcs)
CAB-WL-CLIPS

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ATIM_ACW-WLL_UG_EN_V1.4
Cable setup
Installation examples
Jumper cables are unresponsive to water presence
Be careful! Never loop a cable on itself nor create contact points with conductive material, it might lead to false-
positives!

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ATIM_ACW-WLL_UG_EN_V1.4

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ATIM_ACW-WLL_UG_EN_V1.4
Operation
a. Operating modes
- Exploitation mode: This is the standard mode when the devices start. In this mode the devices send radio frames in
case of water leaks according to the configuration chosen. (If the device has never been configured, the factory settings
are used.
- Deep sleep mode: This mode allows the device to go into a deep sleep (energy saving) from the power up at the
factory until the setup on site. In this mode, no measures, alerts nor radio messages are available.
- Settings mode: This mode is enabled 5 minutes after the exit of the Deep Sleep mode and allow the setup of the
device using Bluetooth (or USB) with the PC software. Radio frames are sent every minute (total 5 frames) to check if
the device is working well.After those 5 minutes, the device goes into Exploitation mode and the Bluetooth is disabled.
(It can be re-enabled via Downlinks)
- Network peering mode: This mode is active when the device quits the Deep Sleep Mode et allow the connection to
the Sigfox or LoRa network.
- Fault mode: This mode stops the normal routine of the device when a critical event happens. The reasons of this
event are diverse:
- Low Battery (< 2.2V)
- Error on the radio module
- Error during the automated tests
- Error in the software
The entry in the Fault mode is shown by a RED LED blinking of the product.
If the error does not come from the radio module, the product will send 3 radio frames every 24 hours containing the
error code (s) (see Frames format for error codes). In addition, the product will emit a luminous warning depending
on the nature of the event.
Once in this mode, the module must be restarted (by disconnecting and reconnecting the battery or by command in
Downlink) to return to its normal operation.
At any time, it is possible to identify which mode the product is in by bringing a magnet close at least for 2 seconds to
the diamond mark on the case. The product led will light up in one of these colors depending on the mode:
for operating mode
for configuration mode
for deep sleep mode
for fault mode
for network pairing mode

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ATIM_ACW-WLL_UG_EN_V1.4
b. Product start-up
In most cases, the ACW-WLL is started up before delivery (battery packs already connected) and then placed in deep
standby to limit consumption.
To place the product in its operating mode, bring a magnet close to the diamond-shaped marking on the box for 6
seconds. During these six seconds, the product led must flash in WHITE then in GREEN at the end of the six seconds to
indicate that the product is on the way.
The ACW then enters the network pairing phase. During this phase, a FUSCHIA light signal with a fading effect indicates
that the search phase is in progress.
If the connection is successful, the product will emit a light signal depending on the quality of the network:
•GREEN led signal: good network quality
•YELLOW led signal: medium network quality
•ORANGE led signal: bad network quality
•WHITE led signal: no information on the network quality
The module will then enter its operating mode and start feeding information back to the network according to the
configuration.
Particular Case
•For a Sigfox device
oFor information on the quality of the Sigfox, it is necessary to provision a Downlink. It is this one which
will make it possible to decide on the quality of the network. The product emits at startup a test Uplink
described in the chapter Classic frame (frame type 0x02). If a Downlink is provisioned, the information
on network quality will then be relayed by the ACW (light signal). If no Downlink is provisioned, the
ACW will always display a WHITE light signal.
oIf a WHITE light signal at the end of 5 minutes of the pairing phase is emitted by the product AND a
Downlink has been provisioned, this therefore means that the Network is not accessible.
oIf a WHITE light signal at the end of the 5min pairing phase is emitted by the product WITHOUT a
Downlink having been provisioned, this has no meaning for the quality of the network. The quality of
the network can be good as well as bad (or non-existent).
•For a LoRaWAN device
oIn the default LoRaWAN Class A operating mode, (see chapter Radio Parameters), if at the end of the
5 minutes of the pairing phase, no network has been reached, then the product goes into standby and
will restart a pairing phase of 5 minutes 24 hours later. So, if the product is placed in an area not yet
covered by a network, the product will join it when connectivity is possible. There is no need to
intervene on the product for it to join the network.
oIn the LoRa / LoRaWAN Repeater Compatibility operating mode, (see chapter Radio Parameters), if at
the end of the 5 minutes of the pairing phase, no network has been reached, then the product emits
a WHITE light signal and enters its nominal operating mode. Even if no network has been reached, it
is assumed with this mode that an ATIM LoRa / LoRAWAN repeater located nearby will be able to

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ATIM_ACW-WLL_UG_EN_V1.4
repeat the Local frames sent by the product in LoRAWAN frame on the network that the repeater will
have joined.
c. Emission of a test frame
When the product is in its operating mode (and only in this mode), it is possible to send a test frame including a
measurement sample (which avoids waiting for the next measurement frame).
To do this, simply bring the magnet closer until the GREEN light signal goes out. The successful sending of the test
frame will be indicated by a CYAN light signal.
Before the sending of the frame, a leak detection is done, and the value of this measure is put into the frame. This
allows the user to check the working condition of the electrodes/cable. Those test frames are the same as the regular
alert frames (See the frames structures in «Alert Frames»). In the case of a basic yellow cable. The measured value
should be around zero.
d. Deep sleep
When transporting or storing the ACW-WLL, it is best to place it in its deep standby mode to limit unnecessary energy
consumption.
From any operating mode (except fault mode), bring a magnet near the diamond marking on the box for 6 seconds.
During these six seconds, the product led will flash in the color corresponding to the operating mode, then the end of
the sequence will be indicated by a WHITE fade acknowledging that the product has been put on standby. The magnet
can therefore be removed.
e. Radio module activity
Any sending of a radio frame is indicated by three brief GREEN flashes of the LED.
f. Battery passivation
The ACW-WLL incorporates a battery depassivation feature, to limit the phenomenon of battery passivation during
prolonged phases of deep standby. This feature is automatically activated as soon as the product goes into its deep
sleep mode. The product will then be awakened once a day to start the battery depassivation sequence, then the
product will return to deep standby by itself.
g. Exploitation Mode
The sensor ACW-WLL measure periodically the electrical resistance between the 2 electrodes or the 2 wires of the
cable in order the detect the presence of water and send and alarm on the LoRa / Sigfox networks in case of positive
result.
h. Alert Frame
This frame is sent as soon as the sensors detects water. See below

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ATIM_ACW-WLL_UG_EN_V1.4
i. Keepalive Frame
Those frames are sent whether every day or whether 4 days (see configuration).
Default setup is « every day ».
j. Options
A buzzer can be added inside the product to emit a sound signal when a leak is detected (~ 100dB)
k. IP68 Waterproof version
There is a specific version of the ACW-WL dedicated to underground water leaks (especially used in urban
heating/cooling networks)
The sensor can therefore in area where it can be immersed. On this version the antenna is located outside the sensors
and must be placed outside the immersed area. There is no buzzer on this version.
REF PRODUIT: ACW-WL-O (Outdoor)
ACW Configurator
a. Compatible versions
ACW-WL Software version
ACW Configurator version
Sigfox: V0.0.1
LoRaWAN: V0.0.1
V5.2.2 or more
Téléchargez et installez le logiciel de configuration ‘’setupACW.exe‘’ à l’adresse :
https://www.atim.com/en/products-configurator/
Configuration
The configuration is done via USB or Bluetooth. In case of Bluetooth, the device must be restarted, this one should
appear in the devices list on the main page of the configurator. Double click on it to open the ACW-WL related page.

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ATIM_ACW-WLL_UG_EN_V1.4
⚫Mode: Select the sensor used (Electrode or Cable)
⚫Threshold: Set the sensors threshold for water detection. It must be set according received values in the test
frames. If the devices trigger the alarm without real water leak.
During the installation of the device, plunge the cable / electrodes into water to emulate a water leak and power
on the device to send test frames. Read the received values and then do the same steps in a dry environment. Set
the Threshold according to:
For cable: Dry value < Threshold < Immersed value
Electrodes: Dry value > Threshold > Immersed value
⚫Check period (s): Time span between 2 measures. The more this setting is short, the more the device will be
reactive, but the autonomy will drop. (Default 60s)
⚫Buzzer: Enabled/Disable the alarm when a leak occurs.
⚫Alarm Duration (s): Duration of the sounding alarm.

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ATIM_ACW-WLL_UG_EN_V1.4
Frames format
a. Quick start
Here are the most used frames when using the ACW-WLL. If more detail is needed, keep reading the next pages,
Test frame
Sent when the device starts, right after it joins the network:
0x854A0000xxxx
With xxxx the measured value from the sensor. On a test frame it must be close to 0 when using electrodes, or close
to 0x6YY (YY = any value) when using a cable.
Alert frames
Sent when a water leak is detected.
0x8D4A0000xxxx
With xxxx the sensor’s measured value.
End of alert frames
Sent after an alert when no more water is detected.
0x8D0A0000xxxx
With xxxx the measured value.
a. Full frames details
Generic frame structure:
Uplink frame
Byte 1
Byte 2
. . .
Byte n
Header
Specific data
We can differentiate three types of frames:
⚫Classic frame; New generation: Very close to the old frames, the difference is that you can activate the
timestamp. These are for example the life frame, the error frame, the response to configuration frames, ... These
last frames are common to all ACWs but, it is also possible to have other independent frames for each ACWs.
⚫Measurement frame; New generation: These frames consist of samples of the different values of each of the
channels that an ACW can read. Beforehand, the number of samples and the depth of the history will be inserted
in the header.
Note: The number of samples and the depth of the history are in common for all the channels of the frame.

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ATIM_ACW-WLL_UG_EN_V1.4
Alert frame (threshold crossing); New generation: These frames combine a conventional frame and a measurement
frame. They consist of a header warning that a threshold has been exceeded, followed by samples of each of the
channels for which a threshold has been exceeded.
Classic frame
If the timestamp is enabled, 4 bytes including the timestamp value will be following the header (byte 1). Here are the
different frames types (Bit 0 to Bit 3) :
Frame type
Data size (bytes)
Description
0x00
--
Reserved
0x01
4
Keepalive frame
0x02
0
Downlink request for network testing (Only Sigfox)
0x03
--
Reserved
0x04
--
Reserved
0x05
1
Test frame with counter
0x06
Variable
(Cfg box) Response to a setup frame.
0x07
Variable
(Cfg box) Response to a command frame.
0x08
Variable
(Cfg box) Response to an incorrect frame.
0x09
--
Reserved
0x0a
--
Reserved
0x0b
--
Reserved
Byte 1 - Header
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
New gen = 1
Timestamp =
1 - on
0 - off
Measure
frame = 0
Reserved
= 0
Frame type (see below)