Pressure Monitor LoRaWAN

Version: 2.0.0

Product Description

The Aqua-Scope pressure sensor detects water consumption, and leaks by analyzing pressure waves in the water supply. It continuously records the temperature, the water consumption, and water pressure. When leaks are detected or when pressure or temperature thresholds are exceeded or not reached, the user is alerted wirelessly. The device consists of two parts:

The sensor can send an alarm message when predefined threshold values are exceeded or not reached. The polling frequency of the sensor is adjustable between 0.1 seconds and several minutes, defining the battery life. For a measurement interval of 1 second, a battery life of approximately 10 years is calculated.

The device can be powered either by an external power supply with a USB-C adapter or by an optional internal ER26500 battery (Bobbin Cell C). Both the sensor head and the main housing are waterproof, allowing them to be used outdoors or in particularly damp and/or dirty environments.

The device is controlled via LoRaWAN commands and operates as a LoRaWAN Class A/C device. The use of the device requires LoRaWAN network coverage. Otherwise, you need to install and operate your own LoRaWAN gateway.


The Aqua-Scope sensor head must be connected to a single point in the house's piping system. Ideal connection points are angle valves located under sinks or next to toilets. Other options include 1/4-inch access openings at the pressure reducer, shut-off valves, or other installation devices. It is recommended to choose the lowest possible point in the apartment (ideally in the basement or on the first floor).

Attention! If a pressure reducing valve (PRV) is installed, the Aqua-Scope monitoring device must be installed between the pressure reducer and the individual outlets. If no PRV is present, the device can be installed anywhere, but the accuracy of the measurements will be lower. Details can be found in the section "Impact of Pressure Reducer."

To keep it short and simple, the video at explains the installation of the Aqua-Scope water monitor step by step:

  1. If two angle valves are present under the sink, please identify the cold water supply. Simply open hot water and check which valve warms up.
  2. Close the tap and shut off the angle valve by turning clockwise.
  3. Remove the metal hose from the angle valve with the provided 19mm wrench. Have a towel ready to catch the water coming out of the end of the hose.
  4. Attach the T-shaped connector to the top of the angle valve and secure it with the 19mm wrench.
  5. Connect the metal hose to the top of the connector and secure it with the 19mm wrench.
  6. Screw the Aqua-Scope pressure sensor head into the side opening of the connector and secure it by hand. It is not necessary to tighten it too much.
  7. Open the angle valve again by turning the knob counterclockwise.
  8. Check all three connections for leaks for a few seconds.
  9. Attach the Aqua-Scope to a suitable location with double-sided tape and connect the sensor head to the main device. Insert the flood sensor into the audio jack if necessary.
  10. Turn on the device using the USB-C power plug. Please use the included power supply. This power supply has a very low harmonic distortion, which is necessary for precise measurements. Alternatively, insert a battery.

Connection to LoRaWAN Network

This device, with its three keys (Dev EUI, Join EUI, Join Key), needs to be registered with a LoRaWAN network operator that covers the device's location with radio signals.

If you purchased the device directly from Aqua-Scope's online shop, use the email address used for the purchase and the public device key (Dev EUI) on the website You will receive a message with all three keys to the provided email address. The public key is also printed on the device as a 16-digit number and as a QR code for scanning. The QR code and 16-digit number are also printed on the outer packaging.

If you purchased the device from a dealer, the dealer will provide the three keys. If they do not, please contact by email.

Immediately upon inserting the batteries or connecting a power supply, the device will attempt to connect to the LoRaWAN network using the three keys you provided. The LEDs will blink during this process. After approximately 25 seconds, this process, called 'JOIN,' will either be successful or aborted. In the latter case, the device immediately enters sleep mode.

If, for any reason, the sensor loses connection to the server, an automatic reconnection process, called 'Rejoin,' will take place. This process repeats whenever the device attempts to send a message to the LoRaWAN network.

Pressing the button always initiates a LoRaWAN communication, leading to a 'Rejoin' as explained above. Please observe the Duty Cycle regulation—sending messages or Rejoins too quickly in succession may be ignored by the LoRaWAN network.

Device Operation

Remote Access

The device is accessible via LoRaWAN commands. lease consult your LoRaWAN provider for details how to access the data. Please refer to the sections below for information on the payload and the payload decoding.

Measurement Values and Alarms

The device measures the pressure and temperature of the water in the pipe where the sensor is installed multiple times per second.

The following alarms are possible:

  1. One of the wired or wireless flood sensors has detected water. This is typically triggered by a leak near the respective sensor.
  2. The water pressure has risen above the threshold set in the app or through configuration parameter 6. The reason for this alarm could be malfunctions of a pressure reducer or backflow preventer to the hot water system.
  3. The water pressure has fallen below the threshold set in the app or through configuration parameter 7. The reason for this could be a pipe break; however, the water may have simply been turned off.
  4. The external sensor is not connected to the main device.
  5. The external sensor is connected to the main device but not connected to a pressurized water line.
  6. The water temperature has either fallen below the value set in the app or configuration parameter 11 or risen above the value in the app or configuration parameter 16.

The alarm is transmitted to the LoRaWAN network. If the condition that triggered the alarm has been resolved, the alarm will be automatically cleared. It is also possible to clear the alarm by double-clicking on the monitor's button, even if the alarm condition has not been resolved. The alarm will then remain locked until the next power-on.

Sensor Data

The sensor measures water pressure, and water temperature, and sends the values every 15 minutes, along with operating time, battery consumption, and battery voltage, via LoRaWAN.

LED Indicator

The device features a tricolor LED (red/green/yellow) to signal different operational states. The LEDs only remain continuously lit when powered by an external source. In battery mode, the LEDs remain off after the startup sequence to conserve power.

Button Operation

By pressing the button once, twice, or three times in quick succession, the following functions can be activated:

Note: In battery mode, the button must be held down for about 1 second (until the green LEDs light up) to wake up the device. Afterward, the second and third clicks can be performed as needed.

Battery Operation

The sensor can be operated with an external power supply, a battery, or both simultaneously. The status at the moment of powering on defines the device's operating mode. If mains voltage is present at the moment of powering on, the device will remain in power mode until the next status report (default every 15 minutes), even if mains voltage fails and a battery is inserted. The battery then operates as a backup.

If the sensor is started by inserting a battery, it will switch to battery mode. This means that some sensor functions are shut down to save power:

An estimate of battery life can be found in the app under "Devices". With a pressure reducer, the battery lasts about 8 to 10 years, without a pressure reducer in the water pipe, the lifespan is about 4 years.

LoRaWAN Payload Commands (Payload Format)

LoRaWAN commands can be daisy chained into the payload up to the defined maximum payload size of 51 bytes. This mean that for all commands sent to defined number of bytes in the payload is required to avoid misinterpretation of command and/or command values in the receiver side. All uplink and downlink commands use FPort=10.

LoRaWAN Sensor Types

The following sensor types are supported by the Aqua-Scope Monitor.

LoRaWAN Alarm Types

The following alarmtypes are supported by the Aqua-Scope Monitor.

LoRaWAN Configuration Parameters

All Configuration Parameters are 2 Byte values that can be set and read out using LoRaWAN 'Configuration Get' and 'Configuration Set' commands. Here is an overview of the configuration parameters currently used:

Parameter 1 (0x01): System Register (Default: 0x5bfe = dec 23550)

The bitmap defines the general behavior of the device. Bit = 1 means function enabled, bit = 0 means function disabled.

When High-Frequency Bit set to 1: 4 MSB defines interval in 2 * ms from 2 -32 ms (val 1 - 16).
When High-Frequency Bit set to 0: 4 MSB defines interval as 125 ms power of x, ranging from x = 1 = 125 ms to x = 14 = 2048 sec = 34 min , x=15 is not allowed.

Parameter 3 (0x03): LoRaWAN Register (Default: 0x0ffd = dec 4093)

The bitmap defines which commands are accepted on the LoRaWAN communication channel. Bit = 1 means function enabled, bit = 0 disables function

The upper 16 Bit of the register are not accessible via LoRaWAN but from serial console or WIFI only (whatever is available):

Parameter 6 (0x06): Over-Pressure Alarmthreshold (Default: 0x1f40 = dec 8000)

An overpressure alarm is sent as an uplink message when the current pressure exceeds this threshold. The threshold value is automatically set 24 hours after initial setup during calibration and may change from time to time as a result of ongoing calibration. The value is accepted in mBar.

Parameter 7 (0x07): Under-Pressure Alarm threshold (Default: 0x07d0 = dec 2000)

A heavy flow alarm is sent as an uplink message when the current pressure falls below this threshold for a certain time. The threshold value is automatically set 24 hours after initial setup during calibration and may change from time to time as a result of ongoing calibration. The value is accepted in mBar.

Parameter 19 (0x13): Alarm Enable/Disable (Default: 0xd806 = dec 55302)

The bitmap defines which alarm type is active and will cause an alarm status command 0x0b. Bit = 1 means function enabled, bit = 0 disables the function. The different alarm types are shown in the section 'LoRaWAN Alarm Types'.

Parameter 29 (0x1d): Reporting Interval (Default: 0x0384 = dec 900)

This parameter defines the interval in seconds the device automatically reports sensor values and heartbeat as an uplink message.

Scope of Delivery

Information related to Drinking Water Directive EU 98/83/EC

The t-shaped part of the device is exposed to drinking water and therefore subject to the European Drinking Water Directive. The certified used material is called CW509L, which is in the list of approved of materials of the German Environment Agency (UBA) in the version from May 14th, 2020 under section

Technical Data

Support and Contact

Should you encounter any problem, please give us the opportunity to address it before returning this product. Please check our website and particularly the support section for answers and help. You can also send a message to

While the information in this manual has been compiled with great care, it may not be deemed an assurance of product characteristics. Aqua-Scope shall be liable only to the degree specified in the terms of sale and delivery. The reproduction and distribution of the documentation and software supplied with this product and the use of its contents is subject to written authorization from Aqua-Scope. We reserve the right to make any alterations that arise as the result of technical development.

Declaration of Conformity

Aqua-Scope Technology OÜ, Sakala 7-2, 10141 Tallinn, Republic of Estonia, declares that this radio emitting device works on the following frequences:

Български С настоящото Aqua-Scope Technology OÜ декларира, че този тип радиосъоръжение PRELWE02 е в съответств ие с Директива 2014/53/ЕС. Цялостният текст на ЕС декларацията за съответствие може да се намери н а следния интернет адрес:

Čeština Tímto Aqua-Scope Technology OÜ prohlašuje, že typ rádiového zařízení PRELWE02 je v souladu se směrnicí 2014/53/EU. Úplné znění EU prohlášení o shodě je k dispozici na této internetové adrese:

Dansk Hermed erklærer Aqua-Scope Technology OÜ, at radioudstyrstypen PRELWE02 er i overensstemmelse med direktiv 2014/53/EU. EUoverensstemmelseserklæringens fulde tekst kan findes p følgende internetadresse:

Deutsch Hiermit erklärt Aqua-Scope Technology OÜ, dass der Funkanlagentyp PRELWE02 der Richtlinie 2014/53/EU entspricht. Der vollständige Text der EU-Konformitätserklärung ist unter der folgenden Internetadresse verfügbar:

Eesti Käesolevaga deklareerib Aqua-Scope Technology OÜ, et kesolev raadioseadme tp PRELWE02 vastab direktiivi 2014/53/EL nuetele. ELi vastavusdeklaratsiooni tielik tekst on kttesaadav jrgmisel internetiaadressil:

English Hereby, Aqua-Scope Technology OÜ declares that the radio equipment type PRELWE02 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address:

Español Por la presente, Aqua-Scope Technology OÜ declara que el tipo de equipo radioeléctrico PRELWE02 es conforme con la Directiva 2014/53/UE. El texto completo de la declaracin UE de conformidad está disponible en la direccin Internet siguiente:

Ελληνικά Με την παρούσα ο/η Aqua-Scope Technology OÜ, δηλώνει ότι ο ραδιοεξοπλισμός PRELWE02 πληροί την οδηγία 2014/53/ΕΕ. Το πλήρες κείμενο της δήλωσης συμμόρ φωσης ΕΕ διατίθεται στην ακόλουθη ιστοσελίδα στο διαδίκτυο:

Français Le soussigné, Aqua-Scope Technology OÜ, déclare que l'équipement radioélectrique du type PRELWE02 est conforme la directive 2014/53/UE. Le texte complet de la déclaration UE de conformité est disponible l'adresse internet suivante:

Hrvatski Aqua-Scope Technology OÜ ovime izjavljuje da je radijska oprema tipa PRELWE02 u skladu s Direktivom 2014/53/EU. Cjeloviti tekst EU izjave o sukladnosti dostupan je na sljedećoj internetskoj adresi:

Italiano Il fabbricante, Aqua-Scope Technology OÜ, dichiara che il tipo di apparecchiatura radio PRELWE02 conforme alla direttiva 2014/53/UE. Il testo completo della dichiarazione di conformit UE disponibile al seguente indirizzo Internet:

Latviešu Ar šo Aqua-Scope Technology OÜ deklarē, ka radioiekārta PRELWE02 atbilst Direktīvai 2014/53/ES. Pilns ES atbilstības deklarācijas teksts ir pieejams šādā interneta v ietnē: Lietuvių Aš, Aqua-Scope Technology OÜ, patvirtinu, kad radijo įrenginių tipas PRELWE02 atitinka Direktyvą 2014/53/ES. Visas ES atitikties deklaracijos tekstas prieinamas šiuo internet adresu:

Magyar Aqua-Scope Technology OÜ igazolja, hogy a PRELWE02 típus rádiberendezés megfelel a 2014/53/EU irányelvnek. Az EUmegfelelőségi nyilatkozat teljes szövege elérhető a következő internetes címen:

Malti B'dan, Aqua-Scope Technology OÜ, niddikjara li dan it-tip ta' tagħmir tar-radju PRELWE02 huwa konformi madDirettiva 2014/53/UE. It-test kollu tad-dikjarazzjoni ta' konformit tal-UE huwa disponibbli f'dan l-indirizz talInternet li ġej:

Nederlands Hierbij verklaar ik, Aqua-Scope Technology OÜ, dat het type radioapparatuur PRELWE02 conform is met Richtlijn 2014/53/EU. De volledige tekst van de EUconformiteitsverklaring kan worden geraadpleegd op het volgende internetadres:

Polski Aqua-Scope Technology OÜ niniejszym oświadcza, że typ urządzenia radiowego PRELWE02 jest zgodny z dyrektywą 2014/53/UE. Pełny tekst deklaracji zgodnośc I UE jest dostępny pod następującym adre sem internetowym:

Português O(a) abaixo assinado(a) Aqua-Scope Technology OÜ declara que o presente tipo de equipamento de rádio PRELWE02 está em conformidade com a Diretiva 2014/53/UE. O texto integral da declarao de conformidade está disponível no seguinte endereo de Internet:

Română Prin prezenta Aqua-Scope Technology OÜ declară că tipul de echipamente PRELWE02 este în conformitate cu Directiva 2014/53/UE. Textul integral al declarației UE de conformitate este disponibil la următoarea adresă internet:

Slovensko Aqua-Scope Technology OÜ potrjuje, da je tip radijske opreme PRELWE02 skladen z irektivo 2014/53/EU. Celotno besedilo izjave EU o skladnosti je na voljo na naslednjem spletnem naslovu:

Slovensky Aqua-Scope Technology OÜ týmto vyhlasuje, že rádiové zariadenie typu PRELWE02 je v slade so smernicou 2014/53/EÚ. Úplné EÚ vyhlásenie o zhode je k dispozícii na tejto internetovej adrese:

Soumi Aqua-Scope Technology OÜ vakuuttaa, että radiolaitetyyppi PRELWE02 on direktiivin 2014/53/EU mukainen. EUvaatimustenmukaisuusvakuutuksen täysimittainen teksti on saatavilla seuraavassa internetosoitteessa:

Svenska Härmed försäkrar Aqua-Scope Technology OÜ att denna typ av radioutrustning PRELWE02 verensstmmer med direktiv 2014/53/EU. Den fullständiga texten till EUförsäkran om verensstämmelse finns på följande webbadress:

Disposal Guidelines

Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities. Contact your local government for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging health and well-being.