Q: Where can I install the STREGA Smart-Valve?
A: The STREGA Smart-Valve can be used with liquids, compressed air, oil-free or dry neutral gases. Most of our customers use them today for drinking water or cooling water. The valve pipe sections are available from ½” to 3” (DN15..DN80). Larger (and smaller) pipe sections are available on demand.
Q: How many STREGA Smart-Valve can I install on a single project?
A: There is no limitation in the numbers of Smart-Valves in a project. STREGA has conceived the product with the latest IIoT technologies in mind. In this market, one targets millions of sensors to communicate over the Internet. We recommend, however, to use one Gateway every 1000 Smart-Valves.
Q: I need minimal flow when valve is closed, can the STREGA Smart-Valve provide it?
A: Yes. For those countries where full cut-off of water is not allowed by Law, our valve can be obtained with minimal flow (i.e. 50L/h) when in CLOSE conditions.
Q: Do I absolutely need to use a Mobile Telecom Operator to use the STREGA Smart-Valve?
A: No. Depending on the LoRaWAN Gateway brand you selected, the solution can work on both operated LoRaWAN or private LoRaWAN networks.
Q: How do I send an Open or Close command to my STREGA Smart-Valve?
A: there a dozens of way to control the valve whether you are using your own SCADA, wants to pilot through your smartphone via an App or make use of one of the many existing Cloud based platforms. Most Application Servers today are either using MQTT, HTTP, TCP or UDP but we see also conventional polling made to the gateway through industrial protocols like ModBus.
Q: STREGA advises to use the STREGATE LoRa Gateway: can I use another LoRaWAN gateway brand?
A: Yes. The Smart-Valve uses standard LoRaWAN technology with no proprietary protocol overhead: any LoRa gateway will be usable on the STREGA Smart-Valve. CloudGate, Multitech, Kerlink, CISCO, Meshlium,… are valid brands working with our Smart-Valves.
Q: Can the Control Room be aware that someone is trying to control the Smart-Valve at site?
A: Yes. Fraud detection is part of the solution. The STREGA Smart-Valve has a tamper button that immediately triggers an alarm to the Control Room when the enclosure has been opened.
Q: Can anyone control the Smart-Valve from a smartphone?
A: No. The STREGA Smart-Valve uses AES128 encryption to avoid any unauthorized person to control a valve.
Q: How do I know when it is time to change the batteries?
A: The STREGA Smart-Valve and Smart-Emitter design has been made to target ultra-low consumption and 10+years autonomy. The remaining battery power is sent at each transmission.
Q: what is the expected autonomy of the devices ?
A: An accelerating aging lab test made on one single battery (SAFT M20) only, communicating every 2 minutes to the gateway and opening/closing the valve every 5 minutes permited 5000+ operations !
Q: Why is the STREGA Smart-Valve not sensitive to corrosion?
A: The STREGA Smart-Valve is not motorized and fluid is not in direct contact with the mechanical parts. This is particularly important for valves that may stay in the same position during months or years. Other valve’s design may fail prematurely. For instance, for countries where water is coming from desalinated plants, water is difficult to get properly balanced and can create corrosion. Such water will not create any problem on the STREGA Smart-Valve.
Q: What is the maximum pressure allowed in my pipe for the Smart-Valve ?
A: The Smart-Valve is rated PN25 (max. 25 Bars) from DN13 to DN32 sections and PN20 (max. 20 Bars) for larger sections.
Q: How far away can the Smart-Valve be controlled?
A: The distance the Smart-Valve can be controlled via the Gateway will be determined by the environment you are controlling the valve in. Thanks to the LoRaWAN amazing obstacles penetration, we tested more than 15 km (10+mi.) in LOS. In urban areas, we successfully tested more than 3 km passing numerous obstacles. In a building, we could reach 22 floors from the gateway.
Q: How do I modify the settings of the Smart-Valve?
The Smart-Valve configuration and settings can be either modified by the USB port locally or Over-the-air. One can, for instance, modify the frequency of transmissions in Open or in Close mode, change the radio settings, set conditions to automatically Close the Valve according to the time of the day or day of the week, set the alarm treshold for low battery, etc.
Q: can the Smart-Valve work underground?
A: Yes, the LoRaWAN has an amazing obstacles penetration even below ground surface but the exact range will depend on many factors and local tests may need to be done to calculate exact distance.
Q: Can the Smart-Valve perform Open or Close on specific conditions?
A: Yes. The Smart-Valve has some local intelligence to trigger: closing on the detection of a leakage, opening at certain time intervals via its internal schedulers, etc.
Q: Can I control my Smart-Valves over the Internet?
A: Yes. That is the main idea of the whole concept: whatever you decide to work within your private APN or through a mobile operator, the STREGA solution provides top-down secure communication: from the Control Room up to the valve.
Q: How long will the batteries that control the Smart-Valve last?
A: The batteries of the Smart-Valve are designed to last 10+ years, depending upon usage.
Q: On some locations, I have power available, can the Smart-Valve work on external power ?
A: Yes, the Smart-Valve can also work with an external power source from 9 to 60VDC. A micro solar panel can, for instance, be used locally.
Q: Will the Smart-Valve still work if it gets wet?
A: Yes. The Smart-Valve is IP68, which means it can even live underwater if this is required. we are also potting the electronics for extra moisture protection.
Q: How do I know if my Smart-Valve is still working?
A: Even if you decide to slow down the frequency of communication to a minimum, the Smart-Valve is transmitting a daily keep alive message to the Gateway to provide various health status information, signal status, time of last transmission, etc.
Q: Why using LoRaWAN and not SIGFOX for the Smart-Valve?
R: LoRa technology is natively bi-directional and has a better indoor propagation of the radio signal than SIGFOX. SIGFOX is limited in the number of incoming transmissions (max.4xDL/day) and is less secured than LoRaWAN. LoRaWAN is more robust against interferences than SIGFOX. Last but not least, LoRaWAN permits to create its own network without the need of a mobile operator to operate the network.
Q: What frequencies are available for the Smart-Valve ?
A: The Smart-Valve and Smart-Emitters are available in 868MHz (Middle East and Europe), 433MHz (USA, Saudi Arabia, Kuwait,…), 915 MHz (North and South America, Australia), 923 MHz (Australia and New Zealand). Frequency selection has to be made when ordering but we provide a utility to set the sub-frequencies as well. TTN, for instance, requires FSB=2 which can easily be set accordingly.