Frequently Asked Questions

FS 2.55 FAQs

(Support Center | 2.55 Software Release)


  • How does vaping detection work?

    • The FS255 has internal sensor technology to detect if vaping is occurring in a specific location. When detection occurs, a real-time silent message (email and/or text) is sent to one or more subscribers – i.e., a superintendent, principal, security or designated on-duty official.

  • What is the typical coverage area for vaping?
    • In general, each FS255 will cover a 12’ x 12’ area.
  • What about ceiling height?
    • Our qualification testing has focused on 8’ ceilings. Generally, as the ceiling height increases, the effectiveness of the detector will decrease.
  • What are the factors that will impact vaping detection?
    • Bathroom layout, room ventilation, airflow, and location of the device are key factors. Detection is going to be degraded when vaping is done close to open windows or active ventilation such as exhaust fans. An HVAC system could impact the ability to detect vape properly. Also, if they are aware of the detector, some individuals may use counter-measures to avoid system detection – such exhaling vape inside a jacket or coat.
  • What percentage of vaping incidents can I reasonably expect to detect?
    • This is difficult to quantify.  If vaping occurs within the coverage area prescribed, the majority of incidents should be detected with the following qualifiers: active ventilation that redirects the air can degrade vaping detection; intentional counter-measures such as exhaling vape into a coat to prevent vape from reaching the sensor will likely compromise vaping detection performance.

Elevated Sound

  • How can you detect incidents such as bullying without cameras or microphones?
    • Each FS255 continuously measures current sound levels and detects elevated sound, or noise anomalies, that suggest that something is amiss – such as bullying, fighting, or screaming – that should be investigated. When a decibel-level threshold (set by the system administrator) is crossed, a real-time alert is sent to designated school officials. Providing real-time situational awareness allows school officials to address potential harmful or dangerous behavior. Prevention starts with detection. The FS255 can detect and deter bullying when coupled with elevated sound.
  • What is the typical coverage area for bullying?
    • Provided there are no walls or barriers in between the sound source and the sensor, sound waves generally propagate well. We recommend an area of 20’ x 20’ per FS255.  However, the coverage area for vaping detection is smaller, and the number of FS255 units will generally be driven by the coverage requirement for vaping detection.
  • What about ceiling height?
    • The overall acoustics of the location is important. Generally, ceiling height is more of a limiting factor for effective vaping detection rather than elevated sound that suggests bullying or fighting.
  • What percentage of incidents such as bullying can I reasonably expect to detect?
    • It is extremely difficult to quantify this. It is possible that some elevated sound incidents may not be due to bullying or fighting. Conversely, it is possible that a bullying incident goes undetected because students are trying to avoid detection by not making much noise. What we can say is that the FS255 will consistently and accurately detect elevated sound incidents that suggest something is amiss that requires attention.
  • How do you handle locker rooms, for example, at the end of gym class or after a football game?
    • Yes, school sporting events are played at various times on different days, so there is no way to predict typical noise levels. One approach is to raise the decibel-level threshold for FS255 detectors located in locker rooms – for time periods when higher noise levels are anticipated. Another option is to disable the sound sensor during such periods temporarily. It is up the school staff to investigate and determine if the alert was caused by an incident of harmful or dangerous behavior.


  • Do I need a professional/licensed installer to install the FS255?

    • The installer does not need to be licensed. However, it should be done by a professional who is familiar with installing and configuring IT equipment or data-enabled security equipment.

  • How is the FS255 powered if the school does not have a network switch that supports PoE+ (Power-over-Ethernet Plus)?

    • If input power is not injected into the cable by the on-premise network switch, you need to use a PoE+ injector. Alternatively, you may power the device with external power via an AC-DC transformer. 

  • Beside the FS255 itself, what parts/equipment are needed to install the FS255?

    • In addition to the FS255 itself, common parts and tools – not provided with the unit – are required for mounting. The FS255 has two mounting holes for a bolt/screw to hold the device onto the ceiling. For sheetrock ceilings where there are no studs, a hollow wall anchor and screw can be used. For ceiling tiles, a toggle bolt with anchor can be used. The installer must ensure that the device is held strongly in place to avoid the device falling off. In addition, a hole must also be made on the ceiling for the Ethernet cable and/or barrel jack to plug directly into the device. The PoE+ cable – not provided with the unit –  is inserted into the port on the face of the device that is mounted onto the ceiling. If AC power is used, the power transformer – also not provided with the unit – output is inserted into the barrel jack on the face of the device that is mounted into the ceiling. Please refer to the Device Installation Guide for further details.

  • How many units are required per typical bathroom?

    • Our starter recommendation is two (2) FS255 devices per bathroom for vape detection. Our engineering team is available to perform an assessment to determine if more devices are required. This feedback will be based on the structure of the space, airflow, and room ventilation, as well as the results of live testing.


  • Can I use Wi-Fi for data connectivity?

    • Yes, the FS255 device is Wi-Fi enabled. For instructions of using Wi-Fi, please refer to the Device Installation Guide.

  • What interfaces are supported on the FS255?

    • The FS255 supports Ethernet data connectivity via a built-in, 8-pin RJ-45 connector. It also supports the IEEE 802.3af standard for Power-over-Ethernet Plus (PoE+) and external power via AC-DC transformer.

  • What type of data cables should be used?

    • The same data cables typically used for network hub or switch connectivity. That is standard CAT5 (Category 5) or CAT6 unshielded twisted pair (UTP) cable.

  • What communication ports or resources need to be available for the units to operate?

    • Network administrators should be aware that the units securely send data via the following ports:

      • For Device Communications (alert notifications): Port 11086 (outbound) to IP address

      • For Device Over-the-Air (OTA) Updates: Port 22 (outbound) to IP address

  • How do I add or remove subscribers for alert notifications?

    • At any time, you can log into the cloud-based FlySense™ dashboard to monitor active deployed sensors and manage the list of authorized subscribers for alert notifications. Contact your integration partner or Soter Technologies if you need assistance with this.

  • Can the FS255 be integrated with 3rd party security or management platforms?

    • Yes. There is a published API that allows for such 3rd party integration.

Basic Operation / General

  • What exactly happens when a vaping or elevated sound alert is triggered?

    • When a sensor detects sound decibel level anomalies or chemicals from vaping, it sends an immediate, location-specific notification to the devices of designated school officials.

  • Does the FS255 incorporate a camera or microphone?

    • No, it does not. This allows the FS255 to be effectively deployed in problematic areas such as bathrooms and locker rooms, where privacy precludes the use of cameras and microphones. 

  • Can you configure the software to disable alerts for specific times of day – for example, if someone does not want to receive any alerts between 9:00 pm and 7:00 am?

    • Yes. With the custom scheduling feature, administrators can select specific days and time blocks for subscribes to receive alerts. The system default for subscribers is currently Monday-Friday from 7:00am-4:00pm for all registered devices. You may add, update, and/or edit subscriber schedules within the subscribers’ tab. 

  • Can you improve the FS255 detection performance if you think you are getting too many false positives? 

    • Yes, by classifying each alert - via the portal or mobile app - as a confirmed detection, unconfirmed detection, or false positive, you can help your devices better learn their environment and improve overall detection performance. You can view both vape and sound detection performance over time with real-time success metrics via the portal. 

  • What if the school is only interested in vaping detection?

    • The sound sensor for each detector can easily be disabled via the portal. 

  • What about tampering or attempts by students to disable the unit?

    • The RJ45 connector for data and power is recessed; therefore, there is no cable or connector exposed. The housing is tamper resistance. The unit would have to be literally ripped down from the ceiling. If a unit does become disabled or goes offline, it will be reported via the cloud-based portal.

  • What are the total costs associated with a FS255 solution?

    • The total costs are: FS255 acquisition which includes a one-year warranty; Setup fee; Installation; Annual recurring software subscription fee after year one; Extended warranty/service, which is optional but recommended.

  • Why is there an annual software subscription fee after year one?

    • There is real and ongoing operational cost associated with providing and maintaining the cloud-based infrastructure that enables real-time alert notifications as well as 24/7 access to the FlySense™ portal. The robust, cloud-based portal provides a modern, easy-to-read dashboard and the ability to: configure and manage devices; confirm and classify incidents; view Alert History; run reports; customize subscriber scheduling for alert notifications; and contact Soter Support.


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