RELEASE NOTES FOR FOLLOWING DEVICES:

SensMax SMX LR
SensMax SMX SLR
SensMax SMX LR TS
SensMax SMX SLR TS
SensMax SMX PRO

v 3.3 (released 16.02.2026)

• Fixed a bug related to saving network settings.

v 3.2 (released 08.09.2025)

• An automatic failover mechanism has been implemented that allows SensWeb devices to switch to a secondary server in the event of a primary server failure.
• Bug fixes and improvements.

v 3.1 (released 29.01.2025)

• Fixed connection to SSID without password
• Fixed data sending to LED screen (for TS devices)

v 3.0 (released 27.11.2024)

• Fixed bug with sensor list sync via MQTT

v2.9 (released 09.10.2024)

• First firmware release for SMX devices

[Download device datasheet]

v 3.9 (release date 08.01.2026)

• Zone Rotation: Implemented support for rotating counting zones.
• Enhanced Zone/Gate Management: Added a new mechanism for creating and editing zones and gates, utilizing button-based position control for higher precision.
• RSA-4096 Support: Updated the security stack to support RSA-4096 certificates.
• UX Refactoring: Relocated wall settings to the "Edit scene parameters" section.
• CSV Logging: Fixed a bug where CSV file writing was blocked until an internet connection was established.
• Resolved an issue where audio notifications failed to trigger in offline mode.
• Bugfix and improvements.

v 3.8 (release date 24 September 2025)

• AWS IoT Support: added support for AWS IoT Core, allowing for seamless and secure integration with the Amazon Web Services cloud platform.
• Bugfix and improvements.

v 3.7 (release date 9 September 2025)

New features

• Microsoft Azure IoT Support: Full integration with the Azure IoT platform.
• MQTT Failover Logic: Added automatic switching between primary and backup SensWeb MQTT servers for enhanced device resilience.

Improvements

• HTTP Server: Improved overall HTTP server performance.
• MQTT Client: Enhanced MQTT client stability and reliability.

Bug fixes

• Fixed an issue that required a restart to apply scene settings on some devices.
• Other minor improvements and fixes.

v 3.6 (release date 9 July 2025)

New features

• Added support for Email reports and notifications.
• Added the ability to send any report file to Telegram or Email.
• All reports are now editable.
• Added a new "Today" report.
• Intelligent counting now works for both gates and all zones, counting the same object only once.
• Added "Object lifetime" presets of 0.2s and 0.5s, useful for scenes with fast-moving objects.
• Added a "ZONE IS EMPTY" trigger for notifications.
• Added LOW POWER SCAN mode (for WP and 4G models only): The radar performs a few scans per second to detect motion. If motion is detected, normal scanning mode is activated.
• Added LOW POWER NETWORK MODE (for WP and 4G models only): Wi-Fi turns on for a few minutes every hour to send data (notifications and single_ts packets are disabled).
• Added automatic calculation of the motion prediction trajectory length.
• New algorithm to determine if an object is inside a zone.

Improvements

• Power consumption in suspend mode (for WP and 4G models only) has been significantly reduced (from 1.2Wh to 0.2Wh).
• Counting algorithms for gates and zones have been fundamentally redesigned for superior performance and precision.
• Increased the sensitivity adjustment range.
• In startup mode, the sensor now tries to connect to Wi-Fi more frequently for 10 seconds after power-on.
• Improved the radar's initialization process for more reliable startups.
• Faster Wi-Fi connection in DHCP mode by remembering the last IP address.
• Active mode can now be enabled across midnight (e.g., from 20:00 to 8:00).
• The notification generation engine has been redesigned for improved speed and reliability.
• Improved "EVERY NEXT" condition notifications; variables are now saved to the SD card, ensuring correct counting after a reboot.
• Refactored MDNS service for lower response times and correct service names in both STA and AP modes.
• OTA server addresses changed from a fixed IP to a domain name.

Bug fixes

• Fixed the startup message notification on Telegram/Email, which was sent immediately after enabling notifications.
• Fixed the "first visitor of the day" notification, which was sent upon creation instead of upon detecting the first visitor.
• Fixed an incorrect value of inside_now in the MQTT single_ts packet.
• Fixed the MAC address being displayed in reverse on the Status web page.
• Fixed the "INSIDE ZONE MORE THAN" notification; you can now set the number of objects to more than 0.
• Fixed a bug related to deleting zones and gates.
• Fixed a device lockout issue; lockout now occurs after 5 incorrect password attempts instead of 2.
• Fixed connection to Wi-Fi networks that have no password.

v 3.5 (release date 17.04.2025)

• Hot fixes for TAC-B 4G model only.

v 3.4 (release date 14.04.2025)

• Hot fixes for TAC-B 4G model only.

v 3.3 (release date 10 April 2025)

• Fixed empty scene displaying when the active period schedule is enabled.
• Improved radar module initialization function for greater stability.

v 3.2 (release date 19 September 2024)

• We have started to expand the settings that can be set via MQTT.
  Now user can manage the reboot schedule, startup sound and LED indication. More settings will be added in next time.
• Minor bug fix.

v3.1 (release date 16 September 2024)

• Silent reboot after scheduled reboot: no startup sound, no notifications.
• Minor bug fix.

v3.0 (release date 12 September 2024)

• Added support for mDNS. It is now possible to connect to the device settings page using a link like "http://[serial_Nr].local" instead of an IP address.
• A full-featured json parser is implemented. Now it is much easier to send commands to the sensor via MQTT.
• Improved MQTT connection stability.
• Added "Reboot schedule" function.
• Added "Reboot Device" button to the settings page.
• Fixed connection to Wi-Fi networks containing spaces.
• Fixed Wi-Fi endless network scan bug.
• Other bug fixes and improvements.

v2.9 (release date 16 January 2024)

• Added possibility to connect by Wi-Fi BSSID.
• Improved Wi-Fi networks scanning. Device can find up to 60 of Wi-Fi networks.
• The scene list now opens to the top, making it easier to select a scene even on a small screen.
• Improved MQTT re-connect function when sensor lost connection with broker.
• Improved calculation of values for zone occupancy information with 5-minutes step.
• Improved the counting algorithm for zones that have "min dwell time" configured.
• Bug fix: option for counting of VEHICLE ONLY is working again.
• Bug fix: the Object count on Home page show correct information now.
• Other bug fixes and improvements.

v2.8 (release date 15 November 2023)

• Smooth display of tracked objects on the settings page.
• Update the settings web page to improve the user experience.
• Tabs have been added to the main page to toggle between the count results and last objects tables.
• Optimized counting algorithms for Passageway zones.
• Improved batch send of many single_ts packets over MQTT.
• Supported MQTT SSL/TLS connection without certificate.
• Added new MQTT packets for displaying of zone occupancy information with 5-minutes step.
• Added new MQTT info packet.
• Fixed a bug from the last release: tracker hangs when sensor is installed with downward tilt.
• For outdoor devices, a car detection scene in the 20-meter range has been added (intended for BETA testing).
• From this version, the simultaneous use of two MQTT brokers is not allowed. The user must select either SensWeb or his own broker.
• Other bug fixes and improvements.

v2.7 (release date 10 October 2023)

• Improved objects tracking and differentiation for all scenes.
• Support for SSL/TLS connection without certificate.
• Bugfix: MQTT packet "5_min_data" was sent to a topic without user prefix.
• Other bug fixes and improvements.

v2.6 (release date 16 August 2023)

• Object tracking bug fix for 3m and 5m scenes.
• Minor fixes.

v2.5 (release date 9 August 2023)

• The list of the last detected objects and their speed is now displayed on the Home page (the function must be enabled on the settings page).
• User can set own DNS server now.
• Obtain DNS settings from DHCP fixed.
• Added the "object id" in MQTT single_ts packet. This allows to track which Gates or Zones were visited by each object.
• Improvements to the counting algorithm for Zones.
• Improvements of notifications for triggers MORE THAN and ANY MOTION.
• Now the 5_min_data packet is sent over MQTT even if there were no visitors.
• Fixed a bug that caused data in reports to be displayed with a 5 minute offset to the future.
• Updates for the settings web site.
• The OUTDOOR devices got the low power settings (active scanning can be disabled according the schedule).
• The Reports tab was missed in v2.4. Now its available again.
• Other bug fixes and improvements.
  
  

v2.4 (release date 24 March 2023)

• Added support of Wi-Fi OPEN networksSensor can now connect to the Free Wi-Fi networks without a password.
• Added displaying of information about the SensWeb subscriptionThe my.sensmax.eu users can now see how many subscription days they have, directly on the sensor settings page.
• Improved counting algorithm for the Gates/Counting linesIn very rare situations, the sensor has simultaneously counted IN and OUT both when single visitor passes through. This has now been fixed.
• MQTT bug fixFixed the incorrect sending of "inside_now" value for Zones.
• Other bug fixes and improvements

v2.3 (release date 4 January 2023)

• Telegram notifications bug fix

v2.2 (release date 3 January 2023)

• Added Telegram notification if MQTT connected or disconnected.
  A disconnection notification is sent if the server has been down for longer than 20 minutes.
• Bug fix
  Fixed: Impossible to set date/time manually.
  Fixed: Cannot create 20 notifications and 10 reports and same time.
  Fixed: Empty objects are shown in MQTT coordinates broadcasting packet.
• Other bug fixes and improvements

v2.1 (release date 19 July 2022)

• Extended CSV reports
  +Added EVERY HOUR, EVERY DAY, EVERY MOTION reports.
  +Added displaying of the report file size.
  +Added a progress bar to display the report downloading status.
• User can select the separator for the CSV file
  It is possible to select COMMA, SEMICOLON or TAB separator.
• Other bug fixes and improvements

v2.0 (release date 27 June 2022)

• Meet the CSV reports
• Now you can create shedule and sensor will record data to Micro SD card in CSV file. You can download this file directly form sensor's web interface.
• Meet WEBHOOKS
• The TAC-B sensor supports webhooks provided by IFTTT and Shelly both.
  Can now record data directly to Google Sheet or switch any load by Shelly relay.
• Added the reset command in MQTT
• User can now reset the sensor via MQTT interface.
• Implemented support of special symbols in passwords and Zone names.
  Now can use symbols ()[]/&=% etc.
• Fixed bug for mutual authentication with 3 certificate files.
• Other bug fixes and improvements.

v1.9 (release date 16 May 2022)

• Completely new HTTP server implemented.
  The web interface no longer freezes even on a weak Wi-Fi connection.
• Double MQTT client allowed.
  The sensor can now send data to SensWeb and the user’s server both at the same time.
• More transport options have been added for MQTT.
  
  The device now also supports:
  + Mutual authentication with 3 certificate files
  + WebSocket
  + WebSocket Secure
  Note: If you are using your own secure MQTT broker, you will need to update user certificates again after this firmware update.
• Meet sound notifications, which are played by sensor's on-board buzzer.
  User can choose one from pre-defined sounds as the action for any notification.
• Meet support of SensMax Telegram BOT.
  This makes it much easier to set up user notifications via Telegram. Just add the @sensmax_bot to any Telegram chat and make it an administrator. After that, the bot will immediately send the chat ID, which need to write in sensor's settings.
• Added the FIRST VISITOR trigger for all notifications. You can now be notified exactly what time your office/shop etc was open.
• If user tries to enter the incorrect unlock password several times, the sensor will be blocked for a few minutes.
• Added Telegram and MQTT notifications if user tries to enter the incorrect unlock password several times.
• User can setup the activity period for every notification.
• User can now edit any notification and set name.
• Bug fix: when Wi-Fi connection lost, device didn't connect again during long time.
• MQTT automatic reconnects every two hours or if any error detected.
• Other improvements.

v1.8 (17 January 2022)

• The passageway zones implemented.
• User can hide any Gate or Zone from displaying on Home page.
• Supporting of user defined prefix for MQTT topics.
• User can now configure port, login and password for MQTT SSL/TLS and TWO-WAY AUTH modes.
• Bug fixes and improvements.

v1.7 (8 December 2021)

• Added "Intelligent counting": the sensor do not count the same object if it crosses the Gate over and over again.
• Added the "Min dwell time" setting for zones. The user can set the minimum time that an object must spend inside Zone in order to be counted.
• Improved counting algorithm for the Gates which are located very close each to other.
• MQTT broadcasting of objects positions: was added location history for every object.
• MQTT broadcasting of objects positions: user can set the broadcasting interval in 100...2000 ms range.
• Redesigned user interface. Added tabs on Settings page.
• Highlight new countings on Home page.
• Bug fixes and improvements.

v1.6 (8 November 2021)

• Prediction of object trajectory implemented.
• MQTT notifications implemented.
• Optimization of Object Scaling function.
• Bug fixes and improvements.

v1.5 (7 October 2021)

• Better recognition of objects when sensor have down tilt.
• Improved sensitivity adjustment logic.
• Improved object scaling adjustment logic.
• Factory reset fix (user gates and zones wasn't cleared after factory reset).
• Fixed bug when Counting Setup page hung if not any gate or zone presented.
• Minor bug fix.

v1.4 (16 September 2021)

• added zones occupancy info to MQTT protocol.
• fixed bug of separate counting pedestrians or cyclists (pedestrians were not counted when PEDESTRIAN ONLY was selected).
• Pedestrian/cyclists separation speed can be adjusted now.
• MQTT support of long names. Server Name and Username can be up to 128 symbols, Password up to 255 symbols (for support of Azure IoT Hub MQTT etc).

v1.3 (18 August 2021)

• Improved Easy Setup algorithm.
• Minor bug fix.

v1.2 (10 August 2021)

• Introducing a simplified adjusting of scene parameters (Easy Setup). These settings now available for every scene.

v1.1 (29 July 2021)

• The effective detecting range now is 10 meters.
• Recognition of fast objects, such as an electric scooter, has been greatly improved.
• Fixed bug with RSA private key import for MQTT.

v1.0 (19 July 2021)

• First release of SensMax TAC-B 3D-W sensor.

RELEASE NOTES FOR FOLLOWING DEVICES:

SensMax Wi-Fi LR
SensMax Wi-Fi SLR
SensMax Wi-Fi LR TS
SensMax Wi-Fi SLR TS
SensMax Wi-Fi PRO

v 3.3 (released 16.02.2026)

• Fixed a bug related to saving network settings.

v 3.2 (released 08.09.2025)

• An automatic failover mechanism has been implemented that allows SensWeb devices to switch to a secondary server in the event of a primary server failure.
• Bug fixes and improvements.

v 3.1 (released 29.01.2025)

• Fixed connection to SSID without password
• Fixed data sending to LED screen (for TS devices)

v 3.0 (released 27.11.2024)

• Fixed bug with sensor list sync via MQTT

v2.9 (released 09.10.2024)

• MQTT support added
• mDNS added. Now able connect to device using link like http://DEVICE_SERIAL.local
• Connected sensors names support
• Edit sensor list re-design
• Improved Wi-Fi networks scanning. Device can find up to 60 of networks.
• Added support of connection by BSSID
• Added "Reboot schedule" function
• Reboot button added to web interface
• Fixed Wi-Fi network scan freeze
• Bud fix and optimization

v 2.8 (released 04.12.2023)

• System optimization and bug fix
  

v 2.7 (released 10.10.2023)

• Support of Wi-Fi networks which contains special symbols in name (*+^ @#$:;!?.,)
• Memory optimization.
  

v 2.6 (released 05.05.2023)

• Daylight saving time bug fix
• Minor bug fix

v 2.5 (released 27.04.2023)

• TS DEVICES: implemented every day auto reset for user reports. Before the display can show incorrect digit when day changed, because user pressed reset button.
• TS DEVICES: improved communications with LED SCREEN.
• Redesigned user interface. Added tabs on Settings page.
• Completely new HTTP server.
• Time/date can be set manually now.
• Added support of WI-FI OPEN networks (without password).
• Added support of SensMax Wi-Fi LR device.
• Added support of SensMax Wi-Fi SLR device.
• Added support of SensMax Wi-Fi PRO device.

v 2.4 (released 29.04.2021)

• Added support of "#" symbol in Wi-Fi name.
• Optimized RAM usage.
• Fixed web pages for Apple devices
• Fixed error when user press Exit tab in menu
• TS DEVICES: Added Reports page and Live Report.
• TS DEVICES: Added support of SensMax LED screen.
  Bug fix.

TAC-B sensor can differentiate objects by speed.
User can setup Gates and Zones to count PEDESTRIANS ONLY, CYCLISTS ONLY, or ANY objects.

The typical speed for pedestrians is around 5 km/h. The average speed of a runner is 5-8 km/h, the only exception being speed running, which is not normally used in everyday life. For a vehicle such as a bicycle or electric scooter, a speed of 8 km/h is not a comfortable ride. Normally, the speed of such objects is 10-20 km/h and higher.

In this way, object speed can be used for robust differentiate objects by type.

Video below demonstartes how to easy setup differentiation for Gates and Zones for TAC-B sensor:

v 1.8 (30 august 2021)

• added the avg occupancy time value in MQTT protocol. This value shows how many time spent every visitor inside zone.
• added total occupancy time of Zone value in MQTT protocol. This value shows how many time the current Zone was occupied during Today.

Press here to download the updated MQTT protocol for TAC-B sensor.

v1.7 (18 august 2021)

• fixed import of two-way certificates for MQTT.
• fixed Custom scene bug (when apply custom scene, sensor make factory reset).
• added TX Power setting for Custom scene.
  This may be useful for small scenes to reduce radar energy. User can set value in dB. Value 0 means max power, and value 10 means min power.

v1.6 (18 may 2021)

• Differentiation of objects by speed implemented. User can select object type for every gate or zone.
• More scenes added for simple counting setup.
• MQTT: sensor translate positions of all detected objects to MQTT every 1 second (this option should be enabled in MQTT settings).
• MQTT: in "single_ts" packet added the speed of object which cross the line at the moment.
• MQTT: user can force sensor to keep data on broker (Retained=1 for all data packets).
• MQTT: added new command which force sensor to send recorded data from selected date to broker.
• Fixed reset to factory settings when user set MQTT login/password to empty.
• Web pages looks correctly on Apple device now.
• Connection to SSID without password now working.
• Other fixes and improvements.
  

v1.5 (14 january 2021)

• Now can adjust the maximum number of objects inside zone for monitoring of social distance violation.
• Auto restart Wi-Fi if no network connection or server connection during 20 minutes.
• Gates and Zones can be deleted from my.sensmax.eu interface (MQTT support added).
• Other known bugs fixed.

v1.4 (8 december 2020)

• WPA2-ENTERPRISE mode support added.
• Social distance monitoring implemented.
• Improved mmWave configuration allows to capture fast objects (up to 35 km/h).
• Added the object speed measurement and display.
• Extended notifications added! You can now configure notifications for different events!
• All stored data from SD card now sends to server automatically if there was no internet connection.
• Occupied zone marked solid blue color. If social distance violation detected, zone marked red.
• Time between Telegram messages is now limited according to Telegram API rules (20 messages per 1 minute max).
• The firmware update status is now shown correctly on Settings page.
• The device locks automatically if there is no user connection during 5 minutes.
• Minimum lenght of Wi-Fi SSID name reduced from 3 symbols till 1 symbol.
• Other known bugs fixed.
  
  

v1.3 (22 october 2020)

• Full sync of GATES and ZONES names between my.sensmax.eu and device.
• Full sync of user settings between my.sensmax.eu and device.
• The beep when crossing function now can be ON via my.sensmax.eu interface.
• Fixed Wi-Fi networks refresh bug in SSID list.
• Factory Reset function added. Press and hold the WPS button for delete all user settings and data.
• Fixed bug which cause the spontaneous device reset sometimes.
• The occupied zone marked RED on the HOME page:

• Telegram Daily Report added:

• Other bug fixes and improvements.

v1.2 (02.10.2020)

• Fixed device reset when Telegram Token or Chat ID contains incorrect symbols
• Added name sync between sensor and my.sensmax.eu system.
• Fixed bug: gate and zone doesn't allow the use of a space or "_" between words.
• Once the "More settings" expanded, the display text toggle to "Less setting"

v 1.1 (22.09.2020)

• MQTT messages were divided to topics by the message type.
• Added PING packets to MQTT protocol. Allows to monitor activity of sensor:

• Automatic Telegram message after firmware update added (message points to this blog).

v 1.0 (20.09.2020)

• newest TAC-B sensor was released!
• MQTT protocol implemented.
• Telegram notifications implemented.