VT225t / Room monitoring unit (previous name VT325t)

Datasheet page: https://vutlan.atlassian.net/l/cp/At2b1ahP

Product page: https://vutlan.com/remote-monitoring-units/180-vt225t-room-monitoring-unit.html

Brochure: https://vutlan.com/index.php?controller=attachment&id_attachment=29

Drivers: https://vutlan.atlassian.net/wiki/spaces/DRIV/pages/2912583997/

Meta tags: Small monitoring unit, Monitoring unit in a plastic enclosure, Low-cost monitoring unit,

Function and purpose

Low-cost remote environmental monitoring unit for small IT rooms. Can monitor temperature, humidity, voltage, leakage, smoke, airflow, and other parameters. It is also used as an I/O controller (e.g. door control, fans, generator, control panels, UPS, circuit breakers, and alarms). Can signal an alarm, activate a siren, send an e-mail notification, or send an SNMP Trap. Can monitor up to 100 physical sensors. Can use up to 700 different elements - notifications, triggers, timers, logic schemes, sensors, and dry contacts. Has a built-in Web interface with virtual sensors, logic schemes, different types of notifications, and control panels. There are built-in servers and agents like HTTP, HTTPS, SNMP v1, 2c, 3, SMTP, Radius, Syslog, FTP, DHCP, and OpenVPN clients.

VT225t is a new model in it’s range. It can be compared to VT335i in a previous range of products.

  • low cost, affordable

  • faster processor

  • memory doubled

  • plastic case

Physical Description

Front panel:

Back panel:

Side panel:

1. "USB" - micro USB-port 2.0 is needed for USB camera recording, USB Flash for system logs, and system restoration. Read instructions in "Connecting USB camera", "USB camera settings. How to save a video", "Saving system logs on USB flash drive", and "USB upgrade or restore of default settings".

2. "Analog sensors: A1..A4" - x4 RJ12 6P4C analog sensor inputs with auto-sensing. Read instructions at "Analog sensors connection", and "Sensor configuration".

3. "SD card" - MicroSD card slot with an ejector. The card is needed for data storage or the "system restore". Read instructions at "Saving system logs to SD card", and "Restore of the appliance (for VT960 series)".

4. "LEDs: R1, R2" - status indicators for two 12V 0.25A outputs on the front panel.

  • The LED is ON (orange) - the output is ON (the initial state can be configured).

  • The LED is OFF (orange) - the output is OFF ((the initial state can be configured).

"LED: ACT" - green LED indicates appliance system status,

  • - operating mode of the device: switches at a frequency of 2 times per second;

  • - successful completion of the software update process: switches at a frequency of 4 times per second;

"LED: ALARM" - The LED can be programmed from the interface for alarm indication.

"LED: ERR" - red LED indicates error and traffic.

  • the operating mode of the device: If everything is normal, the LED is extinguished, if not - there's a constant glow;

  •  software update mode: switches at a rate of 2 times per second;

"LED: CAN" - green LED indicates CAN bus status.

  • The LED blinks slowly - nothing is connected

  • The LED blinks fast - configuration is in process

  • The LED glows constantly - connected to CAN devices

5 "RELAYS 12V 0.25A" - 12V 0.25A (for each output) terminals outputs (electronic relay). Pitch 3.81mm, 3P. Each output has an LED indication "E1, E2". Read the instructions at "Connecting 12V devices to 12V outputs".

6. "Restart" - the button restarts the appliance. Hold the button for 2 seconds and then let go, and the system will restart.

7. "Reset settings" - reset settings to default factory settings. Keep pressing the button for more than 5 seconds. The “ERR” LED will start blinking. This indicates that the factory restoration has started. Wait for 20-60 seconds for the system to restart. The “ACT” LED will start blinking once the system has been restarted. The device can be accessed now.

8. "LAN port" - Ethernet 10/100 Base-T port, provides an Ethernet connection. Read more in this section "LAN, GSM, LTE, RADIUS, DNS, SSL, VPN".

  • "Orange LED" - orange LED for Ethernet port. It shows network traffic.

  • "Green LED" - green LED for Ethernet port. It shows network traffic. Flashes green when the system starts up. Shows the connection state (constant green light - the connection is established, blinking green - the connection attempt).

9. "CAN" - digital connector RJ12 6P4C for the connection of CAN sensors/extensions/devices on a CAN bus. Modules can be chained together. Has an LED indicator "CAN". Read the instructions in "CAN devises connection", and "Setting up CAN".

10. "DRY CONTACT INPUTS 1...2" - Digital inputs (Type IN). Pitch 3.5mm, 6P. Read the instructions at "Connecting dry contacts", and "Dry contacts settings".

11. "DC 12V POWER"- 12V DC 2A main power input.

12. "Side switch

Connection overview diagram

Drawing dimensions

Inventory - Package content

Technical details


Vutlan s.r.o. (LLC)

Remote Infrastructure Monitoring and Control

43 ul.Svornosti, 821 06 Bratislava,

Slovak Republic