The all-in-one Internet-ready remote telemetry unit for automation and monitoring applications offers outstanding functionality from a single compact, rugged unit.

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    Reduce installation costs compared with a SCADA or PLC network

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    Save engineering time without the need for complex programming

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    Real-time access to your data on the move through a standard web browser

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    Machine-to-Machine cellular connections

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    Reduce asset downtime through speedier response

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    Lower maintenance costs

Web Server
  • Web Server
  • Programming
  • Alarms
  • Security
  • Applications

Web server technology

The all-in-one TBox LT2 remote telemetry unit with 3G, 4G or LTE modem options provides real-time remote access and control of your assets, using the latest web server technology. On-board web server technology eliminates the need for complex SCADA software and costly HMI displays.

Web server technology


Servelec’s programming and dynamic analytical tools and libraries significantly reduce development time even for complex multitasking automation requirements. With TWinSoft, an easy-to-use and intuitive configuration tool users can quickly complete their applications and dynamically control communication, alarms, data logging and logic, locally or remotely, in complete security. TWinSoft also includes WebForm Studio which allows users to create dynamic embedded web pages without any coding knowledge.


Alarm management

TBox RTUs use push communications to send multimedia messages to defined groups and devices using escalation and shift management protocols and actions taken are recorded on the TBox’s local memory. At a specific time or following a change of state, a TBox RTU can automatically send messages to multiple recipients with attachments such as complete mobile-friendly reports with live and historical information, alarms and event notifications. Like email, SMS messages can be  transmitted to multiple recipients at a scheduled time or following an event.

Alarm management


All TBox devices and connected assets are protected by a state-of-the-art cyber security suite with authentication, encryption, firewall, SSL/TLS, HTTPS, SMTPS SFTP/FTPS and VPN.



Thousands of TBox LT2 units are in operation across the globe controlling building systems at world-renowned landmarks, monitoring broadcast transmissions to millions of people and monitoring supply levels of essential commodities such as oil, gas and water.

Inputs & outputs
Removable I/O Connectiors Removable spring-cage
terminal blocks
Digital modules 16 digital inputs or outputs (3 DI can be counter inputs)
Analog modules 8 analog inputs, 2 analog outputs
Temperature modules 2 temperature inputs
Processor Unit LT2
Type 32-bit ARM9, 400MHz
Flash RAM 32MB NOR Flash
Real-time clock Yes with battery backup
Battery backup 1MB SRAM with lithium battery backup
RTU address 1 to 255 or 1-65535 (protocol dependent)
Event logging Up to 100,000 events
Communications Supported
Total Ports / RTU 5
Modem 3G/4G/LTE
Master / Slave Yes
Peer-to-peer No
Fallback levels No
PC link Yes
Protocol SMTPS
IP forwarding
DNP 3.0,
IEC 60870-5
Siemens ISO-TCP
Allen Bradley
  Others available on request
Local (PC/Laptop) Yes
Remote via network Yes
Programming Via TWinSoft suite (including WebForm Studio
and Report Studio)
Languages Ladder logic, Basic, Web Services, advanced
development via ADK
Local watchdog timer Yes
Communication status Yes
Configuration display Yes
I/O status Yes
Debug Yes
Instant alarm notification Yes
Datalogging Yes
Pre programmed Yes
Trace log Yes
Reports Yes
DC supply DC powered, 9 to 30V DC
Solar supply Solar panel can be used
Power down modes No
Battery backup Yes
Battery size 7AH, nom. 12V DC
Battery charging option Embedded battery charger,
13.8VDC temperature
Ambient temperature -40°C to +70°C / -40°F to +158°F
Storage temperature Storage: -40°C to +80°C / -40°F to 176°F
Humidity 0-95% non-condensing
Cyber Security
Authentication Four level of authority,
HTTP login, SSL/TLS,
Certificates, IEEE802.1x
IP Security Firewall (level 1, 2 and 3),
Width 29mm (1.4”)
Height 150mm (5.91”)
Depth 83mm (3.27”
CE, UL/CSA, FCC, RCM, RED, Class I Div 2,
IEC 60068-2/6/27/31/64



Where to buy

Enter your location to find your nearest distributor for the TBox LT2 RTU


M2M software application that provides a simple and secure remote connection between your TBox Remote Telemetry Unit and your PC.

View TConnect

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