For filling stations
The device is designed for filling station infrastructure and fuel price pylon control tasks.
VOSCOM RADIO MODEM
STL-VS
Specialized 433 MHz radio modem
A radio modem kit for wireless transmission of fuel price data from a filling station control system to a fuel price pylon display.
STL-VS-USB
433 MHz
STL-VS-RS485
Frequency band
433.075–434.750 MHz
Power
not more than 10 mW
Transmitter
USB / RS232, +5 V power from USB
Receiver
Galvanically isolated RS-485, 12–24 V power
Purpose
Wireless link between the filling station control system and the fuel price pylon
STL-VS is used where current fuel prices need to be transmitted to a price display without laying a long cable line between the server room, operator workstation and the pylon.
Price transmission
The transmitter receives data from the control system or operator workstation and sends it over the radio channel.
Delivery confirmation
The receiver sends data to the display via RS-485 and returns confirmation that the price has been updated successfully.
Integration and operation
Capabilities for real filling station sites
A compact set of practical functions that help deploy STL-VS with different price pylons and control schemes without overloading the main architecture section.
PROTO
Control systems and display protocols
STL-VS is designed for integration with common filling station ecosystems and industrial fuel price display protocols.
- Topaz-AZS integration: a background driver can read changed prices from the open Topaz database and transmit them to the pylon without manual operator input.
- Supported display protocols: Nefteprodukttekhnika, VSD, Impuls.
- Transparent mode: pass-through transmission of non-standard or proprietary data streams over USB / RS-232 / RS-485.
IR
Pylons without RS-485
If the outdoor pylon has no RS-485 data receiver, IR emulation can be used without replacing the display.
- The STL-VS receiver is installed inside the pylon, and an external IR LED is placed close to the display’s existing IR receiver.
- The modem emulates commands from a service remote for VSD, Impuls, or a custom protocol and updates prices over the radio channel.
BLE
Smartphone and PC control
Equipment setup and operational price control are available without connecting service cables or a laptop directly to the pylon.
- A smartphone and PC application can change modem parameters or set prices from the operator room or next to the pylon.
- Connection is made over Bluetooth Low Energy.
- Access is protected by an individual PIN code to prevent unauthorized price changes.
RELAY
Relay mode for long distances
For remote pylons or sites with difficult construction conditions, an intermediate relay modem can be added to the system.
- The relay forwards packets along the chain, improving delivery reliability to the final display.
- The solution is designed for low power consumption while preserving command transmission speed.
OTA
Monitoring and OTA updates
STL-VS can integrate with cloud services for filling station network maintenance and remote software updates.
- The website can be used to monitor modem status, signal level, and data transmission status when a modem is connected to the internet through Wi-Fi or a BLE-connected station PC.
- Firmware updates are delivered through a protected channel, allowing new functions and protocols to be added without removing equipment.
Operating principle
Transmitter, protected radio channel and receiver at the pylon
The kit consists of two devices: the STL-VS-USB/RS232 transmitter module and the STL-VS-RS485 receiver module.
Practical result
This layout eliminates the need for a long cable line to the pylon, simplifies installation and reduces the risk of mechanical damage to wired infrastructure.
01
Filling station control system / operator PC
02
STL-VS-USB/RS232
433 MHz radio channel
LoRa / CSS / ACK
03
STL-VS-RS485
04
Fuel price pylon display
Deployment photos
Pylon, device, and installed block
Photos help evaluate the site appearance, device enclosure, and an example receiver block installation inside a fuel price pylon.
Technical data
Main STL-VS specifications
Key device parameters for preliminary compatibility assessment with the site, fuel price pylon, and operating conditions.
Frequency band
433.075–434.750 MHz
Channel spacing
125 kHz
Transmitter power
not more than 10 mW
Transmitter power supply
+5 V from computer USB port
Receiver power supply
12–24 V from the existing fuel price display power supply
Receiver interface
Galvanically isolated RS-485
Ingress protection
not less than IP65
Temperature
from −40 to +50 °C
Weight
approximately 160 g per device
Dimensions
100×88×40 mm including cable glands
Practical range
up to 300 m for a typical site; for longer distances a directional antenna configuration may be used
ANTENNA / RF POWER
The standard configuration uses 433 MHz antennas. Replacing the antenna with a model that has a different gain is allowed only with correct transmitter power adjustment and compliance with applicable regulatory limits.
Configuration
STL-VS configuration software
The software is used for initial radio modem configuration, radio channel testing and trial data transmission to the price display.
Using the software, an engineer can check device status, set connection parameters, send a test price packet and verify that confirmation is received from the receiver.
USB or Bluetooth may be used for service configuration if the corresponding channel is included in the specific device configuration.
Go to downloads
DEVICE
STL-VS-USB/RS232
LINK
433 MHz / ACK enabled
RX
STL-VS-RS485 / isolated
TEST
fuel price packet → confirmed
Documentation
Product passport, certificates and operation files
This section contains device documents, manuals, certificates, and software for STL-VS configuration and operation.
Certification and compliance
The product has a declaration of conformity with the requirements of technical regulations TR CU 020/2011 and TR EAEU 037/2016, as well as a voluntary certificate of conformity.
Declaration
EAEU N RU D-RU.RA02.V.93437/26
Voluntary certificate
ROSS RU.32001.04IBF1.OSP28.97523
Supply
Supply, installation, and partners
VOSCOM.ONLINE is the STL-VS manufacturer. Equipment is supplied for a specific site, and deployment is performed by the manufacturer or certified installers.
Price on request
on request
the STL-VS kit configuration is defined for the site, equipment set, and deployment scheme
Manufacturer
MWOS
Development, manufacturing, MWOS firmware, technical support, and updates are provided by VOSCOM.ONLINE.
Installation
B2B
Supply and commissioning are performed through the manufacturer or certified installers.
Device platform
STL-VS runs on MWOS
STL-VS is based on the MWOS operating system and is certified by VOSCOM.ONLINE for use on industrial sites of this type.
Cost
by agreement
Contract terms
depend on device quantity, configuration, delivery schedule, and installation scope
Schedule and batch
defined for the site, equipment batch, and customer requirements
Other applications
Radio link for industrial sites
Radio modems of this class can be used not only at filling stations, but also at other industrial sites where control data or telemetry must be transmitted reliably without laying a cable line.
Certified installers
Supply and commissioning may be performed through companies that have completed the manufacturer’s technical certification.
VOSCOM.ONLINE
STL-VS manufacturer and technical support
Germes LLC
certified installer, Saint Petersburg
Contact
Discuss STL-VS supply
For pilot deployment, STL-VS kit supply or adaptation for a specific filling station pylon, contact the manufacturer.
VOSCOM-ONLINE LLC
VOSCOM-ONLINE LLC
Email
5022826@gmail.com
Phone
+7 (925) 502-28-26
Main website
voscom.online/en