in ThermoVSN access control system

Access management and door control

An access control system is a set of various components for site security, which depend on many factors. The main elements of an access control system are locking devices, turnstiles, gates and electronic or electric locks for entry, floor doors and office doors.

You certainly want to decide who can gain access to your site, at what time, who can lock and unlock different kind of doors, and to automate your door locks, so to perform a door control. With use of different elements of an access control system, you can secure your building and provide physical security to your coworkers or visitors with minimized human workload. An electronic access control system uses computers for such purpose. Various credentials can replace mechanical keys: access is granted or denied based on the credentials information. The system can also monitor the door and inform the administrator on its state.

The administrator still can establish different levels of security and perform visitors management remotely, for instance with cloud based access management solutions. Door control systems can also be connected with intercom systems.

Multiple interfaces are common for such purposes, depending on system architecture. ThermoVSN system offer various door integration possibilities.

  • Components

    An access control point can be a door, a parking gate, a turnstile, an elevator, or any other physical barrier, where access can be controlled electronically and automatically.
    An electronic access control door is composed of multiple elements. The most basic solution is a stand-alone electric lock, unlocked by an operator with a switch. To automate this task, operator intervention is replaced by a reader. The reader can be a keypad with a code, it can be a card reader or a biometric reader. Usually, readers don’t make an access decision, but send the code or card number to an access control panel (or a central PC) that verifies the code or number in the access list. A magnetic door switch can be used to monitor the door position. In most cases, entry is controlled, and exit is not controlled. When exit is not controlled, a device called a request-to-exit (REX), such as push-button or a motion detector is used.

  • Credentials

    A credential is a physical object, a piece of knowledge, or a biometric feature, allowing the user access to a physical facility or computer-based information system. Examples of credentials are the information known by user (such as number or PIN), a physical object with data (such as badge), a biometric feature or a combination of these elements, known as multi-factor authentication. Modern software allows mobile devices such as smartphones operate as access devices.
    Various technologies, such as Near field communication (NFC) and Bluetooth, can be used to communicate user credentials to readers.

  • Operation

    When the reader is presented a credential, it sends the credential information to a control panel which is a processor, or to a host PC (the controllers are IP enabled, and connect to a host and database with use of standard networks). The control panel or the host PC compares this information with a list of allowed users (found in database), grants or denies the access, and sends a transaction log to a database. If there credential information has matched with the access list, the control panel operates a relay which unlocks the door. If access is denied, the door remains locked. Often the reader provides a signal, such as a flashing LED showing the access status.
    If we use one credential, authentication is called single-factor. With multiple types of credentials, we talk about multi-factor authentication.

  • Data transmission

    The most common data transmission protocol Wiegand protocol which operates to transmit data to the control panel, but other options such as RS-232, RS-485 and Clock/Data are also widely used.

Simple access control system with one door is illustrated on the image below.

access control scheme

ThermoVSN and access control

Our Face X access control units are multifunctional and can be adapted to your business needs. They are equipped with various readers such as QR and barcodes reader, magnetic cards and IC e-cards reader (used for badges), as well as facial recognition technology which is widely used to read biometric (face) features for access control purposes.

Our devices support multi-factor authentication, so you can grant access with more than one verified credentials you can choose.

You can install one device at the whole site or use multiple devices connected to a central server or PC at different locations of the site. Each device has an embedded access control ThermoVSN application where you choose the kind of credentials you decide to use. Multiple devices are interconnected and basically use your facility’s users database in order to perform access control.

Face X devices have interfaces and support the following protocols:

  • RS-485
  • RS-232
  • Wiegand 26/34-bit

They also have a relay for electric door locks.

Face X can be used in various access control points: entry doors, turnstiles, entry or parking gates. They have both access control and intercom functionalities, so it is up to you to decide how to manage access with use of these machines.

They have different fixation ways: to the wall, to a turnstile or to a special smart column.

face X2 IC card with NFC reader use case
turnstile warehouse
face recognition


  • Wiegand 26/34-bit input and output
  • RS-485
  • RS-232
  • Relay
  • RJ-45 (10/100 M Ethernet)
  • 1x USB 2.0 Host, 1x USB 2.0 OTG
  • Power: DC 5.5 mm × 2.5 mm
  • Supports Bluetooth® 4.0
  • Supports WiFi 2.4 GHz 802.11
  • Supports SIM cards, 3G/4G LTE networks
  • Distance sensor
  • Facial recognition
  • ThermoVSN Face X2: NFC/IC cards reader (ISO14443 13.56MHz type A & B)
  • ThermoVSN Face X2: QR codes scanner
  • ThermoVSN Face X2: Barcodes scanner (1D/2D)
  • T-PULSE-X thermal camera (option)
  • Another feature such as PIN code can be added upon request
  • Devices can also be used as intercom (SIP or WebRTC)
Face X2 view and interface