Access Control Unit TTA-08

Unit for remote monitoring security and fire alarm loops and controlling various sensors


  • TCP/IP, SNMPv2
  • GSM/GPRS, Ethernet, RS-485, RS-232 Serial Port
  • 4x security and fire alarms loops
  • Temperature, humidity, 220V sensors, voltage measurements 0.90V DC
  • External Power Supply
  • Power consumption 3W
  • Up to 20W in Battery Charge Mode
  • Wide input range power supply -20..70VDC


This unit is designed to provide remote monitoring (via Ethernet or GSM/GPRS) of the remote equipment and objects (remote exchange capacities, processing equipment, stand-alone stations and industrial premises).

Access Control and Sensor Monitoring - panel appearance, photo

Рic 1. TTA-08 Unit – front and back panels

It allows to connect detectors and sensors for monitoring climatic parameters (temperature, humidity) as well as standard security equipment (motion sensors, broken glass sensors, window/door sensors, smoke sensors, flood sensors).

Connectable sensors, security equipment for remote monitoring and control

Pic 2. Remote Temperature Monitoring System.

Connected devices, monitored parameters

  • four loops for connecting devices, as well as power supply output for devices Security/Fire Alarm (10..12V, 100mA or 10..15V 750mA (optional))
  • input of a remote Temperature sensor
  • voltage measurement input 0..3V (Humidity sensor)
  • voltage measurement input 0..90V (Battery)
  • two inputs for connecting the presence sensors ~ 220V
  • 12V battery input

Temperature Measurement and Humidity Control

Standard configuration of the remote sensor monitoring and control unit allows to connect security equipment (motion sensor, broken glass sensor, window/door sensor, smoke sensor, flood sensor) as well as temperature measurement sensor and humidity sensor.

Use of temperature measurement and humidity sensors allows to build the climatic parameter control system for various premises based on the remote sensor monitoring and control unit.

Use of the dedicated temperature measurement sensor (cascade sensor – CS) allows to build the system for multipoint temperature control/monitoring with the number of control points ranging from a few to several hundred.

The multipoint temperature control system allows to measure temperatures in rooms with specific conditions:

  • server rooms where temperatures of each rack should be measured individually
  • hospitals and laboratory facilities
  • factory floors requiring control and measurement of temperature parameters
  • large storage areas
Remote Multi-Point Temperature Monitoring System

Pic 3. Construction of the Remote Multi-Point Temperature Monitoring System.

The following products are required to build the Multipoint Temperature Control System:

  • Remote Sensor Monitoring and Control Unit
  • Power/Interface Unit (PIU)
  • Cascade Temperature Measurement Sensors – based on customer requirements, from 1 up to several hundred

AC Power Line detector and DC Battery Voltage Monitoring

Remote Monitoring and Control Unit have 2 inputs to connect 220V AC voltage availability sensors and one input to measuring DC battery voltage.

220V AC Power Line detector availability sensor is the innovative proprietary product.

Battery voltage is measured within the range from 0V to 90V with +/- 1V accuracy. There is an option of setting the lower and upper battery voltage thresholds using the remote monitoring unit software, which allows to provide alarm reporting (SNMP trap, sound or visual alarm).

WEB interface of AC Power Line detector and DC Battery Voltage Monitoring

Pic 4. AC Power Line detector and DC Battery Voltage Monitoring via WEB interface.

Using Remote Monitoring and Control Unit combined with AC 220V availability sensors and DC battery voltage control sensor allows to build the power monitoring system in the rooms like a server room.

AC Power Line detector and DC Battery Voltage Monitoring System

Pic 5. Construction of AC Power Line detector and DC Battery Voltage Monitoring System.

The system is designed to monitor the DC battery voltage and AC 220V availability. The system monitors 220V availability (2 inputs) in real time and measures the current battery voltage. When AC 220V is not available or the battery voltage is beyond the preset lower or upper voltage threshold the system alerts the manager/user by sending visual alarms, sound alarms, SNMP trap or SMS.

RS-232 Serial port to Ethernet Converter

TTA-08 features the functionality of connecting RS-232 and RS-485 serial interface units to Ethernet.

RS-232 and RS-485 Serial communication port external galvanic decoupler interfaces allow to connect a wide range of additional third-party devices to LAN like power supply meters and smart card/RFID readers. The product supports 1 serial port.

Connecting devices with serial interface RS-232 and RS-485 to Ethernet

Pic 6. Connecting Ethernet devices with serial interface RS-232 and RS-485.

Remote Monitoring Unit Web Interface

The sensor data are processed by the controller and sent via Ethernet or GSM/GPRS to the manager/user PC or as a text message to his/her phone.

The Web interface allows the manager to see the current status of all connected sensors of the selected device on his PC in real time.

WEB interface of the monitoring the status of connected sensors

Рис 7. WEB interface of the device – monitoring the status of the sensors.


SNMPv2 support allows to integrate the product in the standard network control and monitoring system.

SNMP-Based Control and Monitoring System

To control several monitoring units at a time TTA Monitor application can be used.

The application designed to communicate with devices can use either SNMP or internal communication protocol. TTA Monitor can operate under Windows or Linux operating systems.

Additional solution for simultaneous monitoring of multiple devices

Pic 8. SNMP agent “TTA Monitor” – a solution for simultaneous monitoring of multiple monitoring devices.

Monitoring the status of the connected sensors of the selected device

Pic 9. SNMP agent “TTA Monitor” – monitoring the status of sensors.

Monitoring of remote objects allows the manager to find the required solution and switch systems remotely or instruct personnel as required.

Remote Monitoring and Control of Remote Objects

Remote Monitoring Unit combined with sensors allows to build various systems to monitor and control remote objects:

  • Monitoring system for data processing centers and server rooms
  • Monitoring system for industrial premises
  • Monitoring system for storage areas
  • Monitoring system for pharmacy premises
  • Monitoring system for food production and refrigeration facilities
  • 19″ rack monitoring over GSM and LAN

Technical Specifications

System Type
General Info
Length 15 cm/5.905″
Width 10.8 cm/4.251″
Height 3.9 cm/1.535″
Weight 400 g (without the aerial, battery and set of sensors)
Ethernet 10/100 Mbit – 1
RS-485 galvanically decoupled to 2kV – 1
RS-232 galvanically decoupled to 2kV – 1
Connected Devices and Monitored Parameters
Loops for connecting security/fire alarm devices – 4
Power supply output of security/fire alarm devices (10..12V, 100mA or 10..15V 750 mA) – 1
Remote temperature sensor connection input – 1
0..3V voltage metering input (humidity sensor) – 1
Temperature sensor power supply output (5V, 100mA) – 1
0..90V voltage metering input (station battery or UPS battery) – 1
Inputs for connecting 220V AC voltage availability detectors – 2
Input for connecting a backup battery of 12V rated operation voltage – 1
Event Memory
Nonvolatile memory for keeping 65,536 events
Nonvolatile memory for keeping 131,072 events (optionally)
Supported Protocols
Power Supply
Input supply voltage range from 20 to 70V DC
3..4W (without GSM module)
4..5.5W (with GSM module)
Power consumption up to 20W in the battery charge mode

Delivery Set

Delivery Set No.1:
Delivery Set No.2:
Delivery Set No.1:
In addition the unit can be supplied with temperature and humidity sensors as well as 220V AC power detector.
The power supply unit is not included in the delivery set.
Photo Humidity sensor and temperature sensor

Humidity sensor and temperature sensor

Photo 220V AC power detector

220V AC power detector