STN-4G

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Characteristics of the STN-4G Transmitter

The STN-4G (LTE) transmitter is a device for transmitting alarm signals from protected sites to a monitoring center via GSM networks (2G/4G). Designed and manufactured in Poland, it features 8 inputs and 2 outputs for

controlling external devices.

Power supply: DC 12.8 V (range 10.5–13.8 V) or AC 16–18 V (Imin = 30 mA, Imax = 1.2 A)

Inputs: 8 alarm inputs NO/NC, 1 tamper input for enclosure

Outputs: 2 open-collector (OC) outputs – controllable via SMS/CLIP/TCP, 1 AUX output (12 V, 160 mA)

Connectors: SMA antenna, mini USB programming interface (RS-USB converter required)


Additional features:

  • Data transmission via GPRS (2G), LTE (4G), SMS, CLIP
  • SMS backup transmission in case of TCP/UDP issues
  • Communication via UDP (PULSON) and TCP (SIA-IP/ADM-CID)
  • Operation with private or public APN
  • Programmable NO/NC event codes
  • Sending events via SMS to up to 10 numbers
  • Power supply and battery monitoring
  • Battery disconnection in case of failure
  • Remote reads and configuration (up to 3 authorized numbers)
  • Delivery confirmation for GPRS/LTE and SMS
  • Continuous monitoring of network registration and BTS signal strength
  • Limiting number of messages over a defined time period
  • Local configuration using ST-Configurator software
  • Remote firmware upgrade
  • LED indicators: GSM status, signal strength, SIM, battery, AC power

Applications:
Transmitting alarm signals to a monitoring center
Controlling external devices (e.g., alarm, lighting, gates)
Remote monitoring and supervision of site status


Transmission:

GPRS/LTE (TCP/UDP)
SMS, CLIP (backup channel)
Two independent IP addresses/domains


Notifications:

SMS to up to 10 numbers (editable messages up to 32 characters)
Delivery confirmation (SMS and GPRS/LTE)


Programming:

Local – mini USB (ST-Configurator)
Remote – via GPRS/LTE
LED indicators: GSM operating mode, signal strength, SIM status, battery level, AC power

TechnologyGSM, GPRS, LTE (4G)
Output impedance:50 Ω
Power supplyDC 12,8 V (10,5–13,8 V) / AC 16–18 V
Current consumption (min.)30 mA
Current consumption (max.)1,2 A
Maximum battery charging current:800 mA
Battery charging voltage13,7 V
AUX output capacity100 mA
Operating temperature range−20 °C to +55 °C
Dimensions (W × L × H)143 × 76 × 22 mm
Weight80 g
SIM card typeMini SIM (2FF) / Nano SIM (4FF)
Antenna connectorSMA
Programming interfacemini USB
Alarm inputs8 NO/NC
Tamper output1 (TAMP)