FAQ – frequently asked questions


How to update firmware via USB?


How to update firmware remotely?


How to update SERA2 software and firmware of the module?




How to start DS18b20 temperature sensors:

Step by Step: https://youtu.be/CKqObn8bqWU


How to test temperature- humidity monitoring system with free testing, monitoring, diagnostic tool?:

Step by Step: https://youtu.be/N-POEFg_9EE


How to start Wiegand keypad:

Step by Step: https://youtu.be/F1piuyD3lVQ


How to receive alarm SMS and call after alarms?

Step by step: https://youtu.be/Pe10WMMuOt8



How to start AM2320 temperature- humidity sensors?

Step by step:https://youtu.be/pyG-bk08S_A



How to set output pulse counter?

Step by step:https://youtu.be/aRUn7KmJdJg




  1. Start SERA2 software.
  2. Connect the module to the computer
  3. Connect power supply
  4. Go to Sera2> Update (in the command line)
  5. If You want preserve device configuration, mark on the required box
  6. Click Start on the Start FW Update button
  7. Wait until the module will be successfully updated.
  8. Restart the module

GTCOM2 and primary alarm panel synchronization methods:


GTCOM2 and primary alarm panel synchronization by Panel’s PGM. Control via FREE App, Short call, SMS:


GTCOM2 and primary alarm panel synchronization by Panel’s EVENTS VAR.1:


GTCOM2 and primary alarm panel synchronization by Panel’s EVENTS VAR.2:


Receive events from primary alarm panel Covert Contact ID codes to SMS text: https://youtu.be/q2erR6-1spw

How to control primary alarm panel from GTCOM2 via iButton keys, short call, SMS, mobile, web app: https://youtu.be/Bs_5JDarxvs

How to set temperature sensors DS18b20. Programmable thermostat. Up to 32 sensors: https://youtu.be/VTAiMp78V1Q