Modular alarm system for huge objects - GuardEx


GuardEx system provides high-reliability guarding, alerting and calling signalization, with flexible access control capability, could be applied for small as well as huge objects (for example: hotels, plants, offices, multi-storey garages.) Maximal modules amount: 600.

Principle of operation:

All input-output devices are connected together serially with one-pair signal wire. First and last are connected to the computer, thereby they form loop of modules. If happens that module lost connection with the computer, it begins to work offline, providing undisturbed operation of access control system.


One of module release versions for hotels has an algorithm, developed by hotel security service: each module has connection with one card reader, door-open sensor, capacity sensor, lock-open sensor and electrical door lock. Module provides twenty-four-hour door protection, personal and guest access and looks after door could no be open for a long time.

The computer, with installed GuardEx software, is used for system programming and monitoring.

Software Features:

  • User-friendly graphical interface
  • The reflection of zones and outputs with changing states
  • Up to 100 plans
  • Unlimited amount of user accounts with flexible access policy
  • Four card types: quest, personal, security, tenant<
  • Card amount: up to 10000
  • Modules amount: up to 600
  • 15 time zones + 1 twenty-four-hour zone
  • Events are automatically recorded to the computer hard disk
  • Real time events viewer; events filtering
  • Emergency scheme of opening doors in case of fire and much more


System is based on modules CARDHN:

Technical specifications:

4 analog inputs for alarm zones, 2 analog inputs for fire zones
2 digital inputs
3 relay outputs, 1 open collector output
2 RS485 interfaces
2 interfaces for card readers
1 relay output for door lock control, 1 additional 12V (0.5A) output
nonvolatile build-in clock
nonvolatile storage (250 cards and 5000 events)
15 time zones + 1 twenty-four-hour zone
power supply: 15-17 VAC
dimensions: 175x125x40 mm