ACCO is a modular access control system (ACS) – its architecture is based on door controllers that can work autonomously or create an entire network.
The advantages of the ACCO system range from simple single door access control systems to more extensive installations requiring centralised management.
The ACCO access control modules can be connected via the RS-485 bus to form a network of up to 255 controllers. The ACCO-USB converter is responsible for communication between them and the PC, while the ACCO SOFT LT software is used for programming and system administration. User identification devices such as proximity card readers or keypads are necessary for access control functions.
ACCO controllers support readers using the EM Marin and WIEGAND 26 transmission formats, as well as Dallas key readers. Terminals of the ACCO system can be integrated with terminals from other manufacturers, including biometric readers or non-standard proximity card formats.
Inputs and outputs of the ACCO modules extend the system functionalities. For example, door opening buttons or alarm devices can be connected to the modules. The connectors also allow for interoperation with intrusion or fire alarm systems. This way, e.g., during a burglary, selected doors get locked automatically, or when fire breaks out – unlocked, allowing an efficient evacuation. The events generated by the access control modules can in turn trigger specific responses from the intrusion alarm or fire alarm system.
ACCO Soft Lt, an intuitive and versatile software, is used to configure the access control system and administer its resources.
The non-volatile memory of a single access control module can store system configuration settings and register over 24,500 events. All system events are continuously logged in the ACCO Soft Lt program. The software allows users to browse their list, with option to apply various filters. This grants the system administrators a clear insight into the information required at a given moment. The event list can be exported to a file in a selected format (.CSV or .XLS) for convenient archiving.


The ACCO system has an option to limit the number of possible entries for every user. This function may be used in places where a certain number of visits is purchased – e.g., in fitness clubs or swimming pools. Activation of the anti-pass back function eliminates the possibility of multiple use of one identifier to open the door under surveillance.

The presence monitoring function helps to determine when users enter, leave or are late for work. This allows to check if workers use their identifiers in accordance with company policies.
The ACCO Soft Lt software features a tool that generates presence reports. The system administrator is able to define various rules of entry/exit, using the system modules. By setting specific rules, it is possible to determine who is present in a particular room or area, and how long they have been there (data on entry/leave of workers is always collected). These are used to calculate attendance time, and generate a report, which can later be useful for calculating overtime and more.