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Janus C4

Janus C4 - One solution for Every Project

Software · Hardware · Integrations

With Janus C4, Grosvenor technology has taken a step forward in Building Access & Security ManagementJanus C4 is a customisable, integration-centric software with innovative blade-based hardware. It focuses on versatility and useability for customers, users and installers.

Making sure workspaces are safe, limiting room occupancy levels and contactless entry are all now more important than ever. This means that the access control system used to manage your building needs to be as effective and as user-friendly as possible, Janus C4 achieves this.

Janus C4, our new end-to-end Access Control Solution has been developed to make the management of your building: easier, simpler and quicker. Our solution enables you to manage access rights for individuals and groups of people securely – across a single site or multiple sites, globally.

This comprehensive, network-enabled building management software solution is designed to work seamlessly with our robust Advance hardware, a modular, scalable platform that it is suitable for projects of any size. To protect your system and help you stay compliant, the hardware supports OSDP (encrypted communication) as well as GDPR data management tools.

The Janus C4 Software is an advanced user-friendly computer programme that allows you to manage Janus C4 AND your integrated security elements in one place, including:

  • CCTV
  • Intruder Alarms
  • Wireless Locks
  • Elevators

This allows you to manage all of your onsite security systems within the Janus C4 software dashboard, giving you efficiencies and convenience other platforms can not.

Another benefit is Janus C4 can synchronize directly to the Active Directory server of any business. This means there is less admin involved in maintaining the system, as it updates personnel details each day to reflect the changes made within Active Directory . This tightens security and gives you efficiencies that save you time and cost. Janus C4 is also capable of batch data uploads through spreadsheets (.CSV).


Designed with the Engineer in mind, the software intuitively and immediately finds and recognises the hardware, so you can start adding users and setting access rights within minutes.  All complimented by native Active Directory support.

It provides end-users with a wide range of tools, including: 

  • Visual floor plan with live status indication 
  • Automatic Actions (execute system-related actions on either a timed or event basis)
  • Security system(s) process automation 
  • Identity management 
  • Crisis management   
  • Role-based operator security 
  • Hierarchical data organisation for easy navigation  


The innovative blade-based Advance hardware is modular, scalable and customizable – designed to be easy and cost effective to install and configure.

The controllers support both IP and RS-485 (a Line Header is needed for RS-485 data lines) as standard, they can store up to 250,000 credentials, and with single and multi-controller options plus the ability to retain data even in a power outage, the Advance hardware is suitable for any installation.

Advance fully supports the latest version of OSDP (Open Supervised Device Protocol) – an encrypted access control communication protocol, which has been adopted and certified by both the Security Industry Association (SIA) and the International Electrotechnical Commission (IEC) listed as IEC 60839-11-5.

OSDP offers:

  • More Security:  OSDP protects readers against hacking with ‘Secure Channel Protection’ – using AES-128 encryption
  • More Functionality:  OSDP uses 2 wires instead of the 12+ required for Wiegand, and allows for a multi-drop installation, supervising connections to indicate reader malfunctions
  • More Interoperability:  Using OSDP enables communication among different manufacturers’ devices
  • More Consistency:  Provides a concise set of commonly used commands and responses for supported hardware vendors


Avaliable Integrations and Readers

Unlike other access control systems, Janus C4 integrates with all the leading and most common Wiegand and OSDP access reader devices from well known manufacturers. This includes:


Mobile enabled readers

13.56MHz Smart cards (including DESFire EV2 and other sectored card reads)

Legacy 125KHz Keyfobs and cards

Janus C4 also integrates (software to software) with leading third-party electronic security manufacturers equipment. For further information on our supported integrations, please click on any of the pictures below to see the relevant datasheet:

This means we can do security the way YOU want it, with the ability to make use of secure reader and card technology plus third-party electronic security systems, we can help you create an integrated, secure, cost-effective and modern, contactless workspace.

Contact us for more information and to find out about our free 60-day software trial

Contacts Us - Janus C4