Mercury MP4502 Intelligent Controller – ICM Series
ICM-MP4502 mercury controller powered by Access360
Key highlights
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Built-in cybersecurity framework
Security controls are integrated into the controller hardware. Features such as ARM TrustZone, secure boot validation, hardware crypto support, and encrypted storage help protect credentials, configuration data, and system communication. -
Edge-based processing
Access decisions, event processing, and schedule handling take place within the controller itself. Local processing helps maintain consistent operation across distributed mercury access control deployments.
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High-capacity credential management
The MP4502 controller supports very large user databases, allowing systems to manage up to two million cardholders. This capacity makes it suitable for enterprise environments with large identity populations. -
Scalable reader expansion
The controller can manage four readers natively and expand through RS-485 modules to support up to 64 readers or openings. This allows organisations to start small and expand controller capacity as sites grow.
Open Access Control architecture
| Access Control Capacity | |
|---|---|
| Specifications | Particulars |
| Controller model | Mercury MP4502 intelligent controller |
| Expansion (Serial / Network) | Supports up to 32 RS-485 expansion modules |
| Native reader support | Supports up to 4 readers controlling 2 openings |
| Maximum readers support | Up to 64 readers with supported expansion modules |
| Doors / Openings | Up to 64 openings with supported expansion modules |
| Memory | Supports up to 2,000,000 cardholders and 500,000 transaction buffer |
| Hardware & Compliance | |
| Specifications | Particulars |
| Part code | ICM-MP4502 |
| IP protocol support | IPv4 and IPv6 |
| Power input | 12–24 VDC ±10%, 550 mA maximum (reader and USB current not included) |
| Total input / output capacity | Up to 1,024 inputs and 1,024 outputs (via supported expansion modules) |
| Cybersecurity features | ARM TrustZone, secure boot CPU, crypto chip, data-at-rest encryption, TLS 1.2/1.3 or AES-128/256, 802.1X, FIPS 140-3 use of OpenSSL |
| Operating temperature | 0°C to 70°C (32°F to 158°F) |
| Humidity | 5% to 95% non-condensing (RHNC) |
| Product compliance | UL 294 Recognized, FCC Part 15 Class A, CE Compliant, RoHS (2011/65/EU & 2015/863), EU REACH (1907/2006), California Proposition 65, NIST Certified Encryption (in process) |
Frequently asked questions
The Mercury MP4502 is a network-based controller used in enterprise mercury access control systems. It supports four readers controlling two openings on the controller itself. Additional readers and openings can be added through RS-485 expansion modules, allowing the controller to scale up to 64 readers or openings.
Setup usually begins by connecting the MP4502 controller to power and the network. The controller is then discovered through the access control software used in the system. During commissioning, installers configure network settings, reader connections, and device parameters.
The MP4502 Intelligent Controller receives its network settings during installation. The IP address is assigned when the controller is configured on the network through setup tools or the access control platform used in the deployment.
Firmware updates for the Mercury Security MP4502 are performed through the access control software that manages the controller. The update process loads new firmware to the controller while maintaining configuration and system communication.
Controllers in the Mercury MP Series, including the MP4502 controller, use Mercury hardware drivers supported by many enterprise access control platforms. These drivers allow the controller to communicate with the host system for configuration and event monitoring.
During installation, the MP4502 controller is configured with login credentials as part of the commissioning process. System administrators or integrators typically define or update these credentials when the controller is added to the access control system.
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