Lenel Advanced Intelligent Dual Reader Controller LNL-M4420 (LNL-M4420)
The LNL-M4420 is an Advanced Dual Reader Controller that provides a single-board solution for interfacing up to 64 doors, plus auxiliary inputs and outputs, to an OnGuard® system.
The LNL-M4420 controller enables Ethernet connection directly from an entry location to the OnGuard server. In addition, other I/O and reader interface modules can be added on the controller’s two downstream ports, further expanding its capabilities. In the event of communication loss, the LNL-M4420 controller can maintain most of its local functionality until the server connection is restored.
The LNL-M4420 controller can act as an interface to building automation systems via the ASHRAE BACnet™ protocol. Through the OnGuard software, up to 63 total BACnet points can be defined. These can be a mix of physical inputs connected to the board and virtual outputs. Virtual outputs can be set and read from a connected BACnet client, allowing two-way state exchange with a variety of building control systems. This information can be used by both OnGuard and the external system for status reporting, and as inputs to control logic. Utilizing its secure 32-bit processor and a multiple-application operating system, the LNL-M4420 controller communicates upstream to the host computer through its Ethernet port.
The LNL-M4420 controller can store more than 1,000,000 cardholders in non-volatile flash memory (depending on configuration), and supports selective download for larger cardholder databases. The two downstream RS-485 two-wire ports can be used to connect up to 64 devices (64 doors) in many combinations of LNL-1100, LNL-1200, LNL-1300, LNL-1320, Schlage® PIM-400 wireless interface (OnGuard 7.5 and higher), or ASSA ABLOY Aperio® wireless devices. Each LNL-M4420 controller supports up to 16 different card formats. The LNL-M4420 controller also includes eight inputs — four designated for door interface support and four for generalpurpose inputs.
Controller Functionality- Support for DHCP and fixed-IP addressing
- DNS device naming through DHCP extended commands
- 96 MB of available on-board, non-volatile flash memory for badge data, plus dedicated storage for future apps and extensions
- Super Capacitor backed, non-volatile storage of 500,000 events
- Configurable option for Data-at-Rest encryption
- Firmware stored in flash memory
- Optional secondary Ethernet connection via USB adapter
- Biometric template storage ANSI/INCITS 378 templates
- Up to 32,000 access level permissions total (255 per badge)
- Elevator control support for up to 128 floors
- A dedicated input for cabinet-tamper and power-failure status
- Advanced Encryption Standard (AES) 256-bit algorithm for communications to downstream Lenel Series 3 reader and I/O interfaces; AES 128 bit encryption to Lenel Series 2 reader and I/O modules
- TLS 1.2 / 1.3 communication to OnGuard
- Support for Data1/Data0, Clock/Data, Unsupervised F2F and OSDP™-compatible RS-485 readers and keypads, including OSDP Secure Channel (SC) encrypted communications
- Optional onboard HID® pivCLASS® or Technology Industries EntryPoint™ FIPS-201 Embedded Authentication (consult LenelS2 for OnGuard and third-party requirements)