Price: $2,300.00
    Availability: In Stock
    Usually ships In 24 - 48 hours

    Item #: MC4-I


    4‑Series Control System
    Provides a secure, high-performance, cost-effective control processor and interface. A small factor and low profile installation make it perfect for use in single-room systems, small to medium‑sized homes and offices, and MDUs (multidwelling units). Provides a built-in gateway for pairing infiNET EX® and ER wireless devices.


    Control Engine

    Crestron 4-Series; real-time, preemptive multi-threaded/multitasking kernel; Transaction-Safe Extended FAT file system; single program support out of the box; supports up to 10 simultaneously running programs (license required1)

    Wired Communications

    Ethernet 100/1000 Mbps, auto‑switching, auto‑negotiating, auto‑discovery, full/half duplex, industry-standard TCP/IP stack, UDP/IP, CIP, DHCP, SSL, TLS, SSH, SFTP (SSH File Transfer Protocol), FIPS 140-2 compliant encryption, IEEE 802.1xX, SNMP, BACnet™ and IP3, IPv4 or IPv6, Active Directory® service authentication, HTTPS web server, HTTPS web browser setup and Crestron XiO Cloud™ client, SMTP email client

    Cresnet® Network Cresnet master mode

    USB Supports USB mass storage class devices via the rear panel USB 2.0 host port

    RS-232 For 2-way device control and monitoring, COM port supports RS 232 up to 115.2k baud with software handshaking

    IR Supports 1 way device control via infrared up to 1.2 MHz

    Wireless Communications1

    RF Transceiver infiNET EX® network 2-way RF, 2.4 GHz ISM Channels 11-26 (2400 to 2483.5 MHz), default channel 15; IEEE 802.15.4 compliant

    Range 50 ft (15 m) to nearest mesh network device(s), subject to site-specific conditions and individual device capabilities, range between floors or ceilings is limited to one level2

    NOTE: Do not rack mount or stack multiple units when using wireless communications. Use care when positioning the device to avoid interference from nearby RF devices, obstructions, and metal surfaces.


    SDRAM 1 GB

    Flash 8 GB

    Memory Card Supports microSD cards up to 32 GB

    External Storage Supports USB mass storage devices up to 1 TB

    Connectors and Card Slots

    MEMORY (1) microSD memory card slot;

    Accepts one microSD card up to 32 GB for storage of log files

    G (1) 6-32 screw;

    Chassis ground lug

    USB (1) USB Type A connector, female;

    USB 2.0 port for storage devices

    IR IN (1) 3.5 mm TRS mini phone jack;

    For connecting CNXRMIRD IR receiver;

    Allows IR wireless control from Crestron and third‑party remotes using RC‑5 IR commands

    RELAY (1–2) (1) 4-pin 3.5 mm detachable terminal block;

    Comprises (2) normally open, isolated relays;

    Rated 1 A, 30 VAC/VDC;

    MOV arc suppression across contacts

    VER SI (1–2) (1) 3-pin 3.5 mm detachable terminal block;

    Comprises (2) Versiport digital input/output or analog input ports (referenced to GND);

    Digital Input: Rated for 0–24 VDC, input impedance 20k Ω, logic threshold >3.125 V low/0 and <1.875 V high/1;

    Digital Output: 250 mA sink from maximum 24 VDC, catch diodes for use with real world loads;

    Analog Input: Rated for 0–10 VDC, protected to 24 VDC maximum, input impedance 21k Ω with pull-up resistor disabled;

    Programmable 5 V, 2k Ω pull-up resistor per pin

    COM (1) 3-pin 3.5 mm detachable terminal block;

    Bidirectional RS-232 port;

    Up to 115.2k baud; software handshaking support

    IR (1–4) (2) 4-pin 3.5 mm detachable terminal blocks;

    Comprises (4) IR output ports;

    IR output up to 1.2 MHz;

    1-way Serial TTL/RS-232 (0–5 V) up to 115.2k baud

    IRP2 IR emitters sold separately

    EX/ER (1) Connection for supplied antenna

    CRESNET (1) 4-pin 3.5 mm detachable terminal block;

    Cresnet master port1;

    Outputs power to Cresnet devices;

    See "Power" section below for additional details

    LAN (1) 8-pin RJ-45 connector, female;

    100/1000Base-TX Ethernet port;

    PoE (Power over Ethernet) PD (Powered Device) port

    Controls and Indicators

    PWR (1) Bicolor green/amber LED, indicates operating power is present;

    Amber indicates that the device is booting and is not yet ready to operate;

    Green indicates that the device is ready to operate

    HW-R (1) Push button, initiates hardware reset

    SW-R (1) Push button, initiates software reset

    ACQUIRE (1) Recessed push button with red LED, used to set up connections with wireless devices

    LAN (1) Bicolor green/amber and (1) Amber LEDs;

    Green/amber LED indicates Ethernet link status and connection speed;

    Amber LED indicates Ethernet activity


    Power Source Options PoE (Power over Ethernet)

    Power over Ethernet IEEE 802.3at Type 1 (802.3af compatible) Class 0 (12.95 W) PoE Powered Device

    Available Cresnet Power 2.5 W

    Power Consumption 7 W typical


    Temperature 41 to 113 °F (5 to 45 °C)

    Humidity 10 to 90% (noncondensing)

    Heat Dissipation 24 BTU/hr


    Chassis Metal, black finish, with (2) integral mounting flanges; vented top, sides, and bottom

    Mounting Freestanding, surface mount, attach to a single rack rail, or 1 RU 19‑in. rack mountable (rack ears included)


    Height 1.07 in. (27 mm)

    Width 10.15 in. (258 mm)

    Depth 5.11 in. (130 mm)


    1.0 lb (454 g)

    Additional Information

    The 4 Series Control System (MC4) provides a secure, high performance, cost-effective control processor and interface. Its small form factor and versatile mounting options makes it ideal for smaller systems such as single room media systems, small to medium sized homes and offices, and MDUs (multidwelling units). The MC4 includes a built in infiNET EX® and ER wireless gateway for acquiring wireless devices as well as numerous control ports for controlling wired devices.

    4-Series Control Engine

    The MC4 comes equipped with an enterprise-grade 4‑Series multicore CPU processor, which delivers a sizable speed and performance increase compared to 3‑Series® control processors for handling the increasing demands of an advanced automated system. Crestron 4-Series delivers a dynamic and secure control system platform capable of faithfully managing a room full of disparate technologies.

    Reliable networking and IP control afford seamless integration with other systems and devices, with add-on control capability using Crestron touch screens, wireless remotes, and mobile device apps, as well as remote management through Crestron Fusion® software and the Crestron XiO Cloud™ service.

    Modular Programming Architecture

    The MC4 is designed to run a single program out of the box. The optional modular programming architecture add-on allows the MC4 to run up to ten programs simultaneously.1 Programmers can develop and run independent, device‑specific programs, enabling each program to be optimized for a specific function and allowing for changes to be made to one program without affecting the whole system.

    Onboard Control Ports

    Through a full complement of onboard control ports, the MC4 can be integrated with a wide variety of audio, video, lighting, motorized shades, thermostats, door locks, sensors, security systems, and other equipment.

    Gigabit Ethernet provides an interface for connecting to the building network and controlling Crestron AV switchers, audio processors, power controllers, and other IP controllable equipment.

    Cresnet® network connectivity provides support for Crestron lighting dimmers, motorized shades, sensors, thermostats, keypads, and more.

    Onboard RS‑232, IR, relay, and Versiport I/O control ports enable direct integration with all types of third‑party equipment.

    Expanded connectivity can be provided to the MC4 via Crestron control port expansion modules, Ethernet to Cresnet bridges, wired Ethernet I/O extenders, or Wi-Fi® network I/O extenders (all sold separately).

    Built-In Wireless Gateway

    The MC4 also provides a built-in infiNET EX wireless gateway that allows wireless infiNET EX and ER (extended range) devices to be paired directly to the control system.

    infiNET EX Technology

    Integrated infiNET EX technology provides an easy and cost-effective way to control various functions using infiNET EX based wireless products. infiNET EX wireless technology provides 2‑way RF communications throughout a structure without the need for physical control wiring. Employing a 2.4 GHz mesh network topology, nearly every infiNET EX device on the network acts as an expander, relaying wireless commands between the gateway and all the other EX devices on the network to ensure that every command reaches its intended destination without disruption.2

    Extended Range (ER) Technology

    Crestron Extended Range (ER) wireless technology enables compatibility with certain Crestron wireless touch screens and handheld remotes. Crestron ER operates in the same 2.4 GHz spectrum as infiNET EX and is optimized specifically for use with wireless touch screen devices to ensure dependable bidirectional RF communications.

    IR Wireless Option

    When equipped with the optional CNXRMIRD IR Receiver, the MC4 affords a low-cost IR wireless control solution using a universal IR remote.

    Crestron Fusion Room Monitoring and Scheduling

    Crestron Fusion provides an integrated platform for creating smart buildings that save energy and enhance worker productivity. As part of a complete managed network in a corporate enterprise, college campus, convention center, or any other facility, the MC4 works with Crestron Fusion to enable remote scheduling, monitoring, and control of rooms and technology from a central help desk or mobile app. It also enables organizations to reduce energy consumption by tracking real-time usage and automating control of AV, lighting, shades, and HVAC. For more information about Crestron Fusion, visit

    Crestron XiO Cloud Provisioning and Management

    The MC4 is compatible with the Crestron XiO Cloud service, which is an IoT (Internet of Things) based platform for remotely provisioning, monitoring, and managing Crestron devices across an enterprise or an entire client base. Built on the Microsoft® Azure® software platform and utilizing Microsoft's industry‑leading Azure IoT Hub technology, Crestron XiO Cloud enables installers and IT managers to deploy and manage thousands of devices in the time it previously took to manage just one. Unlike other virtual machine‑based cloud solutions, Azure services provide unlimited scalability to suit the ever‑growing needs of an enterprise. For more information, visit

    Enhanced Enterprise-Grade Security

    The MC4 is an enterprise‑class control processor that can be deployed across hundreds of spaces and set up easily using a web browser, Crestron Toolbox™ software, or Crestron XiO Cloud. It employs standard network security protocols, including 802.1X network access control, Active Directory® service authentication, SSH, TLS, and HTTPS to ensure reliability and compliance with your organization’s IT policies.

    The MC4 is configured to meet Crestron's enhanced security standards right out of the box. The MC4 ships with authentication enabled and requires that an administrator account be created before access is granted to device configuration and control interfaces.

    SNMP V3 Support

    Built-in SNMP V3 support enables integration with third-party IT management software, allowing network administrators to manage and control Crestron systems on the network in an IT-friendly format.

    BACnet Support

    Native support for the BACnet™ communication protocol provides a direct interface to third-party building management systems over Ethernet, simplifying integration with HVAC, security, and other systems. Using BACnet, each system runs independently but communicates together on one platform.3

    PoE Network Powered

    Using PoE technology, the MC4 gets its operating power directly through the LAN wiring, eliminating the need for a local power supply or dedicated power wiring. A PoE injector (PWE‑4803RU) simply connects in line with the LAN cable at a convenient location. Crestron PoE switches (CEN‑SW‑POE-5 or CEN‑SWPOE‑16) may also be used to provide a total networking solution with built-in PoE. All PoE injectors and switches are sold separately.

    NOTE: Ethernet speed is limited to 100 Mbps when using the PWE-4803RU.

    Versatile Mounting Options

    The MC4 mounts conveniently to a wall, ceiling, or other flat surface. Its compact, surface-mountable form factor fits easily behind a flat panel display, beneath a tabletop, or inside other furniture, making it ideal for single‑room systems. It can even be installed into an equipment rack using the included rack ears or can be attached to a single rack rail.

    Key Features

    Compact 4-Series controller with 1 GB SDRAM and 4 GB Flash memory

    Embedded 4‑Series multicore CPU processor

    iPhone®, iPad®, and Android® device control app support

    XPanel computer and web based control

    Modular programming architecture (optional)

    Onboard IR, COM, I/O, relay, Cresnet® network, and high‑speed gigabit Ethernet control ports

    High-speed USB 2.0 host port and rear panel memory card slot

    Built-in infiNET EX® and ER wireless network gateway

    Crestron Fusion® software room monitoring and scheduling support

    Crestron XiO Cloud™ service provisioning and management support

    Enterprise‑class network security and authentication

    SNMP V3 remote IT management support

    Native BACnet™ network/IP support

    Installer setup via software, web browser, or cloud

    IPv6 ready

    PoE (Power over Ethernet) powered

    Rack or surface mountable