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    Item #: CP4


    4-Series™ Control System

    A rack-mountable control system with a powerful 4‑Series™ control engine and numerous integrated control ports.


    Control Engine

    Crestron® 4-Series; real-time, preemptive multi-threaded/multitasking kernel; Transaction-Safe Extended FAT file system; supports up to 10 simultaneously running programs


    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 IP1, IPv4 or IPv6, Active Directory® service authentication, HTTPS web server, HTTPS web browser setup and 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, supports computer console via the front panel USB 2.0 device port

    RS-232/422/485 For 2-way device control and monitoring, COM port supports RS‑232 up to 115.2k baud with software handshaking, one port also supports RS‑422 or RS‑485 and hardware handshaking

    IR/Serial Supports 1-way device control via infrared up to 1.2 MHz or serial TTL/RS-232 (0–5 V) up to 115.2k baud


    SDRAM 2 GB

    Flash 8 GB

    Memory Card Supports SD and SDHC cards up to 32 GB

    External Storage Supports USB mass storage devices up to 1 TB

    Connectors and Card Slots

    RELAY OUTPUT 1–8 (2) 8-pin 3.5 mm detachable terminal blocks;

    Comprises (8) normally open, isolated relays;

    Rated 1 A, 30 VAC/VDC;

    MOV arc suppression across contacts

    I/O 1–8 (1) 9-pin 3.5 mm detachable terminal block;

    Comprises (8) 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

    IR - SERIAL OUTPUT 1–8 (2) 8-pin 3.5 mm detachable terminal blocks;

    Comprises (8) 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

    COM 1 (1) 5-pin 3.5 mm detachable terminal block;

    Bidirectional RS-232/422/485 port;

    Up to 115.2k baud; hardware and software handshaking support

    COM 2–3 (2) 3-pin 3.5 mm detachable terminal blocks;

    Bidirectional RS-232 ports;

    Up to 115.2k baud; software handshaking support

    MEMORY (1) SD memory card slot;

    Accepts one SD or SDHC card up to 32 GB for storage of log files

    USB (1) USB Type A connector, female;

    USB 2.0 port for storage devices

    LAN (1) 8-pin RJ45 connector, female;

    100/1000Base-TX Ethernet port

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

    Cresnet master port;

    Outputs power to Cresnet devices only if the included power pack is connected to the 24 VDC power input jack;

    Alternately functions as a Cresnet power input to power the unit from a Cresnet power supply;

    See "Power" section for additional specifications

    24VDC 2.0A (1) 2.1 x 5.5 mm DC power connector;

    24 VDC power input;

    PW-2420RU power pack included;

    Passes through to the NET port to power Cresnet devices;

    See "Power" section for additional specifications

    G (1) 6-32 screw;

    Chassis ground lug

    COMPUTER (front) (1) USB Type B connector, female;

    USB 2.0 computer console port;

    For setup only

    Controls and Indicators

    PWR (1) Green LED, indicates operating power is supplied from the power pack or Cresnet power supply

    NET (1) Amber LED, indicates communication with Cresnet devices

    MSG (1) Red LED, indicates control processor has generated an error message

    HW-R (1) Recessed push button for hardware reset

    SW-R (1) Recessed push button for software reset

    LAN (rear) (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 Power pack or Cresnet (connect only one)

    Power Pack (included) Input: 100–240 VAC, 50/60 Hz;

    Output: 2.5 A @ 24 VDC;

    Model: PW-2420RU

    Cresnet Power Usage 15 W (0.625 A @ 24 VDC) when powered by a Cresnet power supply only

    Available Cresnet Power 24 W (1 A @ 24 VDC) when powered by the included power pack only

    Power Consumption 15 W (not including any connected Cresnet devices)


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

    Humidity 10% to 90% RH (noncondensing)

    Heat Dissipation 50 BTU/hr


    Chassis Metal, aluminum, black finish

    Faceplate Extruded metal, black finish, polycarbonate label overlay

    Mounting Freestanding or 1 RU 19-in. rack-mountable (adhesive feet and rack ears included)


    Height 1.70 in. (44 mm) without feet

    Width 17.28 in. (439 mm);

    19.00 in. (483 mm) with rack ears

    Depth 6.56 in. (167 mm)


    3.12 lb (1.42 kg)


    Regulatory Model: M201903003;

    UL® Listed for US & Canada, CE, IC, FCC Part 15 Class B digital device