Crestron Control System® w/infiNET EX® & ER Wireless Gateway Model MC3



3-Series Control System® w/infiNET EX® & ER Wireless Gateway

The MC3 is a compact Crestron® 3-Series Control System® featuring built-in infiNET EX® & ER wireless technology and on-screen display (OSD) capability.

Control Engine

Crestron 3-Series; real-time, preemptive multi-threaded/multitasking kernel; Transaction-Safe Extended FAT file system; supports up to 10 simultaneously running programs


Flash 2 GB
External Storage supports USB mass storage devices up to 1 TB

Wired Communications

Ethernet 10/100 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 802.1X, SNMP, BACnet/IP [4], IPv4 or IPv6, Active Directory authentication, IIS v.6.0 Web Server, SMTP e-mail client
Cresnet Cresnet master mode
USB Supports USB mass storage class devices via rear panel USB 2.0 host ports, supports computer console via front panel USB 2.0 device port
RS-232 Supports 2-way device control and monitoring up to 115.2k baud with hardware and software handshaking
IR/Serial Supports 1-way device control via infrared up to 1.2 MHz or serial TTL/RS-232 (0-5 Volts) up to 115.2k baud; supports CNXRMIRD IR Receiver [3]

Wireless Communications

RF Transceiver infiNET EX® & ER 2-way RF, 2.4 GHz ISM Channels 11-26 (2400 to 2483.5 MHz), default channel 15; IEEE 802.15.4 compliant
infiNET EX Range (typical) 150 ft (46 m) indoor, 250 ft (76 m) outdoor to nearest mesh network device(s); subject to site-specific conditions and individual device capabilities [1]
ER Range (typical) 100 to 200 ft (33 to 66 m) maximum indoor, 1000 ft (305 m) outdoor, subject to site-specific conditions
ER Roaming Supports roaming amongst up to 8 gateways [5]

Wireless Device Support

infiNET EX Devices Supports all Crestron and third-party infiNET EX devices including HR-100HR-150, and MLX-3 handheld remotes
infiNET EX Expanders Supports Crestron infiNET EX expander models CLW-EXPEX and GLA-EXPEX
ER "Extended Range" Devices Supports Crestron wireless touch screen models TSR-302TST-600TST-602, and TST-902[2]
Maximum Devices Allowed [6]
infiNET EX Devices*
infiNET EX Expanders
ER "Extended Range" Devices
*Inclusive of a maximum of six MLX-3 remotes

Graphics Engine (OSD)

Built-in customizable control pages, scrolling menus, and dynamic objects

Video (OSD)

Output Signal Types Component (YPbPr), Composite
Output Formats Progressive 480p or 576p, interlaced NTSC or PAL
Output Resolutions, Component 720x480@30Hz (480i), 720x576@25Hz (576i), 720x480@60Hz (480p), 720x576@50Hz (576p)
Output Resolutions, Composite 480i, 576i


Functions Audio file playback, audio signal pass-thru w/mute during file playback
Audio File Formats WAV (8 & 16 bit PCM, mono & stereo, 8 – 44.1 kHz sampling rates), MP3, WMA
Input/Output Signal Types Analog stereo
Analog-To-Digital/Digital-to-Analog Conversion 24-bit 48 kHz
Performance (pass-thru) Frequency Response: 20 Hz to 20 kHz ±0.2 dB;
S/N Ratio: >93 dB, 20 Hz to 20 kHz A-weighted;
THD+N: <0.01%, 20 Hz to 20 kHz;
Stereo Separation: >91 dB


AUDIO IN, L – R (2) RCA female;
Unbalanced stereo line-level audio input;
Input Level: 2 Vrms maximum;
Input Impedance: 7k Ohms nominal
AUDIO OUT, L – R (2) RCA female;
Unbalanced stereo line-level audio output;
Output Level: 2 Vrms maximum;
Output Impedance: 100 Ohms nominal
VIDEO OUT, Y Pb Pr (3) RCA female;
Component (YPbPr) video output;
Output Level: 1 Vp-p nominal (Y), 0.7 Vp-p nominal (PbPr);
Output Impedance: 75 Ohms nominal
Composite video output;
Output Level: 1 Vp-p nominal;
Output Impedance: 75 Ohms nominal
IR 1 – 5 (5) 3.5 mm mini-phone jacks;
IR/Serial output ports;
IR output up to 1.2 MHz;
1-way serial TTL/RS-232 (0-5 Volts) up to 115.2k baud
IR IN (1) 3.5 mm TRS mini-phone jack;
For connection of the CNXRMIRD IR receiver [3];
Allows IR wireless control from Crestron and third-party remotes using RC-5 IR commands
COM 1 – 2 (2) DB9 male;
Bidirectional RS-232 ports;
Up to 115.2k baud; hardware and software handshaking support
LAN (1) 8-pin RJ45 jack;
10Base-T/100Base-TX Ethernet port
USB 1 – 2 (2) USB Type A female;
USB 2.0 ports for storage and mouse/keyboard devices
G (1) 6-32 screw;
Chassis ground lug
RELAY 1 – 2 (1) 4-pin 3.5 mm detachable terminal block;
Comprises (2) normally open, isolated relays;
Rated 1 Amp, 30 Volts AC/DC;
MOV arc suppression across contacts
INPUT 1 – 2 (1) 3-pin 3.5 mm detachable terminal block;
Comprises (2) programmable digital inputs (referenced to GND);
Input Voltage Range: 0-24 Volts DC;
Logic Threshold: ≥1.2 Volts DC active/high, ≤0.46 Volt DC inactive/low;
Input Impedance: 2.2k Ohms pulled up to 5 Volts
NET (1) 4-pin 3.5 mm detachable terminal block;
Cresnet master port;
Outputs power to Cresnet devices if a power pack is connected to the 24VDC power input jack;
Receives Cresnet network power if no power pack is connected to the 24VDC power input jack;
See “Power” section for additional specifications
24VDC 2A (1) 2.1 x 5.5 mm DC power connector;
24 Volt DC power input;
PW-2420RU power supply included;
Passes through to NET port to power Cresnet devices;
See “Power” section for additional specifications
COMPUTER (front) (1) USB Type B female;
USB 2.0 computer console port;
For setup only
Antenna (front) (1) Connection for supplied antenna

Controls & Indicators

PWR (1) Green LED, indicates operating power supplied from power pack or Cresnet network
NET (1) Amber LED, indicates communication with the Cresnet system
HW-R (1) Recessed pushbutton for hardware reset
SW-R (1) Recessed pushbutton for software reset
ACQUIRE (1) Recessed pushbutton with red LED, used to set up connections with wireless devices
ACTIVITY (1) Red LED, indicates wireless RX and TX data activity
LAN (rear) (2) LEDs, green LED indicates Ethernet link status, amber LED indicates Ethernet activity


Power Pack 2.0 Amps @ 24 Volts DC;
100-240 Volts AC, 50/60 Hz power pack, model PW-2420RUincluded
Available Cresnet Power 35 Watts (1.46 Amps @ 24 Volts DC) when using power pack
Cresnet Power Usage 9 Watts (0.375 Amps @ 24 Volts DC) when using Cresnet network power


Temperature 41° to 113° F (5° to 45° C)
Humidity 10% to 90% RH (non-condensing)
Heat Dissipation 31 BTU/hr


Chassis Aluminum w/polycarbonate label overlay
Faceplate Plastic w/polycarbonate label overlay
Mounting Freestanding (adhesive feet included)


Height 2.30 in (59 mm);
2.25 in (58 mm) without feet
Width 8.12 in (207 mm)
Depth 6.74 in (171 mm) including antenna


2.5 lb (1.2 kg)

  1. The total range of an infiNET EX wireless network is dependent on the placement and capabilities of each network device. Employing a 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. Each infiNET EX device that is added to the network effectively increases the range and stability of the entire network by providing multiple redundant signal paths. The wireless range between any two EX devices is typically up to 150 ft (46 m) indoors. Battery-powered infiNET EX devices do not provide expander functionality, and may have reduced RF range capabilities. Consult the specifications for each network device to confirm its actual wireless capabilities. Crestron also offers dedicated infiNET EX expanders (models CLW-EXPEX or GLA-EXPEX, sold separately), which may be deployed to fill gaps in coverage and extend the wireless range of the mesh network. infiNET EX expanders are only for infiNET EX networks and offer no benefit to the performance of ER devices. A maximum of five infiNET EX expanders may be deployed on an infiNET EX network.
  2. The MC3 is not compatible with TPS-6X or UFO-WPR-3ER model remotes. For these devices, please use the dedicated ER gateway model CEN-ERFGW-POE.
  3. Item(s) sold separately.
  4. License required. The MC3 supports a maximum of 500 BACnet objects when dedicated for BACnet use only. Actual capabilities are contingent upon the overall program size and complexity.
  5. Roaming capability using multiple gateways is for ER devices only. infiNET EX utilizes only one gateway and does not support roaming.
  6. Best practices suggest configuring the system with no more than 50% of the maximum devices allowed per gateway. Additional gateways may be deployed to support more devices, with a maximum of 16 gateways permitted on a complete system (RF conditions allowing).

This product may be purchased from an authorized Crestron dealer. To find a dealer, please contact the Crestron sales representative for your area. A list of sales representatives is available online at or by calling 800-237-2041.

The specific patents that cover Crestron products are listed online at:

Certain Crestron products contain open source software. For specific information, please visit

Crestron, the Crestron logo, 3-Series, 3-Series Control System, Cresnet, Crestron Control, Crestron Fusion, Crestron Green Light, Crestron Toolbox, infiNET EX, and Smart Graphics are either trademarks or registered trademarks of Crestron Electronics, Inc. in the United States and/or other countries. BACnet and the BACnet logo are either trademarks or registered trademarks of American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. in the United States and/or other countries. Apple, iPad, iPhone, and iPod are either trademarks or registered trademarks of Apple Inc. in the United States and/or other countries. IOS is either a trademark or registered trademark of Cisco Technology, Inc. in the United States and/or other countries. Android is either a trademark or registered trademark of Google, Inc. in the United States and/or other countries. Other trademarks, registered trademarks, and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Crestron disclaims any proprietary interest in the marks and names of others. Crestron is not responsible for errors in typography or photography. Specifications are subject to change without notice. ©2016 Crestron Electronics, Inc.