Control Engine
Crestron® 3‑Series® control engine; real-time, preemptive multithreaded/multitasking kernel; Transaction-Safe Extended FAT file system; supports up to 10 simultaneously running programs (license required 1), preloaded .AV Framework™ base program
Memory
DDR3 SDRAM 256 MB
Flash 4 GB
External Storage Supports USB mass storage devices
Communications
Ethernet 100 Mbps, autoswitching, autonegotiating, autodiscovery, full/half duplex, industry-standard TCP/IP stack, UDP/IP, CIP, DHCP, SSL, TLS, SSH, SSH File Transfer Protocol (SFTP), FIPS 140-2 compliant encryption, IEEE 802.1X, SNMP, BACnet network / IP 3, IPv4 or IPv6, Active Directory® service authentication, web server, XiO Cloud® client, SMTP email client, IEEE 802.3af and 802.3at Type 1 compliant
Cresnet® Network Cresnet® server mode
USB Supports computer console and USB mass storage devices via USB On‑The‑Go (OTG) port
RS-232/422/485 For 2‑way device control and monitoring, supports RS‑232, RS‑422, or RS‑485 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 (0–5V) up to 115.2k baud
Connectors
DIGITAL IN 1–2 (1) 3‑pin 3.5 mm detachable terminal block;
Comprises (2) digital inputs (referenced to GND);
Input Voltage Range: 0–24VDC;
Logic Threshold: ≥ 2.0VDC 1/High, ≤1.1VDC 0/Low;
Input Impedance: 2.2k Ω pulled up to 5V
RELAY 1–2 (1) 4‑pin 3.5 mm detachable terminal block;
Comprises (2) normally open, isolated relays;
Rated 1A, 30VAC/DC;
MOV arc suppression across contacts
IR 1–2 (1) 4‑pin 3.5 mm detachable terminal block;
Comprises (2) IR/Serial output ports;
IR output up to 1.2 MHz;
1-way serial TTL/RS-232 (0–5V) up to 115.2k baud
COM (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
G (1) 4‑40 screw;
Chassis ground lug
USB-OTG (1) USB Type Mini‑AB female;
USB OTG port for computer console and USB mass storage devices;
6 ft (1.83 m) A male to Mini-B male cable, and A female to Mini-A male adapter, included
LAN PoE (1) 8‑pin RJ-45 female;
100BASE-TX Ethernet port, Power over Ethernet compliant
NET (1) 3‑pin 3.5 mm detachable terminal block;
Cresnet server port (data only, no power2)
Controls and Indicators
PWR (1) Dual‑color green/amber LED, indicates operating power supplied via PoE, turns amber while booting and green when operating
NET (1) Amber LED, indicates communication with the Cresnet system
MSG (1) Red LED, indicates processor has generated a logging message
LAN PoE (2) LEDs, green LED indicates Ethernet link status, amber LED indicates Ethernet activity
HW-R (1) Recessed miniature push button for hardware reset
SW-R (1) Recessed miniature push button for software reset
Power
Power over Ethernet IEEE 802.3at Type 1 (802.3af compatible) Class 0 (12.95 W) PoE Powered Device
NOTE: Does not use or supply any Cresnet power.
Environmental
Temperature 32° to 104°F (0° to 40°C)
Humidity 10% to 90% RH (noncondensing)
Heat Dissipation 17 BTU/hr
Construction
Enclosure IFE micro form factor, black and blue plastic
Mounting Freestanding, stackable, surface mount, or 35 mm DIN EN 60715 rail mount; occupies 8 DIN module spaces (144 mm);
Surface/ DIN rail mounting bracket included, optional rack mount and pole mount kits sold separately
Dimensions
Height 1.36 in. (35 mm);
1.77 in. (45 mm) with bracket
Width 5.04 in. (128 mm);
5.36 in. (137 mm) with bracket
Depth 2.86 in. (73 mm)
Weight
6.4 oz (180 g)
Compliance

Regulatory Model: RMC3
CE, IC, FCC Part 15 Class B digital device
Click here to search product certificates.
  1. Enabling Modular Programming Architecture (MPA) on the RMC3 requires the purchase of one SW‑RMC3‑10PROG license. The license enables support for running up to 10 simultaneous programs on a single RMC3. The license is not required if only one program is run on the RMC3. To obtain a license for the RMC3, complete the Request for SW‑RMC3‑10PROG License form. For questions, contact license@crestron.com.
  2. The NET (Cresnet) port on the RMC3 is a 3-pin connector which provides connectivity for Cresnet data only, not power. The Cresnet power conductor does not terminate to the RMC3. An external Cresnet power supply is required to provide power for Cresnet devices.
  3. A BACnet and IP license is required. A free license is available to support up to 50 BACnet objects on a single 3‑Series control system. Enabling support for more than 50 BACnet objects requires the purchase of one SW‑3SERIES‑BACNET‑50+ license. The RMC3 supports a maximum of 500 BACnet objects when dedicated for BACnet use only. Actual capabilities are contingent upon the overall program size and complexity. To obtain the license, visit www.crestron.com/bacnetlicense.

This product may be purchased from select authorized Crestron dealers and distributors. To find a dealer or distributor, please contact the Crestron sales representative for your area. A list of sales representatives is available online at www.crestron.com/How-To-Buy/Find-a-Representative or contact us for additional information by visiting www.crestron.com/contact/our-locations for your local contact.

The original language version of this document is U.S. English.
All other languages are a translation of the original document.

The product warranty can be found at www.crestron.com/warranty.

The specific patents that cover Crestron products are listed online at www.crestron.com/legal/patents.

Certain Crestron products contain open source software. For specific information, please visit www.crestron.com/opensource.

Crestron, the Crestron logo, 3‑Series, 3-Series Control System, .AV Framework, Cresnet, Crestron Fusion, Crestron Toolbox, Smart Graphics, and XiO Cloud 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. AirPlay, App Store, Apple, Apple Music, Apple TV, HomeKit, iPad, iPhone, iPod, iPod touch, iTunes, Macintosh, and Safari are either trademarks or registered trademarks of Apple, Inc. in the United States and/or other countries. Android, Chrome, Google Assistant, Google Calendar, and Google Play are either trademarks or registered trademarks of Google Inc. in the United States and/or other countries. Active Directory, ActiveX, Azure, Excel, Internet Explorer, Microsoft, Microsoft Edge, Microsoft Intune, Microsoft Teams, NetMeeting, Office 365, Outlook, PowerPoint, Skype, SQL Server, Windows, and Windows Media are either trademarks or registered trademarks of Microsoft Corporation 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. ©2023 Crestron Electronics, Inc.