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ELK M1 Lighting/Thermostat Interface, Serial Port Expander


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WARNING: Cancer and Reproductive Harm –


3-In-1 Interface For Elk Controllers

The Elk M1 Lighting, Thermostat, Serial Interface Board (M1XSP) is a 3-in-1 interface module for lighting, thermostats, and serial port expansion.

  • As a lighting interface, the board allows the Elk M1 Gold Control Panel to support a range of lighting control products that use serial communications, such as UPB and ALC.
  • As a thermostat interface, the board enables integration of communicating thermostats made by RCS, Aprilaire, Leviton Security and Automation, and other advanced thermostat brands.
  • As a serial port expander, the interface board expands the RS-232 communication ports of the M1 control panel to support multiple connections to most any type of equipment that communicates using serial ASCII commands, like PCs and whole house subsystems.

Jumpers on the interface board select the appropriate application, connection, and protocol. Best of all, the board operates from the 4-wire (RS-485) M1 Keypad data bus, allowing RS-232 ports to be located long distances away from the controller.The Elk M1 Gold Control Panel supports up to seven M1XSPs. The communications baud rate is adjustable from 300 to 38,400 baud. The unit comes complete with cable and a black surface mountable housing.

  • Adapts the M1 to various lighting control products that use serial communication, such as ALC and UPB
  • Adapts HVAC communicating thermostats from RCS, Aprilaire and HAI
  • Expands the RS232 serial ports of the Elk M1 controller
  • Operates from the M1 data bus
  • DIP switch address settings
  • Jumper options and LED diagnostic indicator
  • On-board EOL bus termination jumper
  • Flash memory for firmware updating

M1 Cross Platform Control

Elk Products designs and manufactures premium quality electronic equipment for the professional security and automation installer. ELK's M1 Cross Platform Control Family integrates rock solid security and full featured automation providing convenient user interfaces and remote control options. M1 can be integrated with other manufacturers systems for complete control of home or business.


  • Manufacturer Part #: ELK-M1XSP
  • UPC: 762158550201
  • Maximum Expandable Ports: 7 Units
  • Operating Voltage: 12 VDC
  • Current Draw: 31mA
  • Housing Dimensions: 4.375 x 3.0 x 1.125 inches
  • Circuit Board Dimensions: 3.5 x 2.75 inches