Intermatic EMDS Installation Manual

InstallIng the eMDs

The EMDS is a 100% digital center-off momentary switch 

that looks like an ordinary wall switch and provides a famil-

iar interface to the digital bus. This switch is NOT pre-pro-

grammed and must be addressed and programmed in the 

field. 

Placement and Wiring

Connect to the digital lighting control bus using Cat. 5 

cable with RJ45 connectors. Note all items on the bus 

must be “daisy chained” and the beginning and end 

items on the bus must have a terminator. If this is being 

added to the bus in the middle this is not a problem. If 

added at the end of the bus make sure the terminator 

is removed from the previously last item to the new last 

item on the bus. 

If the ON LINE LED is not flashing re-check connections 

and crimps. 

Address and define per instructions in the EM1400 

Quick Hook-Up Guide and System and Software Start-

Up Manual. This would be defined as a 2 button switch 

in the “PANEL SWITCH TYPES” Menu. 

Program the switch to control the appropriate loads. The 

top of the rocker is Button 1 and the bottom is button 

2. For more complete details on programming switches 

see the O & M Manual.

1.

2.

3.

4.

eMDs

DIgItal sWItCh

InstallatIOn

guIDe

lIghtIng COntROl eQuIPMent

InteRMatIC InCORPORateD • http://www.intermatic.com

EMDS 

Digital Switch