audioShare Control Relay Module Installation Guide v00r01-090421.wpd
11
CRM Wiring Diagrams
Controlling Other Devices with the CRM
The following diagram is for connecting the CRM to control a device using normally open (N.O.)
or normally closed (N.C.) Operation. The device power supply is the one provided with whatever
device is to be controlled. It may or may not be integral to the controlled device.
Controlling the CRM with Other Devices
The CRM can also be controlled by external devices. Operation in this mode allows the CRM to
signal the rest of the
audioShare
®
system that an outside device is requesting attention. The
software can be configured by the user to respond to the external stimulus in whatever manner is
desired. A few examples of these options include sounding a warning signal that an event has
occurred; establishing an intercom or music broadcast between wall stations or between a door and
wall station(s); turning on or off a light, appliance, heating/air conditioning system, lawn sprinkler,
etc.; arming/disarming a security system. The possibilities are virtually unlimited.
CRMs accept either a normally open (N.O.) switch/relay closure or TTL voltage levels as input
stimuli. The following diagrams show examples of these types of interfaces.