One constant ON green LED per channel to indicate OK condition of monitor, transmitter, and field wiring. The monitor can be placed in any other available rack position. Rack size will depend on the number of monitors used. At least one relay module must be ordered with each 3300 System. AND voting logic is not available with Quad relays.
Bold text indicates options as shipped from the factory.
For Quad Relays, AND voting logic must be done externally by wiring the contacts in series.