The Doug Fleenor Design T2-5 DMX Terminator plugs into the feed-through connector of the final DMX device on a control cable. Using the DMX Terminator improves signal reliability by preventing reflections and reducing ringing. The DMX Terminator features a "happy" LED that illuminates when a strong DMX512 signal is present. The Terminator also incorporates three Tranzorb transient absorbing diodes to suppress spikes that can appear on the control cable during electrical storms. Radio frequency interference (RFI) is bypassed to chassis ground via the .001uF capacitance of the Tranzorb diode. An economy version (T2) is also available that does not have the indicator, transient absorbers, or RFI suppression.