The SBP300E service bypass panels are designed to provide systems operators with both ease of installation and bypass facilities. Custom input and output switches allow for off-line operation of the DP300E during maintenance and repair. The SBP300E also provides additional systems security. Unauthorized operation of the SBP300E is eliminated through an intelligent communication link between the DP300E and the SBP300E. Signal lamps indicate proper operation of the SBP300E.