The 51C31TCD2BF010 Single-end Pressure Switch is ranged for 30 Torr, has an 4 VCR-style female fitting, 20-30 VDC input voltage, energizes with pressure below the set point, 2 foot shielded cable with flying leads for electrical connection, and accuracy of 0.5% of Full Scale. It offers accurate and reliable protection for vacuum vacuum/pressure processes for applications where a DC signal output is not required. It is referenced to vacuum.