Bulletin 800T units have control circuit ratings with sealed switch contact blocks as follows: Stackable Sealed Switch Contact Ratings Minimum: 5V, 10 m A (digital); 24V, 1 m A (analog) Maximum continuous current 7th 2.5 A. To be valid as an E-Stop, the operators must use Color/Text option C from Table d and it must be placed in the last hole position in the enclosure.