Interfaces to Model 620A or 600A via a 3-foot 34-pin ribbon cable.

Outputs:
Relays 1-6=Events 1-6. The remaining 4 relays are jumper-selectable to function as: Relay 7=Event 7 or CH1 Limit, Relay 8=Event 8 or CH2 Limit, Relay 9=Event A or MTO and Relay 10=Event B or Alarm output.

115vac power required for on-board 24v relay power.

Relay information available here. 

Dimensions:  9 1/2" Long x 5 5/8" Wide x 2 1/4" high.