MOVR-1 is a pass trough interface board that enable most DDC controller to have local override switch On/Off/Auto switch Rising gate terminals for easy wiring ( up to 4x 18ga) Snap track or Direct connect terminal pins4 Amp 24VAC ratedOptional Header for direct DDC controller connection ( compatible with most 5mm screw-on terminals Like Tridium , KMC, neptronics, )