Command Access MLRK1-VD Motorized Latch Retraction Kit — For Von Duprin 33/35 & 98/99 Series Exit Devices (Field Install, UL, 3-Year Warranty)Upgrade Von Duprin 33 35 & 98 99 Exit Devices to Motor Driven Latch Retraction The Command Access MLRK1 VD is a drop in, field install motorized latch retraction kit for Von Duprin 33 35 and 98 99 Series exit devices. It converts a mechanical device to an electrified latch pullback solution with Push to Set (PTS) fine adjustment, a built in REX switch, and the next gen MM5 Smart Module for onboard diagnostics and efficient power management. UL Listed