Generac 6199 Power Management Module 24V Starter Kit Generac transformer for NEMA 3R Smart Switches 24VAC actuated PMM This transformer must be installed in the NEMA 3R Smart Switches to enable the use of PMMs Used in conjunction with Generac 6186 PMM 50 amp 24VAC actuated contactor housed in a NEMA 3R The Starter Kit and PMM will only work with the RTSR and RTSY transfer switches