This Digital Power Management system consists of two parts which are the starter kit transformer and one (PMM) power management module. The starter kit transformer is an easy field installed 24VAC transformer that must be installed in the NEMA 3R Smart Switches to enable the use of PMMs. The PMM power management module is a 50 amp, 24VAC actuated contactor housed in a NEMA 3R enclosure for indoor and outdoor installation applications. Through the use of the PMMs in conjunction with any of the 100-800 amp, single phase transfer switches, household or business loads can be intelligently managed enabling the use of a smaller, more efficient generator system. Up to four PMMs can be used with a single switch. Both the PMM Starter Kit and individual PMMs have a one year limited warranty. Check out the Power Management Module if you need additional PMMs for your system.