One rackspace universal sequencing controller shall be Middle Atlantic Products model # USC-6R. Sequencing up and down shall be controlled locally via integral front system switch or remotely via single pole, double throw, center off, momentary switch. A rear mounted, three-position (up, common, down) terminal block shall accept connection of remotely controlled switch. Six yellow LED lights shall indicate channel status. One green LED light shall indicate power status. Remote status indication shall be connected via RJ-45 on the rear of the unit. The USC-6R shall accept daisy-chaining of up to three units to provide a maximum 18 channels of sequencing. A start delay switch on the rear of the unit shall facilitate programming of the daisy-chained, sequencing function. An interval delay switch shall adjust the sequencing interval to 1, 3 or 6 seconds between steps. Six controlling contact closure outputs included. Each USC-6R shall be capable of controlling up to 12 modules. The USC-6R shall be warrantied to be free from defects in material and workmanship under normal use and conditions for a period of three years. The USC-6R shall be UL Listed in the US and Canada.