RayJet Solid State Timer For CE Air Preheater Exterior Rated Hoffman Metal Box 10" Tall x 8" Wide x 4.5" Deep I have no way of testing this item. It is as is in four parts only although everything might work for all I know. I can answer no technical questions. The metal box is exterior grade by Hoffman Industries and would be good for projects such as solar installations. Please see our store for similar items. We combine shipping. - - - This is what's AI had to say about this item: Introducing the RayJet Solid State Timer, designed to control the CE Air Preheater and Exterior Rated Hoffman Metal Box. This timer is suitable for industrial applications and has a mounting style of bolt-on. It is compatible with 4 or more phases and has a current type of 24V AC/DC. The timer has a coil voltage of 101-150V and contact material of ABS/plastic. It also features a timer and is applied in the categories of Business Industrial, Electrical Equipment Supplies, Relays, and General Purpose Relays. The item length is 4.5", item height is 10 inches, and item width is 8 inches.