Triplett 4412-04 Panel Meter Assembly No. 547944-4 This item was purchased from an inventory surplus sale. We do not know the history of it. The model number and assembly number both use to end with the number "2", however, both have been written over with the number "4". And so there may have been an update or modification done to this unit. It is also labeled, "117 VAC, range 200V". It is in good cosmetic condition. We are not able to test it. It only comes with what is shown in the pictures. S616-18 d 8110178 rl fdk 80108228