Specifications include, but are not limited to: Digital Tap-Changer Controller to control, manually or automatically, the On Load Tap-Changer of a substation power transformer. This controller shall have the following features: 1. 60 Hz Operating Frequency 2. 20 character by 2 row LCD display 3. Serial communication connections: RS-232, RS-485, and ST fiber 4. Ethernet (10/100 Base T) connection: ST fiber The controller and panels will be subject to an annual ambient temperature variance of -25° C to +45° C, 20 EA; Mounting panel for a Beckwith series M-2001 Digital Tap-Changer Controller. This mounting panel shall have the following features: 1. SCAMP SCADA controlled Auto/Manual Pushbutton 2. SCADA cut-out switch The controller and panels will be subject to an annual ambient temperature variance of -25° C to +45° C, 10 EA; Mounting panel with Auto/Manual Switch Detection Cable for a Beckwith series M-2001 Digital Tap-Changer Controller. The controller and panels will be subject to an annual ambient temperature variance of -25° C to +45° C, 10 EA