9 Volt AC Power Transformer @ 500 mA With Center Tap.
Classic style with metal bracket with mounting holes.
Center tapped lead provides 1/2 that voltage from the center to either lead wire.
Specifications: Input Voltage: 120 VAC; Related Voltage: 9 VAC; Rated Current: 500 mA
Mounting hole center to center: 2.08"; Height: 1.4" ; Width: 1.7"; Depth: 1.5"