ANSI Code: M90
Circuitry Type: HX-HPF (with Cap.)
Input Voltage: 120/208240/277
Lamp Type: Standard Metal Halide
No. of Taps: Quad
Packaging: Core and Coil Ballast Only
Quick Ship: Yes
Warranty: 2 Years
http://keystoneballast.com/sites/keystoneballast.com/files/product_docs/MH-100X-Q_spec_sheet.pdf ; http://keystoneballast.com/mh-100x-q