Philips Advance SmartMate Electronic fluorescent ballast is suitable to use with one/two 40-Watt FT40W/2G11 lamp. It has voltage rating of 120/277-Volts and current rating of 0.25/0.57-Amp. Instant start ballast with 0.88 ballast factor, has ignition time of 0.1 sec. It features metal SC housing. Ballast accommodates solid wire of size 18-AWG. It offers 0.98 power factor. This ballast features parallel lamp connection. It operates at the frequency rating of 50 - 60-Hz. It measures 9.5-Inch x 1.7-Inch x 1.18-Inch. Ballast withstands temperature rating of 70 deg C. Ballast is UL listed, CSA certified, RoHS compliant and meets FCC standards.