Philips Advance SmartMate Electronic fluorescent ballast is suitable to use with one/two 42-Watt CFTR42W/GX24Q lamp. It has voltage rating of 120/277-Volts and current rating of 0.33/0.78-Amp. Programmed start ballast with 0.97 ballast factor, has ignition time of 1.5 secs. It features metal M2 housing. Ballast accommodates wire of size 18-AWG. It offers 0.98 power factor. This ballast has series lamp connection. It operates at the frequency rating of 50 - 60-Hz. It measures 4.98-Inch x 3-Inch x 1.29-Inch. Ballast withstands temperature rating of 75 deg C. Ballast is UL listed, CSA certified, RoHS compliant and meets CEC/NOM/FCC standards.