E240SR120G01 : Standard Lighting Electronic Linear Fluorescent Ballast, 120V | AMRE Supply
Electrical ballast - Wikipedia
Fluorescent Light Ballast Types Choose the right transformer or ballast
Solo Lights IG13-20EL Electronic 120V Fluorescent Ballast, Easy Install & Energy Saving, Great for Aquarium & Terrarium Lamp Lighting, Multi-Watt, UL & CUL, Operates Linear Fluorescent Lamps., Power Current Equipment - Amazon