White Rodgers 90-T40M1 Multi Mount Energy Limiting Transformer, 120 V Leads Primary, 24 V Leads Secondary Emerson Climate Technologies, the parent company of White Rodgers, is an industry leader in delivering business-advancing and industry-revolutionizing innovations. Their strive to help individuals and companies meet the challenges of change and the demands of adaptability has made Emerson a globally renowned force that drives HVACR technology. Being involved in industry aspects such as system controls, thermostats, valves, sensors, transformers and relays, indoor air quality products, and accessories, the experience and expertise provided by Emerson is second to none. Their products are specifically engineered to be accurate and optimize your systems to result in the most efficient performance possible.