ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR DELL 1815dn, Laser, Mono printing, 600 x 600 DPI, Mono copying, A4, Black DELL 1815dn. Print technology: Laser, Printing: Mono printing, Maximum resolution: 600 x 600 DPI. Copying: Mono copying. Scanning: Color scanning, Optical scanning resolution: 600 x 1200 DPI. Faxing: Mono faxing. Maximum ISO A-series paper size: A4. Product color: Black