The Brother DCP-L2640DW is a wireless monochrome laser multi-function printer designed for home or small office use. It offers printing, scanning, and copying functions, along with automatic duplex (two-sided) printing. A 50-sheet automatic document feeder (ADF) makes it easier to handle multi-page copy and scan jobs. 

Key specifications
Functions: Print, Scan, and Copy.
Print speed: Up to 36 pages per minute (ppm) for Letter size and 34 ppm for A4.
Print resolution: Up to 1200 x 1200 dpi.
Connectivity: Dual-band Wi-Fi, Ethernet, and USB 2.0. It is compatible with mobile printing apps like Brother Mobile Connect, AirPrint, and Mopria.
Paper capacity: Features a 250-sheet adjustable paper tray and a single-sheet manual feed slot.
Scanning: Can scan in both color and monochrome, with an optical resolution of 1200 x 1200 dpi on the flatbed and up to 600 x 600 dpi via the ADF.
Consumables: Uses TN830 series toner cartridges and a separate DR830 drum unit. 

A4 print speed up to 34 ppm (Black)
WiFi, AirPrint, Mopria, WiFi Direct, LAN, USB 2.0
Auto 2-sided (Duplex) printing, 50 sheets Auto-Document Feeder (ADF), 2-line LCD
Full capacity toner included. Yield up to 1200 pages (black)*
Compatible with Mobile Connect app
3 years carry-in warranty included