Brother DS-940DW Portable Wireless A4 Sheetfeed Color Duplex Document Scanner

Engineered to be truly flexible, the DS-920DW gives greater flexibility for businesses with up-to-date, mobile scanning needs. Featuring a built-in li-on battery and intuitive LCD panel, you can wirelessly send 2-sided (duplex) documents direct to mobile devices anywhere, anytime.
    Lightweight, compact portable document scanner
    Up to 15ppm scan speed with double-sided (duplex) scanning
    Built-in battery
    Achieve optimum performance with TWAIN, WIA, ICA, SANE drivers
    Wi-Fi network and USB connectivity
    Easily scan A4 documents, receipts and ID cards

Specifications
Document Size - Single Paper - Width   50.8 mm to 215.9 mm
Document Size - Single Paper - Length  86.4 mm to 1,828 mm
Colour / Black   Yes / Yes
Duplex Scan    Yes
Color Depth - Input    48-bit colour processing
Color Depth - Output   24-bit colour processing
Resolution - Optical   Max. 600 dpi × 600 dpi
Resolution - Interpolated   Max. 1,200 dpi × 1,200 dpi
Grayscale   256 levels
Product Dimensions (Width x Depth x Height)   319 mm x 63.1 mm x 45.4 mm
General
Memory Capacity   512 MB
Weight   0.7 kg
Operation
Power Source   Lithium battery
USB bus-power
Power Consumption - Scanning
USB3.0 mode 3.6W
Wi-Fi mode 4.4W
Power Consumption - Ready
2.2W @Wi-Fi mode
1.5W @PC mode
Power Consumption - Power Off   0.11W
Compliance
TWAIN Compliant - Windows®
Windows® 7 SP1 / Windows® 8.1 / Windows® 10/ Windows Server® 2012 / Windows Server® 2012 R2 / Windows Server® 2016 / Windows Server®2019
TWAIN Compliant - Mac OS
macOS v10.12.x/10.13.x/10.14.x
Interface
USB   Micro USB3.0
Wireless LAN   IEEE802.11 b/g/n
Network
Wireless Network Security   WEP 64/128 bit, WPA-PSK (TKIP/AES), WPA2-PSK (AES)