Wacom STU-540

As Wacom’s most advanced and robust premium signature pads, the Wacom STU-540 feature a 5″ high-resolution color screen with hardened cover glass for superb durability.

They also feature a broad range of connectivity options including multiple choices for virtualized desktop environments, as well as sophisticated encryption and user convenience.

As a result, these signature pads have the flexibility to meet the growing demands of any organization implementing handwritten electronic signatures.

  • Low maintenance costs thanks to high durability and the patented cordless, batteryfree digital pen
  • Biometrically accurate signatures using the digital pen with 1024 levels of pressure sensitivity
  • High durability and a natural, paper-like feel enabled by the hardened glass with anti-glare screen treatment
  • Secure transactions enabled by stateof-the-art AES256 / RSA2048 encryption
  • Support for virtualized environments through the Virtual COM Port (VCP) for compatibility with Citrix XenDesktop and XenApp v6.5 and later
  • Customizable key pad and PIN pad enabling input using graphic images or numerals
  • Attractive signature rendering through the use of WILL™ (Wacom Ink Layer Language) technology that renders the best and most authentic-looking representation of handwritten electronic signatures
  • Enhanced signature traceability through a UID (Unique hardware ID) for identifying the exact signature pad unit used for a particular signature and other inputs
  • Straightforward integration of signature pad support into applications through the WILL™ SDK (Software Development Kit) for Signature
  • Ability to display promotional material through an upgraded USB protocol and internal image storage that enables ads to be shown at natural speeds with no delays
General Specifications 
Dimensions (W x H x D)6.4 x 6.2 x 0.4inches / 163 x 157 x 10 mm
Weight (including stand)0.6 lbs / 275 g
Main body colorBlack
Power supplyUSB bus powered
Power consumption2.5 W maximum
Communication interfaceUSB/VCP/RS-232
LCD Display 
Display TypeTFT
Cover plate surfaceAG etched glass
Native resolution800 x 480 pixels
Pad and Pen 
Reading Technology Electromagenetic Resonance (EMR)
Active area size 4.3 x 2.6 inches / 108 x 65 mm
Coordinate resolution 2540 lpi / 0.01 mm/pt (non-interpolated)
Coordinate accuracy ±0.02 inches / ±0.5 mm (center)
Report rate 200 points per second (non-interpolated)
Pressure levels1024 (non-interpolated)
Encryption AES256 / RSA2048
Pen storage Pen compartment
Connectivity security USB cable locking system
Data security Real time image capture without data storage.
 Internal memory for images only.
Security lock slot Yes, Kensington
Signature softwareCompatible with Windows signature / eSign software and Wacom´s sign pro PDF and sign pro PDF Plug-in for Adobe Acrobat.
Package contentSignature pad, cordless and battery-free pen, USB cable (9.84 ft / 3 m), quick start guide, pen tether (nylon fiber, 19.7 inch / 50 cm)