The Pro Lite T1531SAW-B5 uses highly accurate Surface Acoustic Wave Touch Technology (SAW) with a pure-glass scratch resistive front, offering superior image clarity & screen durability. The screen can be touched with a soft stylus, finger or gloved hand making it suitable for a number of applications, & the solid but flexible stand ensures resilience in the most demanding environments. Menu buttons are located on the side of the screen which can be locked to prevent tampering, & include a handy function to deactivate the touchscreen for cleaning.