Elo TouchSystems 1729L manual Acoustic Pulse Recognition Specification, Electrical

	Acoustic Pulse Recognition Specification
MECHANICAL
Input method	Finger, finger nail, gloved hand, or stylus activation
ELECTRICAL
Position accuracy	1% max. error
Resolution accuracy	Touchpoint density is based on controller resolution of 4096 x 4096
Touch activation force	Typically 2 to 3 ounces (55 to 85 grams)
Controller	Board: USB 1.1
OPTICAL
Light transmission	90%+/-5%
ENVIRONMENTAL
Chemical resistance	The touch activation area of the touchscreen is resistant to chemicals
	that do not affect glass such as: acetone, toluene, methyl ethyl ketone,
	isopropyl alcohol, methyl alcohol, ethyl acetate, ammonia-based glass
	cleaners, gasoline, kerosene, vinegar
DURABILITY
Surface durability	Surface durability is that of glass, Mohs’ hardness rating of 7
Expected life	No known wear-out mechanism, as there are no layers, coatings, or moving
	parts. APR technology has been operationally tested to more than 50
	million touches in one location without failure, using a stylus similar
	finger.

C-44 Elo Touchmonitor User Guide