Structure:
(1)  Braille embossed overlay


Specification of Membrane Switch:

Environmental	Operating Temperature	-40°C to +80°C (-40°to 176°F)
	Storage Temperature	-40°C to +85°C (-40°to 185°F)
	Humidity	40°C, 90% to 95% for 240 hours
	Vibration	20G's max.
Mechanical	Actuation Force	Non-tactile 60g to 300g (2oz to 10oz)
		Tactile 150g to 400g (6oz to 14oz)
	Switch Stroke	Non-tactile 0.1 to 0.5mm
	Life Expectancy	Tactile 0.6 to 1.5mm
		Non-tactile >5 million actuations
		Tactile >1 million actuations
Electrical	Operating Voltage	35 volts maximum
	Operating Current	10 micro amps to 100 milliamps, resistive
	Operating Power	1 watt maximum
	Circuit Resistance>	10 ohms to 500 ohms, dependent on size and layout
	Insulation Resistance	100M ohms at 100V DC
	Dielectric Withstand	>250 VRMs (50-60Hz 1 minute)
	Contact Bounce/td>	≤ 5 milliseconds