EUS-704.02-1070 EAO, EUS-704.02-1070 Datasheet - Page 97

• Manufacturer Part Number: EUS-704.02-1070
• Description: Switch Actuator
• Manufacturer: EAO
• Series: 04r

Specifications of EUS-704.02-1070

• Mounting Hole Dia: 22.5mm
• Contact Voltage Ac Max: 600V
• Actuator Diameter: 30mm
• Switch Operation: (ON)
• Contact Current Ac Max: 10A
• For Use With: 04 Series Non-Illuminated Pushbutton Switches
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Alphanumeric keyboards, integrated touchpad, OEM
version, 105 keys on PCB with overlay, cable output,
layouts in English, German, French and US English
IP65
Touch-Sensitive Keyboards Overview
The Technology
Touch-sensitive technology involves the use of high-frequency
signals whose amplitude is modified when a key is activated,
i.e. when it is touched or skimmed by the user’s finger.
A touch-sensitive keyboard consists of three elements:
• a set of keys, on a printed circuit board;
• an interface card;
• a non-conductive front panel (glass, polycarbonate, etc).
Each key circuit features a detector circuit or cell.
The detector circuit is protected by an EAO patent.
An HF generator sends the HF signal to the keys.
An interface card based around a micro-controller controls
all the keys. The keyboard’s output signal is transmitted to
the PC via a standard PS2 or USB port.
Principle
Each key on the keyboard consists of a copper area linked
to a HF-emitting detector cell. This copper area may be
Rugged touch sensitive keyboard with touchpad
75.105K2.S01
75.105D2.S01
75.105F2.S01
75.105U2.S01
75.105K2.U01
75.105D2.U01
75.105F2.U01
75.105U2.U01
Part No.
US English
US English
German
German
English
English
French
French
Layout
For other options, keypads, keyboards or custom configurations please contact EAO Switch directly.
Output type
PS2
PS2
PS2
PS2
USB
USB
USB
USB
Alphanumeric keyboard with integrated touchpad,
desktop housing version, 105 keys, cable output,
layouts in English, German, French and US English
EAO Switch Condensed Catalog 100
75.105K2.S06
75.105D2.S06
75.105F2.S06
75.105U2.S06
75.105K2.U06
75.105D2.U06
75.105F2.U06
75.105U2.U06
Part No.
US English
US English
German
German
English
English
French
French
Layout
considered as the armature of a capacitor, with the front
panel of the keyboard acting as the dielectric (the non-
conductive isolating material).
When a human finger touches the contact area, it acts as
the second armature of the capacitor, grounded through
the user’s body. The body‘s electrical properties then
act as a serial RLC (Resistor–Self–Capacitor) network,
diverting part of the HF voltage generated on the key.
This drop in voltage constitutes a change in the
output state and is detected as such by
the micro-controller.
Output type
USB
USB
PS2
PS2
PS2
PS2
USB
USB
TSK.series
97
KEYBOARDS