Keyboards and Keypads
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Modular Keyboards
SERIES 82
Lightable
FEATURES
11/16" Between Button
Centers
Long, Stroke, Wiping Contact
Lightable Modules
Choice of 5 Circuitries with
Unlighted Modules
User Legendable
LIGHTABLE MODULES
Light Source and Lamp Mounting
Each lightable button fits over a T-1 size LED
or incandescent lamp mounted to PC board
(see Figure 2-2a). The height of the lamp
should not exceed .250" (6,35 mm) from the
surface of the board. (Note: Grayhill does not
manufacture or sell LED's or incandescent
lamps).
For easy light replacement, mount the lamp or
LED through the back or solder side of the
board (see Figure 2). This method of mounting
allows you to replace light source without
removing the keyboard module. The other
method of light mounting (Figure 2a) requires
MOUNTING
Build a custom keyboard with identical button
distances no matter how you stack them.
Designed to plug into any printed circuit board
from 1/16" to 1/8" thick, modules stack in any
configuration, maintaining 11/16" button centers.
For Lightable Modules which will be continuously
lit, mixing vertically mounted modules with
Figure 1 Panel Mount Cutout Diagram
Lightable Modules Unlighted Modules
horizontally mounted modules is not
recommended; the orientation of the rectangular,
lighted area will differ. See drawings.
See Figure 1 Panel Cutout diagram for 6 button
module mounting dimensions. Refer to drawings
for other module dimensions.
desoldering the keyboard module then
desoldering the lamp when it's necessary to
replace the light source.
The chart below lists ratings for a size T-1
incandescent lamp. To extend the life of the
lamp, use an alternating current and reduced
voltage. The chart also lists maximum
temperatures the module can withstand. For
higher temperatures, Grayhill offers modules
made of special plastics, polyester switch
housing and polycarbonate internal button. All
measurements were determined under
laboratory conditions. (Mounted model
continuously lit in temperature controlled oven
with continuously circulating air for 24 hours.)
Maximum Max, Temp.
Intensity and Service Allowable for Modules
Lamp Mean Spherical Life Current Ambient With Special
Number* Candle Power Volts in Hours Per Lamp Temperature Plastics
715 Bright .15 MSCP 5 V 40,000 115 mA 130°F 200°F
680 Moderate .03 MSCP 5 V 100,000 60 mA 150°F 220°F
*Lamps not available from Grayhill.
Incandescent Lamp–Size T-1
Figure 2a
Mounted from
component side
Figure 2
Easy replacement
mounting
.250
(6,35)
MAX.
.170 (4,32)
.531
(13,49)
SQ.
.687 (17,45) .687 (17,45)
.343
(8,71)
.687
(17,45)
C
L
C
L
Keypads
40
Keyboards and Keypads
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Modular Keyboards
DIMENSIONS In inches (and millimeters)
Unlighted Lightable
Unlighted (only)
Unlighted Lightable
Unlighted Lightable
.683 + .005 – .010
(17,35 + 0,13 – 0,25)
.683 + .005
– .010
(17,35 + 0,13
– 0,25)
.500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.408 ± .005
(10,36 ± 0,13)
SQ. TYP.
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
.168 ± .010
(4,27 ± 0,25)
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
.168 ± .010
(4,27 ± 0,25)
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
.687 ± .005
(17,45 ± 0,13)
.683 + .005
– .010
(17,35 + 0,13
– 0,25)
.500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.408 ± .005
(10,36 ± 0,13)
SQ. TYP.
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
.168 ± .010
(4,27 ± 0,25)
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
1.370 + .005 – .010
(34,80 + 0,13 – 0,25)
2.057 + .005 – .010
(52,25 + 0,13 – 0,25)
.683 + .005
– .010
(17,35 + 0,13
– 0,25)
.500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.408 ± .005
(10,36 ± 0,13)
SQ. TYP.
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
.168 ± .010
(4,27 ± 0,25)
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
.750 ± .025
(19,05 ± 0,64)
.450 ± .010
(11,43 ± 0,25)
.168 ± .010
(4,27 ± 0,25)
.125 ± .005
(3,18 ± 0,13)
.030 ± .002
(0,76 ± 0,05)
DIA. TYP.
.687 ± .005
(17,45 ± 0,13)
2.057 + .015 – .010
(52,25 + 0,13 – 0,25)
.687
.005
(17,35
0,13) .500 + .010 – .005
(12,7 + 0,25 – 0,13)
SQ. TYP.
.408 .005
(10,36 0,13)
SQ. TYP.
.750 .025
(19,05 0,64)
.450 .010
(11,43 0,25)
.168 .010
(4,27 0,25)
.125 .005
(3,18 0,13)
.030 .002
(0,76 0,05)
DIA. TYP.
.750 .025
(19,05 0,64)
.450 .010
(11,43 0,25)
.168 .010
(4,27 0,25)
.125 .005
(3,18 0,13)
.030 .002
(0,76 0,05)
DIA. TYP.
.687 .005
(17,45 0,13)
1.370
+ .015
– .010
(34,80
+ 0,38
0,25)
CIRCUIT BOARD STANDOFF
.062 + .010 – .005 (1,57 + 0,25 – 0,13) DIA.
x .032 .005 (0,81 0,13) HIGH
Keypads
41
Keyboards and Keypads
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Modular Keyboards
TERMINAL ARRANGEMENTS
For continuously lit keyboards, mixing horizontally and vertically mounted
modules is not recommended. See lamp mounting on page D-33.
Unlighted Lightable Unlighted Lightable
Button Rear Views and Button Rear Views and
Identification Pin Locations Identification Pin Locations
Vertical Mount Horizontal Mount
Unlighted (only)
Unlighted (only)
Unlighted Lightable Lightable
Unlighted
Lightable Lightable
Unlighted Unlighted
A
1
4
2
3
.
.
.
.
.
.
.
.
1
4
.
.
.
.
.
.
.
.
A
1
4
2
3
.
.
.
.
.
.
.
.
1
4
.
.
.
.
.
.
.
.
A
B
A1
A4
A2
A3
.
.
.
.
.
.
.
.
B1
B4
B2
B3
.
.
.
.
.
.
.
.
AB
A1
A4
A2
A3
.
.
.
.
.
.
.
.
B1
B4
B2
B3
.
.
.
.
.
.
.
.
A
B
C
A1
A4
A2
A3
.
.
.
.
.
.
.
.
B1
B4
B2
B3
.
.
.
.
.
.
.
.
C1
C4
C2
C3
.
.
.
.
.
.
.
.
A1
A4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
ABC
A1
A4
A2
A3
.
.
.
.
.
.
.
.
B1
B4
B2
B3
.
.
.
.
.
.
.
.
C1
C4
C2
C3
.
.
.
.
.
.
.
.
A1
A4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
D
E
F
A
B
C
A1
A4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
D1
D4
.
.
.
.
.
.
.
.
E1
E4
.
.
.
.
.
.
.
.
F1
F4
.
.
.
.
.
.
.
.
A1
A4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
D1
D4
.
.
.
.
.
.
.
.
E1
E4
.
.
.
.
.
.
.
.
F1
F4
.
.
.
.
.
.
.
.
DEF
ABC
A1
A4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
D1
D4
.
.
.
.
.
.
.
.
E1
E4
.
.
.
.
.
.
.
.
F1
F4
.
.
.
.
.
.
.
.
A1
A4
.
.
.
.
.
.
.
.
B1
B4
.
.
.
.
.
.
.
.
C1
C4
.
.
.
.
.
.
.
.
D1
D4
.
.
.
.
.
.
.
.
E1
E4
.
.
.
.
.
.
.
.
F1
F4
.
.
.
.
.
.
.
.
.687
(17,45)
.687
(17,45)
.090 (2,29)
TYP.
.687
(17,45)
.488
(12,40)
.094 (2,39)
.185 ± .010
(4,70 ± 0,25)
.045 (1,14)
TYP. 8 PLS.
.162 + .002 – .004
(4,11 + 0,05 – 0,10)
DIA. HOLE TO
ACCOMMODATE
LIGHT SOURCE
CIRCUIT BOARD STANDOFFS
.066 ± .006 (1,68 ± 0,15) DIA. X
.032 ± .005 (0,81 ± 0,13) HIGH
Letters shown in front views are for identification only; product is
marked on back as shown. Pin locations correspond to circuit diagrams.
Keypads
42
Keyboards and Keypads
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Modular Keyboards
ORIENTATION OF MODULES
A module, depending on circuitry, may not be
symmetrical. Rotating it 180° will result in a
different pin location. Please note the button
PRINTED CIRCUIT BOARD LAYOUT
This layout provides the horizontal printed circuit board layout as viewed from the top side of the
PC board. Turning end to end will result in a different pin location. However, the dimensional
relationship will remain the same.
Lightable Modules–per drawing below.
This drawing indicates the layout to be used for a 6 button module with light sources mounted two
ways: the lamps for the upper 3 buttons are mounted from the top or component side of the board,
and the lamps for the lower 3 buttons are mounted by the easy replacement method. (See also Light
Source and Lamp Mounting.) Light sources, when mounted from the top side of the board, must
be mounted before the keyboard modules; when mounted, lamp should extend no more than .250"
(6,35 mm) above the board.
Unlighted Module Lightable Module
C
L
C
L
C
L
.
488 ± .003
(12,40 ± 0,08)
TYP.
.687 ± .003
(17,45 ± 0,08)
.687 ± .003
(17,45 ± 0,08)
HOLE TO
ACCOMMODATE
.032 (0,81) DIA.
PIN
.045 ± .002
(1,14 ± 0,05)
TYP.
(8 PLACES)
.687 ± .003
(17,45 ± 0,08)
.244 (6,20) TYP.
.090
(2,29)
TYP.
.500 ± .003
(12,7 ± 0,76)
.094
± .010
(2,39
± 0,25)
identification, the pin location for the desired
circuitry, and the direction of mounting. It is
important to use this information when designing
a printed circuit board layout and when
communicating with Grayhill. See Ordering
Information–Special Keyboard Modules on the
next page.
C
L
C
L C
L C
L
.687 ± .003
(17,45 ± 0,08)
.687 ± .003
(17,45 ± 0,08)
.270 ± .003
(6,86 ± 0,08)
.112
± .003
(28,45
± 0,08)
TYP.
HOLE TO
ACCOMMODATE
.032 (0,81) DIA.
PIN
.170 (4,32)
RECOMMENDED
DIA. HOLE
ACCOMMODATES
LAMP IN EASY
REPLACEMENT
MOUNTING
DIMENSIONS ARE DEPENDENT ON
LAMP SOURCE. APPROXIMATELY
.020 (0,51) AND .100 (2,54) APART
FOR A T-1 LAMP OR LED
CIRCUIT DIAGRAMS
The bottom view of the line drawings shows
number (A1, A2, etc.) next to the pin locations
of each switch section. These pin numbers are
directly related to the circuit diagrams. For
example, if the switch under Button A of a
standard module were SPST, the pins would
be located at the "#2" Position. If the module
were a lightable one with SPST circuitry, the
pins would be located at the "#1" Position. If
other locations are desired, specify them.
The coded circuits shown are suggested
possibilities and each button may carry a
different circuit. Location of active pins on
each button may be varied to conform with
layout of the printed circuit board. Up to a 7-bit
code is possible under each button.
Combinations of simple circuitries are also
possible as shown in the sample diagrams.
Standard Modules Lightable Modules
Coded Circuitry–To 7 Bits/Button
Other Possible Circuit Configurations
22
3
2
3
21
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
111
4
1
4
C C C C C C
C C C C
SPST 2PST 3PST 4PST SPST 2PST
Note: Coded switches are constructed so that common (C) is made after all other contacts.
Keypads
43
Keyboards and Keypads
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Modular Keyboards
SPECIFICATIONS
Rating
Rating at 5 Vdc: 100 milliamps
Contact Resistance: 25 milliohms or less on a
new switch
Voltage Breakdown: 250 Vac between mutually
insulated parts
Insulation Resistance: 1,000 megaohms
minimum
Life Expectancy: 1,000,000 operations
Contact Bounce: 10 milliseconds or less for
the life of the switch
Operating Temperature: -40°C to 80°C
Materials and Finishes
Pin Contact: Brass, gold plate over nickel plate
SPECIAL LEGENDS
Molded-In Legends
For Unlighted Modules
In addition to standard white
legend on gray button, long-
wearing, molded-in legends are
available in white button with black
legend and white legend with red,
green or black buttons. Other
color combinations are possible.
Printed Legends (2 Styles)
Virtually anything which can be photographed
can be printed. Sturdy epoxy ink printing bonds
to the surface of the button. Standard printing
for the gray unlighted buttons is white; standard
printing for the translucent white buttons of the
lightable modules is black.
Top Surface Printing: Legend is applied directly
to top of button. Available on all standard,
unlighted modules.
Sub Surface Printing: Provides maximum wear
for printed surfaces. Available for lighted and
unlighted gray modules. Printed internal button
cap is protected by a clear outer cap.
4GH088
.083"
1GH125
.138"
3GH187
.207"
2GH250
.276" ABC
ABCD
ABCDE
ABCDEFGH 5 Char.
2 Lines
4 Char.
1 Line
2 Char.
1 Line
2 Char.
1 Line
OPER
TAB
INDEX
ON
8 Char.
3 Lines
4 Char.
2 Lines
3 Char.
1 Line
2 Char.
1 Line
4 Char.
2 Lines
3 Char.
1 Line
2 Char.
1 Line
N/A N/A
OFF
1515
RESEARCH
SYSTEMS
12345678
CODE
SEND
STOP
1234
OFF
ON
Type No. Sample Style Sub Surface Top Surface Lightable Module
and Typical and Typical Character and Character and Character and
Height Sizes Line Limitations Line Limitations Line Limitations*
Note: Limitations for legends differ with surface to be printed and actual characters. If your application exceeds the approximations
in the chart, contact Grayhill for more information.
* For top and sub-surface printed modules.
STANDARD LEGENDS
Telephone Keyset
Two 6-button modules
form the keyset. White
telephone legend is
molded into a gray
button. SPST, 2PST,
3PST, and 4PST
circuitry available
from distributors, see
ordering information;
order special circuitry
from Grayhill.
Non-Legend, Lighted Modules
Standard lightable module configurations
without cap slot for insertable legend.
Insertable Legend Styles
Prototypes can look professional with insertable
legend modules. Just slip imprinted legend insert
through the slot of the clear button cap.
Legend Sheet
Available for each module style. Each sheet
contains commonly used symbols, terms, alpha
characters, and 0-19 in News Gothic Condensed
type on polyester film, ready to be cut and
inserted. Deadfront legends are invisible until lit.
White on Clear: For unlighted gray modules Part No. 82AC2017-1
Black on Clear: For lighted gray modules Part No. 82AC2050-1
Translucent White on Black: For black modules Part No. 82AC2060
Deadfront on Black: For black modules
Spring Contact: Copper alloy, gold plate over
nickel plate
Housing: ABS plastic (gray)
Base: PPS plastic (black)
Return Spring: Tinned music wire
Other Parts: (By Module and Legend Style): For
unlighted module with molded legends or top
surface printed legends. Internal Button is acetal
and the Button is ABS plastic (gray).
For unlighted module with sub-surface printed
legends or insertable legends, Internal Button is
acetal; Internal Cap is ABS plastic (gray); and
Clear Cap is polycarbonate plastic. For lightable
modules, the Internal Button and the Clear Cap
are polycarbonate. The Internal Cap for gray
modules is acrylic; for the black modules, the
Internal Cap with window is polycarbonate.
For special lightable modules for higher
temperatures, internal button cap is
polycarbonate and housing is polyester.
Operating Features
Action: Momentary, wiping contact
Button Travel: 0.130" (3,30 mm) total travel
Overtravel: 0.080" nominal
Operating Force: 8 ± 3 ounces (depends on
number of poles.)
Soldering Instructions
Series 82 Keyboard Modules have been
successfully tested for heat resistance to
soldering up to 260°C (500°F) for a maximum of
5 seconds. Careful flux cleaning is required
since the switch is not sealed. For applications
in excess of these limits or that require vapor
spray or immersion cleaning, contact Grayhill.
Printed Type styles
The type style chart below illustrates type style
and approximate sizes and limits for button cap
legends; other sizes are also available. Limitations
for legends differ with type size and character.
Legends for lightable modules are further limited
by the size of the internal button and lighted area.
Grayhill's library includes many popular legends.
Contact Grayhill for complete information.
Special Colors
Besides the standard
gray and black housings,
you may order white,
beige or brown. Button
colors may also be
specially ordered. For
more information, see
next page.
Keypads
44
Keyboards and Keypads
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Modular Keyboards
ORDERING INFORMATION: STANDARD MODULES
Type of Module Description Part No.
6 Buttons, SPST 82-601-85
6 Buttons, 2PST 82-601-86
6 Buttons, 3PST 82-601-87
6 Buttons, 4PST 82-601-88
6 Buttons, SPST 82-601-89
6 Buttons, 2PST 82-601-90
6 Buttons, 3PST 82-601-91
6 Buttons, 4PST 82-601-92
1 Button, SPST 82-101-71
1 Button, 4PST 82-101-74
2 Buttons, SPST 82-201-41
2 Buttons, 4PST 82-201-44
3 Buttons, SPST 82-301-61
3 Buttons, 4PST 82-301-64
6 Buttons, SPST 82-601-81
6 Buttons, 4PST 82-601-84
1 Button, SPST 82-150-17
1 Button, 2PST 82-150-15
3 Buttons, SPST 82-350-10
3 Buttons, 2PST 82-350-8
6 Buttons, SPST 82-650-10
6 Buttons, 2PST 82-650-8
1 Button, SPST 82-150-38
1 Button, 2PST 82-150-16
3 Buttons, SPST 82-350-12
3 Buttons, 2PST 82-350-9
6 Buttons, SPST 82-650-19
6 Buttons, 2PST 82-650-9
1 Button, SPST 82-150-211
1 Button, 2PST 82-150-213
3 Buttons, SPST 82-350-41
3 Buttons, 2PST 82-350-43
6 Buttons, SPST 82-650-71
6 Buttons, 2PST 82-650-73
White: For Unlighted Gray 82AC2017-1
Black: For Lightable Gray 82AC2050-1
Deadfront: For Lightable Black 82AC2060
Top Half of Telephone
Legend (Molded-in)
Bottom of Telephone
Legend (Molded-in)
Unlighted Gray Modules
For Legend Inserts
Lightable Gray Modules
Non-Legend
Lightable Gray Modules
For Legend Inserts
Lightable Black Modules
For Legend Inserts
Legend Sheets
Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales
Office, an authorized local Distributor or Grayhill.
ORDERING INFORMATION:
Special Legends
To order non-standard modules, information is
required for the areas listed below.
Your special order will be assigned a part number
for future identification. This number is
sequentially assigned and is non-descriptive.
1. Type of Module. Unlighted: 1-, 2-, 3-, or 6-
button. Lightable: 1-, 3-, or 6-button.
2. Mounting Orientation. Horizontal or
vertical.
3. Circuitry. Requirements for each button must
be listed by its reference letter designation.
For example: Button A = SPST, Button B =
4PST, Button C = 3PST, etc. For coded or
other available circuitry patterns a descriptive
diagram is required for each button.
4. Button Type (Legend). Grayhill offers four
legend types: molded-in; top surface printed;
sub-surface printed; and insertable. Unlighted
modules are available in all types. Lightable
modules are available in all types but molded-
in legends.
5. Button Color. Standard color for molded-in
legend modules is gray button with white
legend. Special button colors available are
white with black legends, red, green or black
buttons with white legends. Additional custom
colors are available by special order.
Lightable gray modules have a standard
translucent white button with black legend.
Special button color includes translucent red,
amber, yellow, blue and green. Lightable
black modules have a special opaque black
button; discuss special colors with Grayhill.
Colors can be intermixed, ie. buttons A-E
gray; and F, white.
6. Housing Color. Base in black. Upper
housing is black for lightable legends and
gray for all other module styles. Other stock
colors available include white, beige and
brown.
7. Legends. List legend requirement for each
button (Button A legend, "10", is type style
4GH088. Button B, "ON", is type style
1GH125, etc.). For legend information, see
page D-37.
Price: Contact Grayhill
Keypads
45