Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Standard Keypads
Keyboards and Keypads
SPECIFICATIONS
Rating
Rating at 5 Vdc:100milliamps
Contact Resistance: 25milliohmsorlesson
anewswitch
Voltage Breakdown:250Vacbetweenmutually
insulatedparts
Insulation Resistance:1,000megaohms
minimum
Life Expectancy:1,000,000operations
Contact Bounce: 10 milliseconds or less for
thelifeoftheswitch
Operating Temperature:-40°Cto80°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-inlegendsare
availableinwhitebuttonwithblack
legendandwhitelegendwithred,
greenorblackbuttons.Othercolor
combinationsarepossible.
Printed Legends (2 Styles)
Virtuallyanythingwhichcanbephotographed
canbeprinted.Sturdyepoxyinkprintingbonds
tothesurfaceofthebutton.Standardprinting
forthegrayunlightedbuttonsiswhite;standard
printingforthetranslucentwhitebuttonsofthe
lightablemodulesisblack.
Top Surface Printing: Legendisapplieddirectly
to top of button. Available on all standard,
unlightedmodules.
Sub Surface Printing: Providesmaximumwear
for printed surfaces. Available for lighted and
unlightedgraymodules.Printedinternalbutton
capisprotectedbyaclearoutercap.
4GH088
.083"
1GH125
.138"
3GH187
.207"
2GH250
.276" ABC
ABCD
ABCDE
ABCDEFGH 5Char.
2Lines
4Char.
1Line
2Char.
1Line
2Char.
1Line
OPER
TAB
INDEX
ON
8Char.
3Lines
4Char.
2Lines
3Char.
1Line
2Char.
1Line
4Char.
2Lines
3Char.
1Line
2Char.
1Line
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:Limitationsforlegendsdifferwithsurfacetobeprintedandactualcharacters.Ifyourapplicationexceedstheapproximations
inthechart,contactGrayhillformoreinformation.
*Fortopandsub-surfaceprintedmodules.
STANDARD LEGENDS
Telephone Keyset
Two6-buttonmodulesformthekeyset.White
telephone legend is
molded into a gray
button. SPST, 2PST,
3PST, and 4PST
c ir cu itr y a vail abl e
from distributors, see
ordering information;
orderspecialcircuitry
fromGrayhill.
Non-Legend, Lighted Modules
Standard lightable module configurations
withoutcapslotforinsertablelegend.
Insertable Legend Styles
Prototypescanlookprofessionalwithinsertable
legendmodules.Justslipimprintedlegendinsert
throughtheslotoftheclearbuttoncap.
Legend Sheet
Available for each module style. Each sheet
containscommonlyusedsymbols,terms,alpha
characters,and0-19inNewsGothicCondensed
typeonpolyesterlm,readytobecutandinserted.
Deadfrontlegendsareinvisibleuntillit.
White on Clear:Forunlightedgraymodules Part No. 82AC2017-1
Black on Clear:Forlightedgraymodules Part No. 82AC2050-1
Translucent White on Black:Forblackmodules Part No. 82AC2060
Deadfront on Black:Forblackmodules
Spring Contact:Copperalloy,goldplateover
nickelplate
Housing:ABSplastic(gray)
Base:PPSplastic(black)
Return Spring:Tinnedmusicwire
Other Parts:(ByModuleandLegendStyle):For
unlighted module with molded legends or top
surfaceprintedlegends.InternalButtonisacetal
andtheButtonisABSplastic(gray).
Forunlighted module with sub-surface printed
legends or insertable legends, Internal Button
isacetal;InternalCapisABSplastic(gray);and
ClearCapispolycarbonateplastic.Forlightable
modules,theInternalButtonandtheClearCap
are polycarbonate. The Internal Cap for gray
modules is acrylic; for the black modules, the
InternalCapwithwindowispolycarbonate.
For special lightable modules for higher
temperatures,internalbuttoncapispolycarbonate
andhousingispolyester.
Operating Features
Action:Momentary,wipingcontact
Button Travel:0.130"(3,30mm)totaltravel
Overtravel:0.080"nominal
Operating Force:8±3ounces(dependson
numberofpoles.)
Soldering Instructions
Series 82 Keyboard Modules have been
successfully tested for heat resistance to
solderingupto260°C(500°F)foramaximum
of5seconds.Carefuluxcleaningisrequired
sincetheswitchisnotsealed.Forapplicationsin
excessoftheselimitsorthatrequirevaporspray
orimmersioncleaning,contactGrayhill.
Printed Type styles
Thetypestylechartbelowillustratestypestyle
andapproximatesizesandlimitsforbuttoncap
legends;othersizesarealsoavailable.Limitations
forlegendsdifferwithtypesizeandcharacter.
Legendsforlightablemodulesarefurtherlimited
bythesizeoftheinternalbuttonandlightedarea.
Grayhill'slibraryincludesmanypopularlegends.
ContactGrayhillforcompleteinformation.
Special Colors
Besides the standard
grayandblackhousings,
you may order white,
beige or brown. Button
colors may also be
specially ordered. For
more information, see
nextpage.