User's Manual
Specification Number Revision Date Page
03089702
1.1 6/13/2017 1 OF 1
Description
TheRFmodulePCBAssemblyisaprintedcircuitboardassemblythatisconfiguredtoconnectdirectlytothe
printedcircuitboardofthehostdevice.TheassemblyisconsistsoftheMicrochipPIC18F26K20microcontroller
thatcontrolstheMicrochipMRF89XAtransceiverandanonboardwireantenna.TheMRF89XAtransceiver
operatesin
the902‐928MHz.TheRFmodulesleepmodeisactive99.7%ofthetimetoconservepower.TheRF
moduleisdesignedtooperatefroma3Vsupplyandincludesapost2.5Vregulator,whichregulatesthepowerto
allonboardcircuitry.TheRFmodulecomplieswiththeU.S(FCC
ID:SAK03089702)andIC(IC:7145A‐03089702)
requirements.
ModelNumber
TheRFmoduleisidentifiableusingtheuniquemodelnumber,03089702.
MechanicalDimensions
TheRFmodules’mechanicaldimensionsaredepictedinfigure1throughfigure4below.Alldimensionsareinmillimeters.
ElectricalConnections
Theelectricalconnectionsforthe4‐pinconnectoraredepictedinfigure6.Seebelowforthefunctionofeachpin.
Figure5
Figure6
ConnectionPinsDescription
Pin1:Communicationdata
Pin2:Communicationclock
Pin3:Inputpowerreturn
Pin4:Positiveinputpower
InstallationInstructions
1. Alignthe4‐pinconnector,J1,withthefemalereceptaclesonthehostdeviceandsecure.Ensurepins1‐4
connectionsareconnectedtothedesignatedreceptaclepinsonthehostdevicePCBA.
2. MechanicalsupportcanbeachievedbysecuringtheRFPCBAtothehostdeviceusingthemountingholeprovided
onthePCBanda#4screw.Theantennashouldbesecuredtothehostdeviceenclosureformechanicalsupport.
NOTE:THERFMODULEMUSTBEIDENTIFIEDONTHEHOSTDEVICELABEL,i.e.,“CONTAINSFCCID:SAK03089702”OR
“CONTAINSIC:7145A‐03089702”FORTHEU.S.ORTHECANADIANMARKET.
Figure1
Figure2
Figure3
Figure4
MountingHole
TopView Bottom View
S
ideView
,
Antenna
S
ideView
,
J1
MountingHole
Pin
1
Pin 2
Pin 3
Pin
4
J
1