Leetac Electronics Technology LEETACEZ250 FM Audio Transmitter User Manual E Z250 IM R08

Zhongshan Leetac Electronics Co., Ltd. FM Audio Transmitter E Z250 IM R08

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1. Manual E-Z250
2. Manual ITGSH-300

Manual E-Z250



InstructionManual



Model:E‐Z250

Wireless Hi-Frequency Headphones 



2

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Precautions



CAUTION



RISKOFELECTRICSHOCK

DONOTOPEN

Thissymbolisintendedto

alertusertothepresenceof

non‐insulated“dangerous

voltage”withinthe

product’senclosurethat

maybeofsufficient

magnitudetoconstituterisk

ofelectricshocktopersons.

RISKSOFELECTRICSHOCK

DONOTOPENTHECOVER

(ORBACK).NOUSER

SERVICEABLEPARTSINSIDE.

REFERSERVICINGTO

QUALIFIEDSERVICE

PERSONNEL.

Thissymbolisintendedto

alertusertothepresenceof

importantoperatingand

maintenance(servicing)

instructionsintheliterature

accompanyingthe

appliance.

Danger:Thisisnotatoy.Keeptheunit&accessoriesoutofreachfromchildrenorpets.

Therewillbeariskofswallow.

Warning:Toreducetheriskoffireorelectricshock,donotexposethisappliancetorainor

moisture.

Caution:Keeptheunitawayfromanyinterferenceappliance,suchasmetalsandmagnet.

Locations:Toreducetheriskofelectricshock,fireorinjury:

1.Donotusetheunitinplacesthatareextremelyhot,cold,dustyorhumid.

2.Donotplacetheunitunderthedirectsunlightnornearanyheatsourcessuchasopen

flamesourcesandunitsthatproduceheat.

3.Donotplaceanyobjectsthatarefilledwithliquids,suchasvases,ontheunit.

4.Keeptheunitawayfromplaceswheretheunitmaybeexposedtodrippingor

splashing.

5.Placetheunitonaflatandstableplace.

ImportantSafetyInstructions

1. Readthroughthemanualbeforeoperating.

2. Heedtheinstructions.

3. Followallinstructionsinthemanual.

4. Keepthemanualforfuturereference.

5. Donotblockanyventilationopenings.Donotimpedetheventilationopeningswith

newspapers,table‐cloths,curtainsorthelike.Leaveatleast5cmaroundtheunitfor

sufficientventilations.



3



6. Installtheunitinaccordancewiththemanufacturer’sinstructions.

7. Cleanthecabinetwithasoftclothslightlymoistenedwithamilddetergentsolution.Do

notusestrongsolventswhichmaycauseunpredictabledamagetotheunit.

8. Beforeusingtheproductwiththeapprovedpoweradapterprovided,ensurethe

electricpowersupplyiscompatiblewiththevoltageratingoftheprovidedpower

adapter.

9. UseONLYtheprovidedpoweradaptor.Neveruseotherpoweradaptorsevenifthey

havethesamespecificationsorrating.

10. Protectthepowercordfrombeingwalkedonorpinched,particularlyatplugs,

conveniencereceptaclesandthepointerswheretheyexistfromtheunit.

11. Theelectricplugisusedasthedisconnectdevice.Thedisconnectdeviceshallremain

readilyoperable.

12. Removethepoweradaptorfromtheelectricoutletiftheproductisnotinuseforalong

time.

13. Ifitislightening,unplugthepoweradaptertopreventtheunitfromunnecessary

damages.

14. Nevertrytodisassemblebatteries.Itwillbefataldangerousifyouheatthebatteriesor

putbatteriesunderthedirectsunlight.

15. Referallservicingtoqualifiedservicepersonnel.Servicingrequiredwhentheunitdoes

notoperatenormallyorhasbeendamagedinanywaysuchasthepoweradaptoris

damaged,liquidsspilledintotheunit,anyhardobjectfallenontheunit,theunithas

beendropped,theunithasbeenexposedtorainormoisture.

16. Themarkinginformationislocatedatthebottomoftheunit.

17. Attentionsshouldbedrawntotheenvironmentalaspectsofbatteriesdisposal.

18. Usetheunitinmoderateclimates.

Warnings:

＊ Listeningtouncomfortablesoundlevelsforprolongedperiodscouldadverselyaffect

yourhearing.

＊ IfusingalineinputordirectpluginMUSTbefullyinsertedintothecorrectsocketand

thevolumeturnedtothelowestlevelbeforeturningtheuniton.Failuretodosocan

resultinhighsoundlevelsandcouldadverselyaffectyourhearing.

＊ PleasemakesurethatthevolumeknobisinthefullyOFFposition.Youwillhearand

feelaclickwhentheknobisintheOFFposition.



4



BatteryWarnings:

*Dangerifbatteryisheatedorexposedtodirectsunlightorhightemperature(over80

centidegrees).

*Donotforcethebatterypackintothechargerorheadphone.Itfitseasilywheninthe

correctorientation.

*Donotshortcircuitthebattery.

*Neverdisassembleorreconstructbattery.

*Donotexposethebatterytowateroranyliquids.

*Disposalofbatteryifitisbroken,leakedordeformed.

*Chargethebatteryasperinstructions.



5

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Locationsandcontrols

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6



Headset

1.Headsetplugs&earbuds

2.Headsetcradles:Thecradlesareadjustableatasettledanglerange.Youcansetthe

headsetplugsatacertainwidthbyadjustingtheangle.Donotforce‐itmaydamage

theheadset.

3.Underchinheadset

4.Channelindicator:Indicatetheoperatingstatusoftheheadset.Fastflashwhenthe

headsetissearchingforanidleFMfrequency;Flashslowlytoindicatethereceiveris

goingtoholdanidleFMfrequency.OncethedesiredFMfrequencyhasbeenfound,

theindicatorwilllightconstantly.

5.Batterypack:Takethebatterypackfromthepackingandinsertitintothebottomside

oftheunderchinheadset.

6.Search:Presstosearchthesignalsentfromthetransmitter.

7.Volumecontrol:Turnthesoundonandoffandadjustthevolumelevel.

8.Balanceknob:Adjustthesoundbalanceofleftandrightchannel.

9.ToneRightknob:Adjustthetoneofrightearphone.

10.ToneLeftknob:Adjustthetoneofleftearphone.

Transmitter

11.Channelindicator:Indicatetheoperatingstatusofthetransmitter.Flashwhenthe

transmitterissearchingforanidleFMfrequency.OncethedesiredFMfrequencyhas

beenfound,theindicatorwilllightconstantly.

12.Charge2indicator(middle):Indicatethebatterypackinsidetheheadset.Light

constantlyduringthechargingprocess;lightoffifthebatterypackisfullychargedorno

batterypackinside.

13.Transmitter

14.Sidebatterychargeslot:Dockandchargetheextrabatterypack.

15.Charge1indicator(side):Indicatethebatterypackatthesideofthetransmitter.Light

constantlyduringthechargingprocess;lightoffifthebatterypackisfullychargedorno

batterypackinside.

16.Headsetdock:Chargethebatterypackinsidetheheadsetduringdocking.

17.Search:PresstosearchanidleFMfrequency.

18.DCINjack:ConnecttheAC/DCadaptortothejack.

19.Audioswitch[MONO/STEREO]:Switchbetweenstereoandmonooperation.

20.AUDIOINsocket:Connectsthe3.5mmaudioinputjackofthetransmittertoyourTVset

byusingthe3.5mmplugcable.

21.AUDIOINsockets[RCA]:ConnectstheRCAaudioinputjackofthetransmittertoyour



7



TVsetbyusingtheRCAto3.5mmplugaudiocablecordsupplied.

Preparations

CAUTION:

Thevalidoperationrangebetweentheheadsetand

transmitteris5minopenarea.



1.Getconnected.ConnectthetransmittertoyourTVsetbytheprovidedaudiocable,

makesurethatthecolorofRCAplugsarematchedthecolorofsocket.

Tips:ItisconvenienttoplacethetransmitternearyourTVset.

2.FullyextendtheDCcord,andkeeptheDCcordlievertically(upordown),astheDC

cordactsasasignaltransmissionantenna.



3.Takethebatterypacksfromthepackingtheninsertoneofthebatterypackintothe

headsetbase,withtheengravedsymbolsidefacingupward.



NOTE:Thebatterypackcarriesalittlepoweranditisadequateforsearchinganidle

FMfrequency.However,itisbettertochargethebatterypackatleast 8hoursbefore

firstuse.(Fordetailedinformationofchargingthebatterypack,pleasereferto

“Chargingthebatterypack”.)



8



4.Docktheheadsettothetransmitterandbatterypackinsidetheheadsetwillbecharged

automaticallyoncethetransmitterispoweredon.

NOTE:TheCharge2indicatesthebatterylevel.TheCharge2indicatorwillgooutif

thebatteryoftheheadsetisfullycharged,otherwiseitlightsupconstantlyand

chargingisinprogress.

5.ConnecttheAC/DCadaptortotheDCINjackatthebackofthetransmitterandtothe

electricoutlet.Thetransmitterispoweredon.

Gettingstarted

1.TurnonyourTVsetandadjusttoacomfortablevolumelevel.NOTE:NevermutetheTV

soundasitcouldcausenosoundontheheadset.

2.Usethevolumecontroltoturntheheadsetonanda“click”willbeheard.Turnthe

volumecontroltosetthevolumeleveltothelowestlevel.

3.Putontheheadsetandadjusttheheadsetcradlestoa

comfortablewidth.

NOTE:Thereare3differentsizesofearbudsprovided

(oneisequippedwiththeheadset,theothersareinthe

packing),tofitfordifferentuser.Pleaserefertothe

“Changetheearbuds”.



4.Re‐adjustthevolumeontheheadsettoacomfortablelevel.

5.Useapenny(notincluded)tosetthesoundtomeetyourpreferencewiththebalance

knobandthetoneknobs(leftandright)thataredesignedonthebackoftheheadset.

6.Ifyoufindthesoundisnotclear,settheaudioswitchto“MONO”.

TIPS:Ifyoufindnosoundsfromtheheadset,ortheChannelindicatorontheheadset

isflashingforawhilethenlightsoff,itindicatesthatre‐pairwillbeneeded.Toget

detailedinformationpleasereferto“PairtheFMfrequency”.

7.Afteruse,turnofftheheadsetwiththeVolumecontrolanddockittothetransmitter.

PairtheFMfrequency

Thetransmitterandheadsetarepre‐paired.Ifyoufindnosoundsfromtheheadset,orthe

Channelindicatorontheheadsetisflashingforawhilethenlightsoff,itindicatesthat

re‐pairwillbeneeded.

•Checkifyouaretoofarawayfromthetransmitter.Theoperatingdistancebetweenthe

headsetandthetransmitteris5meters.

SOLUTION:Moveclosertothetransmitter.

•TheheadsetmaynotfindanidleFMfrequency.



9



SOLUTION:PresstheSearchbuttonontheheadsettore‐pairtothetransmitter.



Ifallabovesolutionsdonotwork,youmayneedtofindanotheridleFMfrequencyasper

instructionsbelow:

1.Alwaysdocktheheadsetonthetransmitter.

2.PresstheSearchbuttononthetransmitter.

ThetransmitterwillsearchanidleFMfrequencyforsignaltransmission.Channel

indicatorisflashingduringsearchingprocess.OnceadesiredFMfrequencyhasbeen

found,theindicatorlightsconstantlyandthenthetransmitterwillsendoutasignal.

3.TurntheVolumecontroltosettheheadsetON.

4.PresstheSearchbuttonontheheadset.

Theheadsetwillsearchthesignalthatwassentfromthetransmitter.Channelindicator

ontheheadsetstartstoflash,indicatingthesearchingprocess.Oncethesignalhas

beenfound,theindicatorwilllightconstantly.

NOTE:IftheChannelindicatorontheheadsetkeepsflashingforalongtime,change

anotheridleFMfrequencywithsteps2,3&4.

5.Whenthepairiscomplete,youcanenjoyyourTV.

Chargingthebatterypack

Thebatterypackscarryalittlepowerduringshipping.

Chargethebatterypacksatleast8hoursbeforefirstuse,aslowbatterylevelmayleadto

unsatisfiedsoundsuchasdistorted.

Itisrecommendedtodocktheheadsettothetransmitterafteruse.

NOTE:

•Batterypack,whichisalreadyinsertedtothetransmitter,willbechargedtofullcapacity

oncethetransmitterison.

•Thebatterypackcontainsprotectioncircuittoavoidoverchargingandhelptosave

batterylife.Whenthebatterypackisinsertedtothepower‐ontransmitter,the

transmitterwilldetectthebatterylevelandactivatethechargingfunction.

•Docktheheadsettothetransmitterandacombinationsoundwillbeheard.Thebattery

packwillbechargedoncethetransmitterispoweredon.

•Tochargetheextrabatterypack,insertsittothe

sidebatterychargeslotwiththeengravedsymbol

sidefacingdownward.Thebatterypackwillbe

chargedoncethetransmitterispoweredon.



10



•TheChargeLEDsindicatethechargingstatus.Itlightsconstantlyduringthecharging

process.Ifnobatterypackinsideorthebatterypackhasbeenfullycharged,theCharge

LEDwilllightoff.

BatteryPrecautions:Usebatterypackasrecommendedbythemanufacturer,usebattery

packotherthanrecommendedwillincreaserisksofdanger.

Replacethedrainedbatterypack

Ifyoufinddistortedsound,thebatterylevelmaybelow,docktheheadsettochargethe

batterypackor,ifyouwanttousetheheadsetcontinuously,youneedtoreplacethe

batterypack.

Changetheearbuds

Thereare3sizesofearbudsincludedtheproduct,small,mediumandlargesize.









Small Medium

Large

1.Taketheextrabatterypackoutfromthe

transmitter.

2.Griptheedgeandpulloutthebatterypackfrom

thebottomoftheunderchinheadset.Takethe

extrabatterypackoutifitisinsertedtothesideof

thetransmitter.



3.Inserttheextrabatterypackintotheunderchin

headset.Makesurethebatterypackisinstalledor

dockedproperly.



11



•Takeofftheearbudsfromtheheadset.



•Taketheearbudsfromthepackingandselectasuitableearbud

size.



•Inserttheearbudstotheheadset.



Specifications

Headsetpowersupply:1xLi‐ionbatterypack

Transmitterpowersupply:ACadapter:input120V~60Hz,

output7.5Vdc200mA

PowerConsumption:3W

FMFrequencyRange:88-108MHz

S/Nratio:45dB

OperationRange:5minopenarea

Accessories:AC/DCadapter

3.5mm‐to‐RCAAudiocable

2xLi‐ionbatterypack

3pairsofearbuds(small,mediumandlargesize,oneis

equippedontheheadsetandtheothersareinthepacking.)



12



Troubleshooting

ProblemPossibleCauseSolution

Notworking

and/ornosound.

ConnectionsbetweentheAudio

socketsontheTVandthe

transmittermaybeloose.

Checkallconnections.

Youmaybeoutoftheoperating

rangeofthetransmitter.

Moveclosertothetransmitterto

keepthedistancewithin5

meters.

Batterypackislow.Recharge/Replacethebattery

pack.

Noreception.TheDCcordofACadapteris

coiled,orliesflat.

KeeptheDCcordfullyextend

andlievertically(upordown).

Soundisnotvery

clearand/or

distorted.

Someinterferedapplianceis

usingnearby.

Turnofftheinterferedappliance.

Poorreception.Turnyourselftoanother

directionorsettheaudioswitch

toMono.

TheChannel

indicatorlightsoff

afterflashingfora

while.

Itistobedesignatedtohelpsave

powerconsumption.

PresstheSearchbuttontopair

anidleFMfrequencyandthe

indicatorwilllightagain.



13



FCC/ICES‐003STATEMENT

Warning:Changesormodificationstothisunitnotexpresslyapprovedbythepartyresponsiblefor

compliancecouldvoidtheuserauthoritytooperatetheequipment.



NOTE:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice,

pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainst

harmfulinterferenceinaresidentialinstallation.Thisequipmentgeneratesusesandcanradiateradio

frequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructions,maycauseharmful

interferencetoradiocommunications.However,thereisnoguaranteethatinterferencewillnotoccurina

particularinstallation.Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception,

whichcanbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotrytocorrectthe

interferencebyoneofthefollowingmeasures:



‐  Reorientorrelocatethereceivingantenna.

‐  Increasetheseparationbetweentheequipmentandreceiver.

‐  Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiverisconnected.

‐  Consultthedealeroranexperiencedradio/TVtechnicianforhelp.



ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwoconditions:(1)

Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptanyinterferencereceived,

includinginterferencethatmaycauseundesiredoperation.



Anychangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoid

theuser'sauthoritytooperatethisequipment.



INDUSTRYCANADA



ThisdevicecomplieswithIndustryCanadalicence‐exemptRSSstandard(s).Operationissubjecttothe

followingtwoconditions:(1)thisdevicemaynotcauseinterference,and(2)thisdevicemustacceptany

interference,includinginterferencethatmaycauseundesiredoperationofthedevice.



UnderIndustryCanadaregulations,thisradiotransmittermayonlyoperateusinganantennaofatypeand

maximum(orlesser)gainapprovedforthetransmitterbyIndustryCanada.Toreducepotentialradio



14



interferencetootherusers,theantennatypeanditsgainshouldbesochosenthattheequivalent

isotropicallyradiatedpower(e.i.r.p.)isnotmorethanthatnecessaryforsuccessfulcommunication.



Conformémentàlaréglementationd'IndustrieCanada,leprésentémetteurradiopeut

fonctionneravecuneantenned'untypeetd'ungainmaximal(ouinférieur)approuvépourl'émetteurpar

IndustrieCanada.Danslebutderéduirelesrisquesdebrouillageradioélectriqueàl'intentiondesautres

utilisateurs,ilfautchoisirletyped'antenneetsongaindesortequelapuissanceisotroperayonnée

équivalente(p.i.r.e.)nedépassepasl'intensiténécessaireàl'établissementd'unecommunication

satisfaisante.



LeprésentappareilestconformeauxCNRd'IndustrieCanadaapplicablesauxappareilsradioexemptsde

licence.L'exploitationestautoriséeauxdeuxconditionssuivantes:(1)l'appareilnedoitpasproduirede

brouillage,et(2)l'utilisateurdel'appareildoitacceptertoutbrouillageradioélectriquesubi,mêmesile

brouillageestsusceptibled'encompromettrelefonctionnement.



CALIFORNIAPROP65WARNING

"WARNING"ThisproductcontainsachemicalsknowntotheStateofCaliforniatocausebirthdefectsor

Otherreproductiveharm.Formoreinformationontheseregulationsandalistofchemicals,logonthe

Followingwebsiteaddress:

http://www.oehha.ca.gov/prop65.html



Manufacturer: Zhongshan Leetac Electronics Co., Ltd.

Address: No.3 Industrial Estate, South District, Zhongshan City, Guangdong province, P.R.China.



Leetac Electronics Technology LEETACEZ250 FM Audio Transmitter User Manual E Z250 IM R08

Zhongshan Leetac Electronics Co., Ltd. FM Audio Transmitter E Z250 IM R08

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