Boya BY- WM4 PRO User manual

BY- W M4 PRO
Dual- Chann el Digit al Wireless Microph on e

Thank you for pur chasing BOYA BY-WM4 PRO sy stem !
Designed for videographers on a lim it ed budget and
video hobbyist s, BY-WM4 PRO is a new generation
2.4GHz wireless m icrophone sy st em , dual- Channel
for capt uring audio wit h dual subj ect s to your
sm art phones, t ablet s, DSLR cam eras, consum er
cam corder s, PCs et c.
The BY-WM4 PRO syst em is suitable for a wide range
of wireless applicat ions such as int erview s, m obile
j ournalism s, report ing, vloggings, podcasts and m ore.
The BY-WM4 PRO syst em is a expandable evolut ion
sy st em t hat allows t he user t o m ix and m at ch
different kinds of receivers while using wit h t he
TX4 Pro t ransm it t er.
I n st r u ct io n M a nu a l
1

2
BY- W M 4 Pr o consist s of one bod y- p ack
t ra nsm it ter( TX4 Pr o) , a port a ble receiver
( RX4 Pr o) , a nd t heir a cce ssorie s a s
follow in g:
Tr an sm i t ter ( TX4 Pr o) Receiv er ( RX4 Pr o)
Lav alier / lapel m icr ophon e 3. 5m m t o TRS audio ou tput cable
3.5m m t o TRRS audio out put cable
Micr ophone Holder clipWind screen
Cold - sho e m ou nt

3
BY- W M 4 Pr o- K2 con sist s of t w o body- pa ck
t r a nsm it t e r s( TX 4 Pr o) , a p or t a ble r e ce iver
( RX4 Pr o) , a nd t heir a cce ssorie s a s
follow in g:
Tr an sm i t ter ( TX4 Pr o) x 2 Receiv er ( RX4 Pro)
Lav alier / lapel m icr ophon e x 2 3. 5m m t o TRS audio ou tput cable
3.5m m t o TRRS audio out put cable
Micr op ho ne Hol der clip ( x 2)Win d scr ee n ( x 2)
Cold - sho e m ou nt

4
BY- W M 4 Pr o- K3 is specially de signed for
Lig ht nin g iO S D e vice s.
I t con sist s of on e b od y- p ack t r a nsm it t e r
( TX4 Pro) , w ireless r e ce iver w it h a Lightning
con nect o r ( BY- W M 4 PRO RXD) ,and t h e ir
accessor ie s a s follow in g:
Receiv er ( BY- WM4 PRO RXD) Tr an sm i t ter ( TX4 Pr o)
Lav alier / lapel m icr ophon e
Micr ophone Holder clip
Wind scr een
Pairing Pin

5
BY- W M 4 Pr o- K4 is specially de signed for
Lig ht nin g iO S D e vice s.
I t con sist s of t w o b od y- p ack t r a nsm it t e r
( TX4 Pro) , w ireless r e ce iver w it h a Lightning
con nect o r ( BY- W M 4 PRO RXD) ,and t h e ir
accessor ie s a s follow in g:
Receiv er ( BY- WM4 PRO RXD) Tr an sm i t ter ( TX4 Pr o) x 2
Lav alier / lapel m icr ophon e x 2
Micr ophone Holder clip x2
Wind screen x 2
Pairing Pin

6
BY- W M 4 Pr o- K5 specia lly design ed for
An driod and other Type - C de vices.
I t con sist s of on e b od y- p ack t r a nsm it t e r
( TX4 Pro) , w ireless r e ce iver w it h a USB
Type - C conn ect or ( BY- W M 4 PRO RXU) ,and
t h eir a cce ssor ie s a s f ollo w in g:
Receiv er ( BY- WM4 PRO RXU) Tran sm it t er ( TX4 Pr o)
Lav alier / lapel m icr ophon e
Micr ophone Holder clip
Wind scr een
Pairing Pin

7
BY- W M 4 Pr o- K6 specia lly design ed for
An driod and other Type - C de vices.
I t con sist s of t w o b od y- p ack t r a nsm it t e r
( TX4 Pro) , w ireless r e ce iver w it h a USB
Type - C conn ect or ( BY- W M 4 PRO RXU) ,and
t h eir a cce ssor ie s a s f ollo w in g:
Receiv er ( BY- WM4 PRO RXU) Tran sm it t er ( TX4 Pr o) x 2
Lav alier / lapel m icr ophon e x 2
Micr ophone Holder clip x2
Wind screen x 2
Pairing Pin

①②
③
④
⑧
⑤
⑥⑦
8
1 . M icrophon e input
- Connect the supplied lavalier m icr ophone her e.
- Fully inser t t he m icr ophone’s 3.5m m plug and
m ake sure it click s into place.
2 . Line I n
3 . Pow e r LED
1) The power LED flash blue w hen t he unit is on.
2) The power LED glows red when low pow er.
Tr a nsm it t e r ( TX 4 Pr o)

Please don’t touch her e during using, otherw ise, it
will effect signal.
7 . Ba t t e r y com p a rt m e n t
Accom m odat es t wo pieces of AAA bat ter ies.
For m ore details, please see “ I nst alling bat t eries”
on page 11.
For m ore details, please see “ I nst alling or
uninstalling clip” on page 15.
8 . Clip
9
For m ore details about LED indicator, please refer t o
as following:
St at u s Receiv er Transm it t er
St ays blu e
Flashes cont inually
ev er y 1 second.
Flashes in blu e
Flashes in r edLow pow er
Off
Flashes in blu eOff
Flashes con t inually
ev er y 2 .5 seconds.
The t ransm it t er an d t he receiver connect s.
The t ransm it t er an d t he receiver discon nect s.
Receiver un it is tur ned OFF( Transm it t er is still ON)
Tran sm it t er unit is tur ned OFF( Receiver is still ON)
Flashes cont inually
ev er y 1 second.
4 . Pow e r OFF/ ON
5 . Pa ir
This botton is for connect ing signal.
For det ails, please see “ How t o connect transm itter
and receiver ” on page 13.
6 . An t en n a

1 . Earphon e Ja ck
( 3. 5m m diam et er st er eo m ini j ack)
To m onit or the r eceiver output , connect the
headphones t o t his connect or.
N OTE：Do n ot con nect h eadphones w it h a m onau ral m ini j ack .
This m ay lead t o sh or t - cir cuit ing of t h e head phon e
out put , result ing in dist orted sound output .
2 . LI N E OU T ( a u dio o ut pu t ) Ja ck
②
①③
④
⑤
⑥
⑦
⑧
Rece iver ( RX4 Pro)
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- For using sm art phone, t ablet or Mac
Connect one end ( 90° plug) of t he supplied
TRRS st ereo 3 .5m m m ini out put cable her e, and
t he ot her en d ( st raight plug) t o sm ar t phone.
⑨

Please don’t touch her e during using, otherw ise, it
will effect signal.
- For cam eras, cam corder s, audio recor der s and
ot her audio/ Video recor ding devices.
Connect one end of t he supplied TRS stereo 3.5m m
m ini output cable here, and the ot her end t o cam era.
3 . Pow e r LED
For m ore details, please see “ Power LED” on page 7.
4 . Pow e r OFF/ ON
Press these but tons t o set t he at t enuation level of
the input signal.
6 . An t en n a
7 . Ba t t e r y com p a rt m e n t
Accom m odat es t wo pieces of AAA bat ter ies.
For m ore details, please see “ I nst alling bat t eries”
on page 11.
8 . Clip
For m ore details, please see “ I nst alling or
uninstalling clip” on page 15.
9 . Sh oe m o un t a da p t er
11
5 . Volu m e + / -

W h a t ’s dif fe r e nce ?
MICROPHONESMARTPHONE3.5 m m TRS connect or
2
- For cam eras, cam corder s, audio recor der s and
ot her audio/ video recording devices.
3.5 m m TRRS connect or
- For Sm art phone, t ablet , Mac or lapt op wit h
com bo h eadphone/ Mic j ack
1
Connect t o
Receiv er “ LI NE OUT” Con nect t o Sm art ph on e
12

H ow t o u se it
I n st a llin g ba t t e r ie s
1. Bot h t ransm it ter and receiver r equires t wo AAA size
bat ter ies.
2. Slide and r em ove the t ransm it ter’s bat t ery
com part m ent cover.
3. I nsert t wo pieces of bat t eries.
4. Close t he bat tery com part m ent cover.
5. Do t he sam e ways as step 2 t o 4 t o inser t bat t ery
int o receiver.
13

Con nect ing t h e t r a nsm it t e r a n d r e ce iv er
Usin g t h e m icr op ho ne w it h sm a r t ph on e , t a ble t ,
M a c o r la p t op w it h com b o h e a dp ho ne / M ic j a ck .
Re ceiver
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1. Mount receiver t o Sm ar tphone, t ablet, Mac or lapt op.
2. Using TRRS cable, plug the 3.5 m m connect or(st raight
plug) int o t he audio j ack of your sm artphone.
3. I nsert t he 90° plug of t he connect ing cable into
t he r eceiver “ LI NE OUT” j ack .
4. I nsert ear phone int o r eceiver “ ” for m onit oring
Sound if you need.
5. Slider t he power ON/ OFF switch to ON posit ion ( t he
LED indicat or w ill light in blue)
Caut ion: Please do not m ix up plug, for det ails, please
refer t o” What ’s difference” on page 8.
N OTE:
Not all Android devices support ex ter nal m icr ophone
when t aking video, and you m ay need to download a
third- party app and set up sound source as external
m icrophone.

H ow t o co nn e ct t ra n sm it t e r a n d r e ce iv e r?
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I f t ransm it t er s and r eceiver disconnect , please follow
below st eps:
Ot herwise, t he light for receiver and t ransm it ters will
flash cont inually every 1 second, t hen t ry 1- 4 st eps
again.
Before leaving fact or y, t he connect ion of transm it t ers
and receiver w ill be est ablished.
1. Turn on the receiver and t he t ransm itters.
2. Press t he bu t ton “ + ” an d “ - “ for 3 seconds for
receiver and press " Pair " of one transm itter for 3
seconds at t he sam e t im e.
3. When t ransm itter and r eceiver connect s, t he light
of receiver will st ay blue, t he light of t ransm it ters
will flash every 2.5 seconds.
4. Repeat st ep 2 for t he ot her t ransm itter.

Using t he m icrophon e w it h cam era s, ca m cor de rs,
audio recor de r s and ot h er a udio/ video r ecor ding
de vices.
Re ceiver
16
1. Mount receiver t o cam eras, cam corders, audio
recor ders and ot her audio/ video recording devices.
2. Using TRS cable, plug t he 3.5 m m connect or into the
audio j ack of y ou r cam er a.
3. I nsert t he ot her end of t he connect ing cable int o
t he r eceiver “ LI NE OUT” j ack .
4. I nsert ear phone int o r eceiver “ ” for m onit oring
Sound if you need.
5. Slider t he power ON/ OFF switch to ON posit ion ( t he
LED indicat or w ill light in blue)
Caut ion: Please do not m ix up audio cable, for det ails,
please refer t o” What’s difference on page 8”.

17
I n st a llin g or u n in st a lli ng clip
1. Clip is m ount ed on t he m icrophone before leaving
factory.
2. Bot h t ransm it ter and receiver include clip, t hat m eans
you can m ount them in any place you want .
3. Adj ust the direct ion of the m icrophone t o your m out h
by rot at ing t he Microphone.
I f r eceiv er need t o be m ount ed ont o cam era hot / cold
shoe, please follow below st eps:
1. Push t he clip t o right side.

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2. Push t he cold shoe m ount on t he posit ion.
3. Mount ed receiv er ont o cam era hot / cold shoe

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BY- W M4 PRO RXD
2 .4 GH z W ir eless Receive r
For iOS device s