Page 1
BY-WM4 PRO Dual-Channel Digital Wireless Microphone...
Page 2
DSLR cameras, consumer camcorders, PCs etc. The BY-WM4 PRO system is suitable for a wide range of wireless applications such as interviews, mobile journalisms, reporting, vloggings, podcasts and more. The BY-WM4 PRO system is a expandable evolution...
Page 3
BY-WM4 Pro consists of one body-pack transmitter(TX4 Pro), a portable receiver (RX4 Pro), and their accessories as following: Transmitter(TX4 Pro) Receiver(RX4 Pro) Lavalier/lapel microphone 3.5mm to TRS audio output cable 3.5mm to TRRS audio output cable Cold-shoe mount Wind screen...
Page 4
BY-WM4 Pro-K2 consists of two body-pack transmitters(TX4 Pro), a portable receiver (RX4 Pro), and their accessories as following: Transmitter(TX4 Pro) x2 Receiver(RX4 Pro) Lavalier/lapel microphone x2 3.5mm to TRS audio output cable 3.5mm to TRRS audio output cable Cold-shoe mount...
Page 5
BY-WM4 Pro-K3 is specially designed for Lightning iOS Devices. It consists of one body-pack transmitter (TX4 Pro), wireless receiver with a Lightning connector (BY-WM4 PRO RXD),and their accessories as following: Receiver(BY-WM4 PRO RXD) Transmitter(TX4 Pro) Lavalier/lapel microphone Wind screen Microphone Holder clip...
Page 6
BY-WM4 Pro-K4 is specially designed for Lightning iOS Devices. It consists of two body-pack transmitter (TX4 Pro), wireless receiver with a Lightning connector (BY-WM4 PRO RXD),and their accessories as following: Receiver(BY-WM4 PRO RXD) Transmitter(TX4 Pro) x2 Lavalier/lapel microphone x2 Wind screen x2...
Page 7
BY-WM4 Pro-K5 specially designed for Andriod and other Type-C devices. It consists of one body-pack transmitter (TX4 Pro), wireless receiver with a USB Type-C connector (BY-WM4 PRO RXU),and their accessories as following: Receiver(BY-WM4 PRO RXU) Transmitter(TX4 Pro) Lavalier/lapel microphone Wind screen...
Page 8
BY-WM4 Pro-K6 specially designed for Andriod and other Type-C devices. It consists of two body-pack transmitter (TX4 Pro), wireless receiver with a USB Type-C connector (BY-WM4 PRO RXU),and their accessories as following: Receiver(BY-WM4 PRO RXU) Transmitter(TX4 Pro) x2 Lavalier/lapel microphone x2...
Page 9
Transmitter (TX4 Pro) ① ② ③ ⑧ ④ ⑤ ⑥ ⑦ 1. Microphone input - Connect the supplied lavalier microphone here. - Fully insert the microphone’s 3.5mm plug and make sure it clicks into place. 2. Line In 3. Power LED 1) The power LED flash blue when the unit is on.
Page 10
For more details about LED indicator, please refer to as following: Status Receiver Transmitter Flashes continually The transmitter and the receiver connects. Stays blue every 2.5 seconds. Flashes continually Flashes continually The transmitter and the receiver disconnects. every 1 second. every 1 second.
Page 11
Receiver (RX4 Pro) ② ⑨ ① ③ ⑧ ④ ⑤ ⑥ ⑦ 1. Earphone Jack (3.5mm diameter stereo mini jack) To monitor the receiver output, connect the headphones to this connector. NOTE: Do not connect headphones with a monaural mini jack. This may lead to short-circuiting of the headphone output, resulting in distorted sound output.
Page 12
- For cameras, camcorders, audio recorders and other audio/Video recording devices. Connect one end of the supplied TRS stereo 3.5mm mini output cable here, and the other end to camera. 3. Power LED For more details, please see “Power LED” on page 7. 4.
Page 13
What’s difference? 3.5 mm TRRS connector - For Smartphone, tablet, Mac or laptop with combo headphone/Mic jack Connect to Receiver “LINE OUT” Connect to Smartphone SMARTPHONE MICROPHONE 3.5 mm TRS connector - For cameras, camcorders, audio recorders and other audio/video recording devices.
Page 14
How to use it Installing batteries 1. Both transmitter and receiver requires two AAA size batteries. 2. Slide and remove the transmitter’s battery compartment cover. 3. Insert two pieces of batteries. 4. Close the battery compartment cover. 5. Do the same ways as step 2 to 4 to insert battery into receiver.
Page 15
Connecting the transmitter and receiver Using the microphone with smartphone, tablet, Mac or laptop with combo headphone/Mic jack. Receiver 1. Mount receiver to Smartphone, tablet, Mac or laptop. 2. Using TRRS cable, plug the 3.5 mm connector(straight plug) into the audio jack of your smartphone. 3.
Page 16
How to connect transmitter and receiver? Before leaving factory, the connection of transmitters and receiver will be established. If transmitters and receiver disconnect, please follow below steps: 1. Turn on the receiver and the transmitters. 2. Press the button “+” and “-“ for 3 seconds for receiver and press "Pair"...
Page 17
Using the microphone with cameras, camcorders, audio recorders and other audio/video recording devices. Receiver 1. Mount receiver to cameras, camcorders, audio recorders and other audio/video recording devices. 2. Using TRS cable, plug the 3.5 mm connector into the audio jack of your camera. 3.
Page 18
Installing or uninstalling clip 1. Clip is mounted on the microphone before leaving factory. 2. Both transmitter and receiver include clip, that means you can mount them in any place you want. 3. Adjust the direction of the microphone to your mouth by rotating the Microphone.
Page 19
2. Push the cold shoe mount on the position. 3. Mounted receiver onto camera hot/cold shoe...
Page 20
BY-WM4 PRO RXD 2.4GHz Wireless Receiver For iOS devices...
Page 21
Receiver (BY-WM4 PRO RXD) ③ ② ④ ⑤ ⑥ ① ⑦ 1. Headphone Jack (3.5mm diameter stereo mini jack) To monitor the receiver output, connect the headphones to this connector. NOTE: Do not connect headphones with a monaural mini jack.
Page 22
2. Power LED For more details about LED indicator, please refer to as following: Status Receiver Transmitter The indicator won't light up Flashes continually The transmitter and the receiver connects. until you turn on every 2.5 seconds. the audio/video app. Flashes continually Flashes continually The transmitter and the receiver disconnects.
Page 23
Set Up Guide 1. Plug the BY-WM4 PRORXD directly into the lightning port of smartphone. 2. Open the audio/video app on mobile device, then the indicator of receiver should be light up. 3. The Power LED flashes slowly waiting for connecting with the transmitter.
Page 24
Connecting the transmitter and the Receiver Before leaving factory, the connection of transmitters and receiver will be established. If transmitters and receiver disconnect, please follow below steps: 1.Turn on the transmitter and plug the receiver into smartphone. 2. Long press the pair bottom of receiver with pair pin, the indicator of receiver will flash quickly when entering paring mode.
Page 25
BY-WM4 PRO RXU 2.4GHz Wireless Receiver For Android and other Type-C devices...
Page 26
Receiver (BY-WM4 PRO RXU) ③ ② ④ ⑤ ⑥ ① ⑦ 1. Headphone Jack (3.5mm diameter stereo mini jack) To monitor the receiver output, connect the headphones to this connector. NOTE: Do not connect headphones with a monaural mini jack.
Page 27
2. Power LED For more details about LED indicator, please refer to as following: Status Receiver Transmitter Flashes continually The transmitter and the receiver connects. Stays blue every 2.5 seconds. Flashes continually Flashes continually The transmitter and the receiver disconnects. every 1 second.
Page 28
Set Up Guide 1. Plug the BY-WM4 PRO RXU directly into the lightning port of smartphone. 2. The Power LED flashes slowly waiting for connecting with the transmitter.
Page 29
Connecting the transmitter and the Receiver Before leaving factory, the connection of transmitters and receiver will be established. If transmitters and receiver disconnect, please follow below steps: 1.Turn on the transmitter and plug the receiver into smartphone. 2. Long press the pair bottom of receiver with pair pin, the indicator of receiver will flash quickly when entering paring mode.
Page 30
Troubleshooting If you have any problem using the BY-WM4 Pro components, use the following checklist. If any problem persist, please consult our local dealer, or contact us directly. Status Cause Measure The batteries of BY-WM4 PRO Replace the batteries with TX exhausted.
Page 31
• Up to 60m (197ft) operation range (without obstacle) • Monitoring sound by 3.5mm headphone output • Master volume control • Selectable stereo and mono mode (For BY-WM4 PRO RXD/RXU only) • Omnidirectional lavalier microphone • Standard camera shoe mount and clip included (For BY-WM4 PRO/BY-WM4 PRO-K2 only) •...
Page 32
TX4 Pro/RX4 Pro: 3V DC (Two AAA size batteries) Power requirements: BY-WM4 PRO RXD: Supplied by iOS device BY-WM4 PRO RXU: Supplied by USB Type-C device BY-WM4 PRO RXD: Apple MFi Certified Lightning Connector Plug: BY-WM4 PRO RXU: USB Type-C Connector Receiver:3V/70mA Transmitter: 3V/70mA...
Page 33
CAUTION 1.Please use our original audio signal cable which is equipped, it’s more compatible with the wireless microphone, and make the sound better. 2.The figure given is only the approximate value that applies when there are no obstructions between the transmitter and receiver.
Page 34
MAINTENANCE • Do not operate the device with wet hands or feet. • Clean the equipment only in the way described in the instructions for use. • Take care to prevent the equipment from dropping down.Make sure that the device is properly fastened and reliably mounted.
Page 35
Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user's 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.
Need help?
Do you have a question about the BY-WM4 PRO and is the answer not in the manual?
Questions and answers