Thank you for purchasing the BOYA BY-WM4! The BOYA BY-WM4 is a compact wireless microphone system designed for reliable and trouble-free performance. It is compatible with Smartphones, Tablets, DSLR cameras, Camcorders, Audio recorders, PCs, and other audio/video devices.
Safety Information ?
This symbol indicates that there are important operating and maintenance instructions in the literature accompanying your microphone.
- Please read these instructions for use thoroughly before using this equipment for the first time. It contains essential information to avoid damage to persons or property.
- Heed all warnings and follow all instructions.
- Do not use this microphone near water and clean only with a dry cloth.
- Only use attachments/accessories specified by the manufacturer.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as liquid spillage, objects falling into the apparatus, exposure to rain or moisture, abnormal operation, or if the apparatus has been dropped.
- To protect the device from damage or malfunction, do not expose it to rain, moisture, or excessive humidity.
- Batteries should not be exposed to excessive heat, such as direct sunlight, fire, or being left in a hot car.
- Take great care when using the microphone around moving objects or in situations where the cable could be suddenly tugged or pulled.
Package Contents
- Transmitter
- Receiver
- Lavalier/lapel microphone
- 3.5mm to TRS audio output cable
- 3.5mm to TRRS audio output cable
- Cold-shoe mount
- Hard case
- User guide
Transmitter
The transmitter is a compact unit designed to capture audio. It features:
- 1. Microphone input: Connect the supplied lavalier microphone here. Ensure the microphone's 3.5mm plug is fully inserted and clicks into place.
- 2. Line In: (Function not detailed in this section)
- 3. Power LED: Indicates the unit's status.
- 4. Power OFF/ON: Switch to turn the unit on or off.
- 5. Button +/-: Used for connecting signals (refer to connection section).
- 6. Antenna: Please avoid touching the antenna during use as it may affect signal transmission.
- 7. Battery compartment: Accommodates one AA battery.
- 8. Clip: Allows the transmitter to be clipped onto clothing or a belt.
LED Indicator Status:
| Status | Receiver | Transmitter |
|---|---|---|
| Unit is turned ON | Flashing | Flashing continually every 2.5 seconds |
| Wireless communication is established | (Implied: Flashing) | (Implied: Flashing) |
| Receiver unit is turned OFF (Transmitter is still ON) | Off | Flashing |
| Transmitter unit is turned OFF (Receiver is still ON) | Flashing | Off |
| Low power | Flashing in red | Flashing in red |
Operation:
- Insert the lavalier/lapel microphone into the transmitter's microphone input.
- Slide the power ON/OFF switch to the ON position; the LED indicator will light blue.
- Use the belt clip on the back to attach the transmitter to a belt, or place it in a pocket.
- If the transmitter and receiver are connected, the light will flash every 2.5 seconds. If not connected, it will flash rapidly.
- The transmitter and receiver are pre-connected before leaving the factory.
- To re-connect if disconnected: Turn on the receiver, press and hold the "+" and "-" buttons simultaneously for 3 seconds. Repeat for the transmitter. Successful connection is indicated by both LEDs flashing blue.
Receiver
The receiver unit connects to your recording device and features:
- 1. Earphone Jack: A 3.5mm diameter stereo mini jack for monitoring audio output. Connect headphones here. NOTE: Do not connect headphones with a monaural mini jack, as this may cause short-circuiting and distorted sound.
- 2. LINE OUT (audio output) Jack: Connects to your audio/video recording devices.
- 3. Power LED: Indicates the unit's status.
- 4. Power OFF/ON: Switch to turn the unit on or off.
- 5. Volume +/-: Buttons to set the attenuation level of the input signal.
- 6. Antenna: Please avoid touching the antenna during use as it may affect signal reception.
- 7. Battery compartment: Accommodates one AA battery.
- 8. Clip: Allows the receiver to be clipped onto clothing or a belt.
- 9. Shoe mount adapter: For mounting the receiver onto a camera's hot/cold shoe.
Connector Types: What's the Difference?
The BY-WM4 system includes two types of audio output cables to ensure compatibility with different devices:
- 3.5mm TRRS connector: This cable is for use with Smartphones, Tablets, and Macs. It features a 90° plug for the receiver and a straight plug for the device's audio jack.
- 3.5mm TRS connector: This cable is for use with cameras, camcorders, audio recorders, and other audio/video recording devices. It features a standard 3.5mm connector for both the receiver and the device.
Precautionary Measures When Using Batteries
Improper handling of batteries can lead to leakage or explosion. Please observe the following safety notes:
- Use only the battery types mentioned in these operating instructions (AA size).
- Do not dispose of batteries in fire or expose them to direct heat.
- To prevent product damage, remove batteries if the product will not be used for an extended period or if the batteries have been discharged.
- If battery fluid comes into contact with skin or clothes, rinse immediately with fresh water.
How to Use
Inserting Batteries
- Both the transmitter and receiver require one AA size battery.
- Slide and remove the battery compartment cover on the transmitter.
- Insert one AA battery.
- Close the battery compartment cover.
- Repeat steps 2-4 for the receiver.
Connecting the Transmitter and Receiver
Using the Microphone with Smartphone, Tablet, or Mac
- Mount the receiver onto your Smartphone, Tablet, or Mac.
- Using the 3.5mm TRRS cable, plug the straight plug into the audio jack of your smartphone/tablet/Mac.
- Insert the 90° plug of the connecting cable into the receiver's "LINE OUT" jack.
- Insert earphones into the receiver's earphone jack for monitoring sound.
- Slide the power ON/OFF switch to the ON position (the LED indicator will light blue).
- Caution: Ensure you use the correct plug for your device; refer to "Connector Types" for details.
Using the Microphone with Cameras, Camcorders, Audio Recorders, and Other Audio/Video Recording Devices
- Mount the receiver onto your camera, camcorder, or other recording device.
- Using the 3.5mm TRS cable, plug the 3.5mm connector into the audio jack of your camera.
- Insert the other end of the connecting cable into the receiver's "LINE OUT" jack.
- Insert earphones into the receiver's earphone jack for monitoring sound.
- Slide the power ON/OFF switch to the ON position (the LED indicator will light blue).
- Caution: Ensure you use the correct audio cable; refer to "Connector Types" for details.
For transmitter setup, refer to the "Transmitter" section.
Installing the Microphone
- The clip is pre-mounted on the microphone before leaving the factory.
- Both the transmitter and receiver have clips, allowing them to be mounted anywhere.
- Adjust the microphone's direction towards your mouth by rotating it.
Mounting the Receiver onto a Camera Hot/Cold Shoe
- Push the receiver's clip to the right side.
- Screw the shoe mount adapter onto the receiver.
- Mount the receiver onto the camera's hot/cold shoe.
Key Features
- Clear recording sound
- Compatible with smartphones, DSLR cameras, consumer camcorders, PCs, etc.
- Light and compact for easy carrying
- Omnidirectional lavalier microphone
- Easy to use
- Hard case included
- Standard camera shoe mount and clip included
- Up to 25m (82ft) operation range
- Power supplied by one AA battery per unit
Technical Specifications
| Parameter | Specification |
|---|---|
| RF Modulation | FS (Frequency Shift Keying) |
| Frequency Band | 2.4GHz (2405-2478MHz) |
| Frequency Response | 35Hz-14kHz ±3dB |
| Signal/Noise Ratio | 76dB or more |
| Distortion | 0.1% or less (1kHz, 65mW output) |
| RF Output Level | 2 mW |
| Earphone Output Level | 32Ω, 65mW |
| Reception Sensitivity | -85dB +/- 3dB / 0dB=1V/Pa, 1kHz |
| Audio Input Connector | 3.5mm mini jack |
| Operation Range | 25m (80ft) |
| Power Requirements | 1.5V DC (One AA size battery per unit) |
| Consumption Power | Transmitter: 1.5V/120 mA Receiver: 1.5V/120 mA |
| Battery Life | Transmitter: Approx. 3.0 hours Receiver: Approx. 3 hours |
| Dimensions (W/H/D) | Transmitter: 60mm x 86mm x 28mm (2.36 x 3.3 x 1.1 inches) Receiver: 60mm x 86mm x 41mm (2.36 x 3.3 x 1.61 inches) |
| Weight (Without battery) | Transmitter: 136g (4.37oz) Receiver: 152g (4.89oz) |
Important Notes and Warnings
CAUTION
- Please use the original Audio Signal Cable provided for better compatibility and sound quality.
- The specified operation range is approximate and applies when there are no obstructions between the transmitter and receiver. This distance can vary due to metal objects, people, and other obstructions affecting signal strength.
- Battery life may vary depending on the type of battery used.
IMPORTANT
- If you do not intend to use the wireless microphone for a long period, remove the batteries from both the transmitter and receiver.
- Avoid touching the lavalier/lapel microphone, transmitter, or receiver while recording, as this can cause unwanted noise.
- Do not place the transmitter near high-voltage equipment or devices emitting strong electromagnetic fields, as this may cause noise.
- Do not use or leave the transmitter and receiver in hot or humid conditions.
- Do not leave the receiver attached to the camera when storing the camera in a case.
- Ensure you use the correct transmitter and receiver pairing.
WARNING
- Keep the wireless microphone out of the reach of children.
- Never use leaking batteries and never expose batteries to excessive heat or fire.
Maintenance
- Do not operate the device with wet hands or feet.
- Clean the equipment only as described in these instructions for use.
- Take care to prevent the equipment from dropping. Ensure the device is properly fastened and reliably mounted. If the device has been dropped, have it inspected by a skilled technician before switching it on again.
- Should the equipment be damaged, defective, or if you notice a scorching smell: Immediately interrupt the power supply by removing the batteries. Do not operate the device with a damaged housing. Do not attempt to repair the device yourself; have it repaired only by a skilled technician.
- Always keep your device in good condition as specified in these instructions for use.
- Do not open the device.
FCC Compliance Information
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.
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. 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 or more 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.
RF warning statement: The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
