BOYA BY-WM4 Wireless Microphone Instruction Manual

Introduction

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 important operating and maintenance instructions.

• Read these instructions thoroughly before first use to avoid damage to persons or property.
• Heed all warnings and follow all instructions.
• Do not use near water; clean only with a dry cloth.
• Use only manufacturer-specified attachments/accessories.
• Refer servicing to qualified personnel for damage, liquid spills, exposure to rain/moisture, abnormal operation, or drops.
• Protect the device from damage or malfunction by avoiding rain, moisture, or excessive humidity.
• Batteries should not be exposed to excessive heat (direct sunlight, fire, hot car).
• Exercise caution with the microphone around moving objects or where cables could be tugged.

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 Overview

The transmitter unit includes:

• 1. Microphone input: Connect the supplied lavalier microphone here. Ensure the 3.5mm plug clicks into place.
• 2. Line In: (Not detailed in text, likely for external audio source)
• 3. Power LED: Blue indicates unit is on; Red indicates low power.
• 4. Power OFF/ON: Switch to turn the unit on or off.
• 5. Volume +/- Buttons: Used for connecting signal (details on page 9).
• 6. Antenna: Do not touch during use as it affects signal.
• 7. Battery compartment: Accommodates one AA battery.
• 8. Clip: For attaching the unit to clothing or belts.

LED Indicator Status:

Receiver Overview

The receiver unit includes:

• 1. Earphone Jack: (3.5mm stereo mini jack) Connect headphones here to monitor receiver output. Note: Do not connect monaural mini jack headphones to avoid short-circuiting.
• 2. LINE OUT (audio output) Jack:
  • For Smartphones, tablets, or Macs: Connect the 90° plug end of the TRRS cable here and the straight plug end to the smartphone.
  • For cameras, camcorders, audio recorders, etc.: Connect one end of the TRS stereo 3.5mm mini output cable here and the other end to the camera's audio input.
• 3. Power LED: Details provided in the LED indicator table.
• 4. Power OFF/ON: Switch to turn the unit on or off.
• 5. Volume +/- Buttons: Set the attenuation level of the input signal.
• 6. Antenna: Do not touch during use as it affects signal.
• 7. Battery compartment: Accommodates one AA battery.
• 8. Clip: For attaching the unit.
• 9. Shoe mount adapter: For mounting the receiver onto a camera's hot/cold shoe.

Understanding Cable Differences

The BY-WM4 uses two types of audio output cables:

• 3.5mm TRRS connector: For Smartphones, tablets, or Macs. Connects to the receiver's "LINE OUT" and the smartphone's audio jack.
• 3.5mm TRS connector: For cameras, camcorders, audio recorders, and other audio/video recording devices. Connects to the receiver's "LINE OUT" and the camera's audio jack.

Caution: Ensure you use the correct cable for your device to avoid issues.

Precautionary Measures When Using Batteries

Improper handling of batteries can lead to leakage or explosion. Observe these safety notes:

• Use only specified batteries.
• Do not expose batteries to fire or direct heat.
• Remove batteries if the product will not be used for an extended period or if they are discharged to prevent damage.
• If battery fluid contacts skin or clothes, rinse immediately with fresh water.

How to Use

Inserting Batteries

1. Both transmitter and receiver require one AA size battery.
2. Slide and remove the battery compartment cover.
3. Insert one battery.
4. Close the battery compartment cover.
5. Repeat for the other unit.

Connecting the Transmitter and Receiver

The transmitter and receiver are pre-paired before leaving the factory. If they disconnect, follow these steps to re-pair:

1. Turn on the receiver.
2. Press and hold the "+" and "-" buttons on the receiver simultaneously for 3 seconds.
3. Repeat steps 1 and 2 for the transmitter.

Successful pairing is indicated when the LED lights on both units flash blue. If unsuccessful, repeat the steps.

Using the Microphone with Smartphones, Tablets, or Macs

1. Mount the receiver to your smartphone, tablet, or Mac.
2. Using the TRRS cable, plug the 3.5mm connector (straight plug) into your smartphone's audio jack.
3. Insert the 90° plug of the connecting cable into the receiver's "LINE OUT" jack.
4. Insert earphones into the receiver's earphone jack for monitoring sound.
5. Slide the power ON/OFF switch to the ON position. The LED indicator will light blue.

Caution: Ensure correct plug usage; refer to "What's Difference?" on page 6.

Using the Microphone with Cameras, Camcorders, Audio Recorders, etc.

1. Mount the receiver to your camera, camcorder, or audio recording device.
2. Using the TRS cable, plug the 3.5mm connector into your camera's audio jack.
3. Insert the other end of the connecting cable into the receiver's "LINE OUT" jack.
4. Insert earphones into the receiver's earphone jack for monitoring sound.
5. Slide the power ON/OFF switch to the ON position. The LED indicator will light blue.

Caution: Ensure correct audio cable usage; refer to "What's Difference?" on page 6.

Transmitter Setup

For transmitter setup, refer to the "Transmitter" section.

Installing the Microphone

1. The clip is mounted on the microphone before leaving the factory.
2. Both transmitter and receiver have clips, allowing mounting anywhere desired.
3. Adjust the microphone's direction towards your mouth by rotating it.

Mounting the Receiver onto a Camera Hot/Cold Shoe

1. Push the clip on the receiver to the right side.
2. Screw the shoe mount adapter onto the receiver as shown in the diagram.
3. Mount the receiver onto the camera's hot/cold shoe.

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
• Powered by two AA batteries (one per unit)

Specifications

• RF Modulation: GFSK (Gauss frequency Shift Keying)
• Frequency band: 2.4GHz (2405-2478MHz)
• Frequency response: 35Hz-14KHz±3dB
• Signal/Noise: 76dB or more
• Distortion: 0.1% or less (32Ω, 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)
• Consumption power: Transmitter: 1.5V/120 mA; Receiver: 1.5V/120 mA
• Battery life: Transmitter: Approx. 3.0 hours; Receiver: Approx. 3 hours
• Dimensions:
  • Transmitter: 60mm x 86mm x 28mm (W/H/D) (2.36 x 3.3 x 1.1 inches)
  • Receiver: 60mm x 86mm x 41mm (W/H/D) (2.36 x 3.3 x 1.61 inches)
• Weight:
  • Transmitter: 136g (4.37oz) (Without battery)
  • Receiver: 152g (4.89oz) (Without battery)

CAUTION

• Use the original Audio Signal Cable for better compatibility and sound.
• Operation range is approximate and varies with obstructions (metal objects, people) and signal strength.
• Battery life may vary depending on battery type.

IMPORTANT

• Remove batteries if the wireless microphone will not be used for a long period.
• Avoid touching the lavalier/lapel microphone, transmitter, or receiver during recording to prevent noise.
• Keep the transmitter away from high-voltage equipment or strong electromagnetic fields to prevent noise.
• Do not use or leave the transmitter and receiver in hot, humid places.
• Do not leave the receiver attached to the camera when storing the camera in a case.
• Do not mix up transmitter and receiver units.

MAINTENANCE

• Do not operate with wet hands or feet.
• Clean equipment only as described in the instructions.
• Prevent the equipment from dropping. Ensure it is properly fastened and mounted. If dropped, have it inspected by a skilled electrician before reuse.
• If equipment is damaged, defective, or shows a scorching smell: immediately remove batteries, do not operate with a damaged housing, and do not attempt self-repair. Have it repaired by a skilled electrician.
• Keep the device in good condition as per instructions.
• Do not open the device.

WARNING

• Keep the wireless microphone out of the reach of children.
• Never use leaking batteries or expose batteries to excessive heat or fire.

FCC STATEMENT

This device complies with Part 15 of the FCC Rules. Operation is subject to two conditions: (1) it may not cause harmful interference, and (2) it 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 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 causes 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 and can be used in portable exposure conditions without restriction.

Contact Information

BOYA AUDIO EQUIPMENT (SHENZHEN) CO., LIMITED

Address: A16 building, New Material Industrial Park of Silicon Valley Power, Guanlan Town, Shenzhen, China

Tel: (86)0755-28435910

Email: sales@boya-mic.com

Website: www.boya-mic.com