1. Introducció
The BOYA BY-WFM12 is a 12-channel VHF wireless microphone system designed to capture audio for smartphones, tablets, DSLR cameras, camcorders, audio recorders, and PCs. This system offers high-band VHF operation for superior sound quality and features such as real-time sound monitoring and card recording capabilities to prevent missing recordings.
2. Què hi ha a la caixa
- Unitat transmissora
- Unitat receptora
- micròfon de solapa
- Adaptador de muntatge de sabates fredes
- 3.5mm TRS to TRS Output Cable (for cameras)
- 3.5mm TRS to TRRS Output Cable (for smartphones)
- Belt Clips (pre-attached)
- Windscreen for Lavalier Microphone
- Targeta de garantia
- Manual d'usuari
- AA Batteries (may vary by package)
3. Característiques del producte
- Compatibilitat: Works with smartphones, tablets, DSLRs, camcorders, audio recorders, PCs, etc.
- 12 Switchable Channels: Provides multiple frequency options to avoid interference.
- High-Band VHF Operation: Ensures superior sound quality.
- Roda de control de volum: Allows precise audio level adjustment.
- Detachable and Flexible Antenna: Features 360° rotation for optimal signal reception.
- Interval sense fil: Operates up to 40m (131 feet) away without obstacles.
- Funciona amb bateria: Both receiver and transmitter use two AA size alkaline batteries.
- Registre de targetes: Transmitter supports MicroSD card recording (up to 32GB) to prevent missing recordings and allow direct editing without conversion.
- Monitorització en temps real: Receiver monitor jack allows real-time audio status check.
- Infrared Sync Pairing: Seamlessly docks wireless channels for quick setup.
4. Guia de configuració
4.1 Instal·lació de bateries
Open the battery compartment on both the transmitter (TX) and receiver (RX) units. Insert two AA batteries into each unit, ensuring correct polarity. Close the battery compartments securely.

Figure 1: Transmitter and Receiver units with open battery compartments, showing where to insert AA batteries.
4.2 Attaching the Lavalier Microphone
Connect the 3.5mm plug of the lavalier microphone to the 'MIC IN' port on the transmitter unit. Secure the microphone to your clothing using the clip, positioning it approximately 6-8 inches from your mouth for optimal sound capture. Attach the foam windscreen to the lavalier microphone to reduce plosives and wind noise.
4.3 Connecting to Your Recording Device
- For Cameras/Camcorders: Use the supplied 3.5mm TRS to TRS output cable. Connect one end to the 'OUTPUT' port on the receiver and the other end to the microphone input jack of your camera.
- Per a telèfons intel·ligents/tauletes: Use the supplied 3.5mm TRS to TRRS output cable. Connect one end to the 'OUTPUT' port on the receiver and the other end to the headphone/microphone jack of your smartphone/tablet.

Figure 2: The BY-WFM12 system connected to a smartphone for mobile recording.

Figure 3: The BY-WFM12 system connected to a DSLR camera for professional video recording.
5. Instruccions de funcionament
5.1 Engegada/apagada
Press and hold the power button on both the transmitter and receiver units until their respective screens light up. To power off, press and hold the power button again.
5.2 Channel Pairing (Infrared Sync)
Ensure both the transmitter and receiver are powered on. Align the infrared sensors on both units (usually located on the side). Press the 'SET' button on one unit to initiate pairing. The units will automatically scan and pair to an available channel. The screen will display the selected channel.

Figure 4: Close-up of the Transmitter and Receiver units, highlighting their displays and controls.
5.3 Ajust del volum
Use the volume control wheel on the receiver unit to adjust the output audio level to your recording device. Monitor the audio levels on your camera or through headphones connected to the receiver's monitor jack to prevent clipping or low volume.
5.4 Monitorització d'àudio en temps real
Connect headphones to the 'MONITOR' jack on the receiver unit to listen to the audio being captured in real-time. This helps ensure clear audio and proper functioning during recording.
5.5 On-board Recording (Transmitter)
Insert a MicroSD card (up to 32GB) into the dedicated slot on the transmitter unit. Refer to the user manual for specific instructions on how to initiate and stop recording directly on the transmitter. This feature provides a backup recording in case of wireless interference or dropouts.
6. Manteniment
- Keep the device dry. Do not expose it to water or moisture.
- Use a soft, dry cloth to clean the units. Avoid harsh chemicals or abrasive materials.
- Traieu les piles si no heu d'utilitzar el dispositiu durant un període prolongat per evitar fuites.
- Guardeu el sistema en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
7. Solució De Problemes
- Sense so: Check battery levels, ensure units are powered on and paired, verify cable connections, and adjust volume levels.
- Interferències/Soroll: Try switching to a different channel using the infrared sync function. Ensure the antenna is properly positioned.
- Interval pobre: Ensure there are no major obstacles between the transmitter and receiver. Check battery levels.
- Problemes de gravació: Ensure MicroSD card is properly inserted and formatted. Check available storage space.
8. Especificacions
| Característica | Especificació |
|---|---|
| Interval de freqüència de la portadora | 540 MHz - 592 MHz |
| Nombre de canals | 99 |
| Resposta de freqüència | 60 - 17KHz |
| Distància efectiva | About 150 meters (131 feet without obstacles) |
| Antena | 1/4 Conductor |
| Interfície d'àudio | Interfície TRS de 3.5 mm |
| Relació senyal/soroll | ≥75 dB |
| Distorsió harmònica total | 0.5% |
| Retard de so | <1mS |
| Potència de sortida dels auriculars | 90 mW |
| Potència de sortida de RF | 30 mW |
| Supressió espúria | -60 dB |
| Antena | Soft antenna |
| Interfície d'entrada d'àudio | Interfície TRS de 3.5 mm |
| Gravació SampTarifa ling | 16bit 48K |
| Max. Support Storage | 32G (MicroSD) |
| Poder | Dues piles AA |
| Temps de Vida | Unes 5 h |
| Dimensions | 195 mm * 30 mm * 65 mm |
| Pes | RX 87g, TX 86g |
9. Garantia i Suport
The BOYA BY-WFM12 comes with a One Year BOYA warranty. For support or warranty claims, please refer to the contact information provided in your product packaging or visit the official BOYA weblloc.





