ZERFUN D240
ZERFUN D240 Rechargeable Wireless Microphones User Manual
Model: D240
Mærke: ZERFUN
1. Introduktion
The ZERFUN D240 Rechargeable Wireless Microphones system provides high-quality audio for various applications such as home karaoke, meetings, parties, church events, and DJ performances. This system features dual rechargeable microphones with independent controls for Volume, Echo, Treble, and Bass, offering versatile sound customization. The microphones are designed with a cardioid pickup pattern, effectively isolating vocals from background noise.
2. Pakkens indhold
Kontroller venligst, at alle nedenstående varer er inkluderet i din pakke:
- ZERFUN Rechargeable Cordless Mics x 2
- Modtager x 1
- Ladekabel x 2
- Mikrofonvindskærm x 2
- Antiskid Ring x 2
- Brugervejledning x 1

Figure 2.1: ZERFUN D240 Package Contents
This image displays all components included in the ZERFUN D240 wireless microphone system. It features two wireless microphones (one grey, one red), a compact receiver with a 1/4-inch plug, two USB charging cables, two black microphone windscreens, two black antiskid rings, and the user manual.
3. Produktet er slutview
The ZERFUN D240 system consists of two handheld wireless microphones and a compact receiver. Each microphone features a durable metal mesh head, a clear LED display, and a USB-C charging port. The receiver is equipped with a 1/4-inch (6.35mm) mic plug for easy connection to compatible audio devices.

Figure 3.1: ZERFUN D240 Wireless Microphone System Components
This image showcases the primary components of the ZERFUN D240 system: two wireless microphones (one grey, one red), the compact receiver, two USB charging cables, two microphone windscreens, and two antiskid rings. The microphones have a sleek design with a digital display.
3.1 Mikrofonens funktioner
- Metal Mesh Head: Durable construction for protection and sound quality.
- Klar LED-skærm: Shows battery level and frequency information.
- USB-C opladningsport: Convenient charging.
- Kontrolelementer: Independent Volume, ECHO, Treble, and BASS controls for sound customization.

Figure 3.2: Microphone Features and Battery Information
This image details the key features of the ZERFUN microphones: a robust metal mesh head, a clear LED display for status, and a USB-C charging port. It also indicates a charging time of 3-4 hours and a working time of 7+ hours for the microphones.
3.2 Modtagerfunktioner
- 1/4 Inch (6.35mm) Mic Plug: For connecting to compatible audio devices.
- Afbryderknap: Til at tænde/slukke receiveren.
- Opladningsindikator: Viser opladningsstatus.
- Strømindikator: Viser strømstatus.
- Microphone Receiving Indicators (A.RF, B.RF): Indicate when Microphone A or B is receiving a signal.

Figure 3.3: Receiver Usage Guide
This diagram provides a visual guide to the ZERFUN receiver, labeling its key components: the 1/4-inch (6.35mm) mic plug, the power switch button, the charging indicator, the power indicator, and the A.RF and B.RF indicators for microphone signal reception.
4. Opsætningsvejledning
- Charge the Microphones and Receiver: Before first use, fully charge both microphones and the receiver using the provided charging cables. The charging indicator on the receiver will illuminate during charging and turn off when fully charged. Microphones have an LED display showing battery status.
- Tilslut modtageren: Plug the 1/4-inch (6.35mm) receiver output into the MIC input of your compatible audio device (e.g., Speaker, PA Speaker System, Power Amplifier, Karaoke Machine, Audio Interface, Audio Mixer).
NOTE: This microphone set is NOT compatible with phones, PCs, or cameras.

Figur 4.1: Bred kompatibilitet overview
This image illustrates the wide compatibility of the ZERFUN D240 system, showing it can connect to karaoke machines, powered speakers, audio interfaces, amplifiers, and mixing boards via a 1/4-inch (6.35mm) MIC input. It explicitly states that the system is not compatible with phones, computers, or tablets.
- Tænd: Turn on the receiver by pressing its power switch button. Then, turn on each microphone by pressing their respective power buttons.
- Automatisk parring: The microphones and receiver are designed for plug-and-play operation and should automatically pair. The A.RF and B.RF indicators on the receiver will light up when a microphone is connected and transmitting.
- Juster antenner: For optimal signal reception, ensure the receiver's antennas are extended and positioned appropriately.
5. Betjeningsvejledning
Once set up, you can begin using your ZERFUN D240 wireless microphones. The system operates on 2.4Ghz frequencies, compliant with FCC regulations, offering a transmission range of up to 164 feet outdoors.

Figure 5.1: Transmission Range and Frequency
This image highlights the stable and long transmission capabilities of the ZERFUN D240 wireless microphone system, indicating an outdoor range of up to 164 feet using 2.4Ghz frequencies, which are FCC compliant.
5.1 Lydkontrol
Each microphone features dedicated buttons for adjusting various sound parameters:
- VOL kontrol: Adjusts microphone volume (±15 levels).
- ECHO-kontrol: Adjusts echo effect (±15 levels).
- DISKANT-kontrol: Adjusts treble levels (±7 levels).
- BAS kontrol: Adjusts bass levels (±7 levels).

Figure 5.2: Microphone Sound Controls
This image focuses on the individual sound controls available on the ZERFUN wireless microphones, detailing the adjustable levels for Volume (VOL), Echo, Treble, and Bass, allowing users to fine-tune their audio output.
5.2 Kardioid pickup-mønster
The microphones are designed with a cardioid pickup pattern, meaning they primarily pick up sound from the front. This directional characteristic helps to isolate your voice from ambient background noise, making them ideal for singing and speaking applications where clarity is paramount.
6. Opladningsoplysninger
Both the microphones and the receiver are equipped with built-in rechargeable batteries.
- Mikrofonens arbejdstid: Approximately 8-10 hours when fully charged.
- Receiver Working Time: Approximately 4-5 hours when fully charged.
- Opladningstid: Microphones typically take 3-4 hours to fully charge.
Use the provided USB charging cables to charge the devices. Connect the cables to a standard USB power adapter (not included) or a USB port on a computer.
7. Vedligeholdelse
- Rensning: Wipe the microphones and receiver with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Opbevaring: Opbevar systemet et køligt, tørt sted væk fra direkte sollys og ekstreme temperaturer.
- Batteripleje: To prolong battery life, avoid completely draining the batteries frequently. Charge them regularly, even if not in use for extended periods.
- Forruder: Use the provided windscreens to protect the microphone capsules from dust and moisture, and to reduce plosive sounds.
8. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen lyd fra mikrofonen | Microphone or receiver is off; low battery; incorrect connection; microphone not paired. | Ensure both microphone and receiver are powered on. Charge batteries. Verify receiver is plugged into the correct MIC input. Re-pair if necessary (refer to setup). |
| Dårlig lydkvalitet/Interferens | Obstructions; too far from receiver; other 2.4Ghz devices nearby; low battery. | Reduce distance between microphone and receiver. Remove obstructions. Avoid using near other 2.4Ghz devices. Ensure batteries are charged. |
| Microphone not responding to controls | Microphone is off or frozen; low battery. | Turn the microphone off and on again. Charge the microphone. |
| Modtageren tænder ikke | Lavt batteri; defekt opladningskabel/adapter. | Charge the receiver. Try a different charging cable or USB power adapter. |
9. Specifikationer
| Feature | Detalje |
|---|---|
| Mærke | ZERFUN |
| Modelnummer | D240 |
| Forbindelsesteknologi | 2.4Ghz trådløs |
| Connector Type | 6.35 mm Jack |
| Mikrofon formfaktor | Håndholdt |
| Polar mønster | Envejs (kardioid) |
| Strømkilde | Batteridrevet (lithium-ion) |
| Mikrofonens batterilevetid | 8-10 timer |
| Modtager batterilevetid | 4-5 timer |
| Charging Time (Microphone) | 3-4 timer |
| Transmission Range | Up to 164 feet (Outdoor) |
| Særlige funktioner | ECHO, Treble, BASS, VOL Control; Rechargeable |
| Kompatible enheder | Amplifier, Audio Interface, Audio Mixer, Karaoke Machine, Speaker |
| Varens vægt | 1.52 pund |
| Produktmål (L x B x H) | 11.9 x 7.5 x 2.3 tommer |
10. Garanti og support
Genuine ZERFUN Wireless Microphone products come with supportive 24-Hours After-Sales Customer Service and a 12-Month Manufacturer Assurance.
For further assistance or inquiries, please contact ZERFUN customer support.