1. Introduction
Thank you for choosing the CACAZI Self-powered Wireless Doorbell. This manual provides detailed instructions for the installation, operation, and maintenance of your new doorbell system. Please read this manual carefully before use to ensure proper function and longevity of the product.

2. Package Contents
Your package should contain the following items:
- Wireless Doorbell Receiver (220V)
- Self-powered Doorbell Transmitter(s) (quantity varies by purchase, e.g., 1, 2, or 4 buttons)
- Mounting accessories (double-sided adhesive tapes, screws, screw sleeves)
- User Manual (this document)
3. Features
- Self-powered Transmitter: The button converts kinetic energy into electrical energy when pressed, eliminating the need for batteries.
- Wireless Range: Up to 150 meters (in open areas). Note: Actual range may vary depending on environmental factors and obstacles.
- Waterproof & Dustproof: The transmitter is designed to work normally in various weather conditions, including snow and high temperatures (IP44 rated).
- Multiple Ringtones: 60 melodies to choose from.
- Adjustable Volume: 5 levels of volume adjustment (0-110dB), including a mute function.
- Visual Alert: Eye-catching backlight flashes when the doorbell is pressed, suitable for the elderly, deaf, and pregnant women.
- Power-off Memory: Retains selected ringtone and volume settings after power loss.
- Expandable System: Super learning code allows for unlimited matching of additional receivers and transmitters.
- Universal Plug Types: Receiver available with US, EU, UK plugs, and AU adapters to suit most countries.


4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | CACAZI |
| Model Number | FA88 |
| Doorbell Type | Wireless |
| Power Source | AC (Receiver), Self-powered (Button) |
| Receiver Rated Voltage | 110-220V |
| Waterproof Grade | IP44 |
| Receiving Distance | 150M Remote (in open area) |
| Melody Options | 60 Ringtones |
| Volume Levels | 5 levels (0-110dB) |
| Transmitter Dimensions | 70 x 46 x 24 mm |
| Receiver Dimensions | 92 x 62 x 32 mm |
| Certification | CE, FCC, RoHS |
5. Setup and Installation
5.1. Receiver Installation
- Plug the receiver into a standard electrical outlet (110-220V).
- Ensure the outlet is easily accessible and not obstructed.

5.2. Transmitter Installation
The transmitter can be installed using two methods:
- Double-sided Adhesive Tape:
- Clean the desired mounting surface thoroughly to ensure it is dry and free of dust or grease.
- Apply the provided double-sided adhesive tape to the back of the transmitter.
- Firmly press the transmitter onto the wall or door frame in the desired location.
- Screw Fixing:
- Remove the back cover of the transmitter.
- Mark the positions for drilling holes on the wall using the back cover as a template.
- Drill holes and insert the screw sleeves.
- Secure the bottom case of the transmitter to the wall with the provided screws.
- Attach the transmitter body back onto the secured bottom case.

Important Note:
- The transmitter button cannot be placed on an iron door or metal surface, as this will interfere with the wireless signal.
- Ensure the transmitter is within the 150-meter range of the receiver, considering potential signal degradation due to walls and other obstacles.
6. Operating Instructions
6.1. Pairing Signals
If the receiver does not ring when the button is pressed, or if you are adding a new transmitter, you need to pair the signals:
- Plug in the receiver.
- Press and hold the volume button on the receiver for approximately 5 seconds until the light on the receiver turns on.
- Release the volume button.
- Immediately press the transmitter button. The receiver will ring, indicating successful pairing.
6.2. Modifying and Locking Music/Ringtones
To change the ringtone and lock your selection:
- Unplug the receiver from the power socket.
- Press and hold the volume button on the receiver.
- While still holding the volume button, plug the receiver back into the power socket.
- Continue holding the volume button until the light on the receiver turns on, then release the button.
- Press the music button (usually located on the side of the receiver) repeatedly to cycle through the 60 available melodies until you find your preferred ringtone.
- Once you have selected your desired melody, press and hold the volume button again until the light on the receiver turns on.
- Immediately press the transmitter button twice. The music is now successfully locked.

6.3. Adjusting Volume
To adjust the volume, simply press the volume control key on the receiver. Each press will cycle through the 5 available volume levels (0-110dB).
6.4. Product Demonstration Video
7. Maintenance
- Cleaning: Wipe the doorbell units with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Environmental Conditions: While the transmitter is waterproof, avoid prolonged exposure to extreme weather conditions or direct submersion in water.
- Signal Interference: Keep the doorbell system away from large metal objects or other electronic devices that may cause interference.
8. Troubleshooting
8.1. Doorbell Not Ringing
- Check Power: Ensure the receiver is properly plugged into a live electrical outlet.
- Pairing: If the doorbell is new or has lost connection, try pairing the signals again as described in Section 6.1.
- Distance/Obstacles: Verify that the transmitter is within the effective range of the receiver and that there are no significant metal obstructions between them.
- Transmitter Placement: Ensure the transmitter is not mounted on an iron door or large metal surface.
8.2. Signal Interference
- If you experience intermittent ringing or no signal, try relocating the receiver or transmitter to a different position.
- Ensure there are no other wireless devices operating on similar frequencies nearby that could cause interference.
8.3. Ringtones Not Changing/Locking
- Follow the steps in Section 6.2 carefully to modify and lock the music. Ensure you press the transmitter button twice immediately after the light turns on.
9. User Tips
- For optimal performance, place the receiver in a central location within your home.
- Test the doorbell's range after installation to ensure reliable operation in all desired areas.
- Consider using screw fixing for the transmitter in high-traffic areas or where adhesive might degrade over time due to weather exposure.
10. Warranty and Support
This product comes with a standard manufacturer's warranty. For specific warranty details, please refer to the product packaging or contact your retailer. If you encounter any issues that cannot be resolved using the troubleshooting guide, please contact customer support for assistance. Provide your model number (FA88) and a detailed description of the problem when seeking support.