Coolqiya U1-FR-1T1
Coolqiya Mini Wireless Doorbell Instruction Manual
Model: U1-FR-1T1
Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Coolqiya Mini Wireless Doorbell. This system includes one waterproof push button transmitter and two USB plug-in receivers, designed for convenience and reliability.
Key Features
- Compact USB Chime Design: Small and portable USB plug-in receiver that does not block other sockets, saving space.
- Extended Wireless Range: Operates up to 650 feet (198 meters) in open air, with strong signal penetration through most materials like glass, metal, and wood.
- Multiple Ringtones & Volume Levels: Features 11 selectable ringtones and 5 adjustable volume levels (0-110dB). The system retains your last melody and volume setting even after a power outage.
- IP55 Waterproof Transmitter: The push button transmitter is water-resistant, suitable for outdoor use.
- Flexible Power Options: USB powered chime can be connected to a USB adapter, PC, or power bank; no batteries required for the chime.
- Easy Installation: Transmitter can be mounted using either sticky pads or screws and anchors.
- Smart Memory Function: Remembers your selected melody and volume level.
- Expandable System: Capable of expanding with up to 25 additional receivers and transmitters.

Image: Overview of Coolqiya Wireless USB Doorbell features.
Package Contents
- 1 x Wireless Doorbell Transmitter (Push Button)
- 2 x USB Plug-in Receivers (Chimes)
- 1 x 12V Battery (for Transmitter, pre-installed or included separately)
- Mounting Hardware (Sticky Pad, Screws, Anchors)
- User Manual (This document)

Image: Contents of the Coolqiya Mini Wireless Doorbell package.
Setup and Installation
Before Installation:
Before mounting the transmitter, ensure to take the transmitter bracket apart and remove any insulating film from the battery compartment to activate the battery.
Receiver Setup:
Plug the USB receiver into any standard USB socket, USB adapter, PC, or power bank. The chime will power on automatically.

Image: Different ways to power the USB chime receiver.
Transmitter Installation:
There are two primary methods for installing the transmitter:
- Double-sided Tape: Clean the desired mounting surface thoroughly. Peel off the protective film from one side of the double-sided tape and apply it to the back of the transmitter. Peel off the other side and firmly press the transmitter onto the wall or door frame for at least 30 seconds.
- Screws & Anchors: For a more secure installation, use the provided screws and anchors. Mark the desired drilling spots, drill pilot holes, insert anchors, and then screw the transmitter into place.

Image: Detailed dimensions and installation methods for the doorbell components.
Pairing and Ringtone Settings:
The USB Chime works in EASY Mode by default, meaning all transmitters from Coolqiya can activate the chime without any special setting, and the ringtone is the same for all transmitters.
To customize ringtones or pair additional transmitters, use CUSTOM Mode:
- Choose Ringtone: Press the Music Button on the USB Chime to cycle through the 11 available ringtones until you find your favorite.
- Enter Pairing Mode: Press and hold the Volume Button on the receiver for approximately 5 seconds. The receiver will blink and emit a "ding" sound, indicating it's in pairing mode.
- Pair Transmitter: Within 5 seconds of entering pairing mode, push the transmitter button. You will hear the music you set, confirming successful pairing.
- Pair Multiple Transmitters (Optional): Repeat steps 1-3 for each additional transmitter you wish to pair. In CUSTOM mode, you can set a different ringtone for each transmitter, allowing you to distinguish which door is being activated.

Image: Step-by-step guide for setting ringtones and pairing transmitters.
Video: Demonstrates the pairing process and setting ringtones for the Coolqiya Wireless Doorbell.
Operating Instructions
Adjusting Volume:
The receiver has 5 adjustable volume levels, ranging from 0dB (mute) to 110dB. To adjust the volume, press the Volume Button on the side of the receiver. Each press will cycle through the available volume levels.

Image: Visual representation of the doorbell's volume levels.
Changing Ringtones:
As described in the "Pairing and Ringtone Settings" section, press the Music Button on the receiver to select from the 11 available ringtones. The selected ringtone will be saved even if the power is disconnected.
Wireless Range:
The doorbell system offers a wireless range of up to 650 feet (198 meters) in open air. Obstacles such as walls and doors may reduce this range to approximately 300 feet.

Image: Illustration of the doorbell's wireless range within a typical home environment.
Maintenance
Cleaning:
Wipe the doorbell components with a soft, dry cloth. Do not use abrasive cleaners or solvents.
Transmitter Battery Replacement:
The transmitter is powered by a 12V battery. When the transmitter's performance degrades or it stops working, it may be time to replace the battery. Use a small screwdriver to carefully open the transmitter casing and replace the old battery with a new 12V battery, ensuring correct polarity.

Image: Illustration showing how to open the transmitter and replace its battery.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Doorbell does not ring. |
|
|
| Doorbell rings unexpectedly. |
|
|
| Sound is too low or too loud. | Volume level needs adjustment. | Press the Volume Button on the receiver to cycle through the 5 volume levels until desired loudness is achieved. |
Specifications
- Model Number: U1-FR-1T1
- Manufacturer: fuyinxing
- Item Weight: 2.89 ounces
- Product Dimensions: 3.38 x 2.87 x 0.7 inches
- Power Source (Transmitter): 1 x 12V Alkaline Battery (included)
- Power Source (Receiver): USB Powered (no batteries required)
- Color: White
- Wireless Range: Up to 650FT (open air), approx. 300FT (with walls/doors)
- Ringtones: 11 selectable melodies
- Volume Levels: 5 levels (0-110dB)
- Waterproof Rating (Transmitter): IP55
- Working Temperature: 5°F to 131°F ( -15°C to 55°C)

Image: The IP55 waterproof rating of the transmitter, suitable for outdoor use.
Warranty and Support
Coolqiya is committed to providing high-quality products and ensuring customer satisfaction. For any questions, concerns, or support needs regarding your Mini Wireless Doorbell, please feel free to contact our customer service. We strive to respond within 24 hours to assist you sincerely.
Please refer to your purchase documentation for specific warranty details.
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