SURFOU N128

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SURFOU Wireless Doorbell System User Manual

Model: N128

Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your SURFOU Wireless Doorbell System, Model N128. This system is designed for ease of use and reliable performance, featuring a waterproof transmitter, multiple chime options, and adjustable volume levels.

Setup and Installation

Follow these steps to set up your SURFOU Wireless Doorbell System.

Package Contents

Before installation, ensure all components are present:

  • Wireless Doorbell Transmitter (Button)
  • Wireless Doorbell Receiver(s)
  • User Manual
  • Mounting Hardware (screws, anchors, adhesive tape)
  • Battery for Transmitter
SURFOU Wireless Doorbell components including transmitter, receiver, user manual, battery, and mounting hardware.

Figure 1: Components of the SURFOU Wireless Doorbell System. This image displays the doorbell transmitter, receiver, user manual, battery, and various mounting accessories.

Transmitter Installation (Doorbell Button)

  1. Choose a Location: Select a flat, vertical surface near your door. Ensure the location is easily accessible for visitors.
  2. Prepare the Transmitter: Open the transmitter casing to insert the provided battery.
  3. Mounting Options:
    • Adhesive Tape: For smooth surfaces, peel off the protective film from the double-sided adhesive tape and firmly press the transmitter onto the desired location for 30 seconds.
    • Screws: For uneven or rough surfaces, mark the screw holes using the transmitter as a template. Drill pilot holes, insert wall anchors if necessary, and secure the transmitter with the provided screws.
  4. Weather Protection: The transmitter is designed to be waterproof and dustproof, suitable for outdoor use.
SURFOU Wireless Doorbell transmitter mounted on an exterior wall, showing its dustproof and waterproof features and operating temperature range.

Figure 2: The doorbell transmitter is designed for outdoor use, featuring dustproof and waterproof capabilities, and operates effectively in temperatures ranging from -22°F to 158°F (-30°C to 70°C).

Receiver Installation (Chime Unit)

  1. Plug In: Simply plug the receiver into any standard electrical outlet within your home.
  2. Placement: Place receivers in locations where the chime can be easily heard throughout your desired area. The system offers a wireless range of up to 1300 feet in open environments.
Diagram showing a house with multiple SURFOU doorbell receivers placed inside, illustrating the 1300ft wireless range and signal penetration.

Figure 3: Illustration of the doorbell's wireless range, demonstrating its ability to transmit signals up to 1300 feet and penetrate walls for effective coverage throughout a home. The transmitter battery has a lifespan of 1-3 years.

Operating Instructions

Your SURFOU Wireless Doorbell System is designed for simple operation.

Changing Chimes

  1. Locate the "Melody Selection" button on the receiver.
  2. Press the button repeatedly to cycle through the 55 available melodies.
  3. Once you hear your desired melody, stop pressing. The receiver will automatically save your selection.

Adjusting Volume

  1. Locate the "Volume Control" button on the receiver.
  2. Press the button to cycle through the 5 adjustable volume levels, ranging from 0dB (silent mode) to 110dB.
  3. The receiver will retain your last set volume level even after a power failure.
SURFOU Wireless Doorbell receiver displaying icons for 55 melodies, 5 volume levels, 2 working modes, and a silent mode option.

Figure 4: The receiver offers 55 distinct melodies, 5 adjustable volume levels, including a silent mode (0-110dB), and two working modes.

LED Flash Indicator

In addition to the audible chime, the receiver features an LED light indicator that flashes when the doorbell is pressed. This visual alert is particularly helpful for individuals with hearing impairments or when the receiver is in silent mode.

Image showing a sleeping person with a SURFOU doorbell receiver nearby, highlighting the LED flash and mute mode features for quiet notification.

Figure 5: The LED flash indicator provides a visual alert, and the mute mode allows for silent notification, ideal for quiet environments or for users who prefer visual cues.

Maintenance

Proper maintenance ensures the longevity and optimal performance of your doorbell system.

  • Cleaning: Wipe the transmitter and receiver with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
  • Battery Replacement: The transmitter battery typically lasts 1-3 years. Replace the battery when the doorbell button's LED indicator no longer lights up or the signal becomes weak. Use an Alkaline battery of the specified type (e.g., 23A 12V).
  • Environmental Conditions: While the transmitter is waterproof and dustproof, avoid submerging it in water or exposing it to extreme physical impact.

Troubleshooting

If you encounter issues with your SURFOU Wireless Doorbell, refer to the following common problems and solutions:

ProblemPossible CauseSolution
Receiver does not chime.
  • Receiver unplugged or no power.
  • Volume set to 0 (silent mode).
  • Transmitter battery is dead.
  • Out of range or signal interference.
  • Ensure receiver is securely plugged into a working outlet.
  • Increase the volume level using the volume button.
  • Replace the transmitter battery.
  • Relocate the receiver closer to the transmitter or away from large metal objects/electronics. The system has a 1300ft range in open areas.
Chime sounds intermittently or weakly.
  • Low transmitter battery.
  • Signal interference.
  • Distance too great.
  • Replace the transmitter battery.
  • Move the receiver or transmitter to avoid interference.
  • Ensure the distance between transmitter and receiver is within the specified 1300ft range.
Transmitter LED does not light up when pressed.
  • Transmitter battery is dead or incorrectly installed.
  • Replace the transmitter battery, ensuring correct polarity.

Product Specifications

Model NumberN128
Wireless RangeUp to 1300 feet (in open environment)
Chime Options55 melodies
Volume Levels5 levels (0dB to 110dB)
Transmitter Power SourceAlkaline Battery (e.g., 23A 12V)
Receiver Power SourceAC 110-240V (Plug-in)
Operating Temperature-22°F to 158°F (-30°C to 70°C)
Waterproof RatingIP44 (Transmitter)
Dimensions (Transmitter)Approx. 7cm (height) x 3.5cm (width)
Dimensions (Receiver)Approx. 7cm (width) x 8.6cm (height)
Item Weight9.9 ounces (total package)

Warranty and Support

SURFOU products are designed for reliability and performance. For specific warranty details, please refer to the warranty card included with your product or visit the official SURFOU website.

If you require technical assistance or have questions regarding your doorbell system, please contact SURFOU customer support.

  • Email: support-service@surfou.com
  • Website: Refer to the official SURFOU brand store on Amazon or the product packaging for the most current support information.

© 2026 SURFOU. All rights reserved.

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