Fosmon 51004HOM
Fosmon WaveLink Wireless Door Chime Instruction Manual
Model: 51004HOM
Product Overview
The Fosmon WaveLink Wireless Door Chime system provides a reliable and convenient way to monitor entry points in your home or business. This system includes a plug-in receiver and a magnetic door/window sensor. It offers a generous wireless range, multiple chime options, and adjustable volume levels, including a visual LED indicator for the hearing impaired. The system is designed for easy installation and can be expanded with additional sensors or receivers to suit your specific needs.

Figure 1: The Fosmon WaveLink Wireless Door Chime system, showing the receiver and the magnetic door sensor.
Video 1: An overview of the Fosmon WaveLink Door Chime Wireless Door Alarm Sensor, demonstrating its components and basic functionality.
Package Contents
Verify that all items are included in your package:
- 1x Plug-in Sensor Receiver
- 1x Doorbell Alert Sensor (Transmitter)
- 1x Sensor Battery (AA)
- 1x User Manual
- Mounting Hardware (double-sided tape, screws, anchors)

Figure 2: All components included in the Fosmon WaveLink Wireless Door Chime package.
Component Identification
Familiarize yourself with the different parts of your WaveLink system:

Figure 3: Labeled diagram of the receiver and transmitter, highlighting the LED lights, volume control, chime selection, power plug, and speaker.
- Receiver: The plug-in unit that produces the chime sound and features LED indicators. It has buttons for volume control and chime selection.
- Transmitter (Door Sensor): The battery-powered unit consisting of two magnetic parts. When separated, it sends a signal to the receiver.
Setup and Installation
Your WaveLink system is designed for easy, wire-free installation. The sensor and receiver are typically pre-paired out of the box. If you need to re-pair, change the tune, or add additional sensors/receivers, follow the steps below.
1. Choosing a Chime and Adjusting Volume
- Plug the receiver into any standard electrical outlet.
- Press the Up Tune or Down Tune button on the receiver to cycle through the 58 available chimes.
- Press the Volume button on the receiver to cycle through the 5 volume levels, including a mute mode.
2. Pairing the Sensor (if needed)
If your sensor is not paired or you are adding a new one:
- On the receiver, press and hold the Volume and Down Tune buttons simultaneously until the receiver beeps and the blue LED light flashes. This indicates it is in pairing mode.
- Within 5 seconds of the receiver entering pairing mode, trigger the transmitter by separating its two magnetic parts.
- The receiver will sound the selected chime, indicating successful pairing. If it does not pair, ensure the transmitter is triggered within the 5-second window and try again.
Video 2: Detailed setup instructions for the Fosmon WaveLink Wireless Doorbell, including pairing procedures for both motion and door sensors.
3. Mounting the Sensor
The sensor can be mounted using the included double-sided tape or screws.
- Choose a clean, dry surface on your door or window frame.
- Attach the larger part of the sensor to the door/window frame and the smaller magnetic part to the door/window itself.
- Ensure the two parts are aligned and the gap between them is less than 14mm when the door/window is closed.

Figure 4: The sensor can be easily installed using the provided double-sided tape.
The system offers a wireless range of up to 500 feet (152 meters), allowing flexible placement of the receiver.

Figure 5: The WaveLink system is completely wireless and expandable, allowing you to add more receivers and transmitters.
Operation
Once installed and paired, the Fosmon WaveLink system operates automatically.
- Door/Window Monitoring: When the magnetic sensor parts separate (e.g., a door or window opens), the transmitter sends a signal to the receiver.
- Chime Alert: The receiver will then play the selected chime and its LED indicator will flash, alerting you to the entry.
- Volume Control: Adjust the volume as needed using the dedicated button on the receiver. There are 5 levels, including a silent (mute) mode.
- LED Indicators: The built-in LED indicator provides a visual alert, which is particularly beneficial for the hearing impaired.

Figure 6: The system can be used in various locations, such as homes, businesses, or offices, to monitor different entry points.

Figure 7: The receiver offers 58 unique chimes and 5 adjustable volume levels to suit your preference.
Maintenance
To ensure optimal performance and longevity of your Fosmon WaveLink system:
- Cleaning: Wipe the receiver and sensor with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: The transmitter uses 1 AA battery. Replace the battery when the sensor's LED indicator no longer flashes or the signal becomes unreliable.
- Environmental Conditions: While the sensor is weather-resistant (IP44), avoid prolonged exposure to extreme conditions.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Receiver does not chime when sensor is triggered. | Sensor and receiver are not paired. Sensor battery is low or dead. Receiver is unplugged or power outage. Sensor parts are too far apart. | Re-pair the sensor and receiver (see Setup section). Replace the AA battery in the sensor. Ensure receiver is plugged in and power is on. Adjust sensor placement so gap is less than 14mm. |
| Chime volume is too low or too high. | Volume setting needs adjustment. | Press the Volume button on the receiver to cycle through the 5 volume levels. |
| Cannot change chime tune. | Incorrect button pressed. | Press the Up Tune or Down Tune button to select a new chime. |
| Need to reset all settings. | User preference. | Press and hold the Down Tune button for 5 seconds to reset all settings. |
Specifications
- Model: 51004HOM
- Wireless Range: Up to 500 feet (152 meters)
- Chime Selections: 58 unique tunes
- Volume Levels: 5 (including mute)
- Power Source (Receiver): Corded Electric (Plug-in)
- Power Source (Transmitter): 1 AA Battery (included)
- Dimensions (Product): 3.17 x 3.19 x 1.12 inches
- Weight (Item): 7 ounces
- Noise Level: 58 dB
- Special Features: LED Indicators, Weather Resistant (IP44 for sensor)

Figure 8: Detailed dimensions of the Fosmon WaveLink receiver.

Figure 9: The sensor is IP44 weather resistant, suitable for various temperatures.
Warranty and Support
Fosmon stands by the quality of its products. The Fosmon WaveLink wireless door chime and its components come with a Limited Lifetime Warranty.
For technical support, warranty claims, or any inquiries, please contact Fosmon customer service. Refer to the official Fosmon website or the product packaging for the most current contact information.
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