1. Product Overview
The PHYSEN Wireless Doorbell Receiver (Model CW-SNJ-B) is designed to work seamlessly with PHYSEN doorbell transmitters, providing audible and visual alerts when the doorbell is pressed. This plug-in receiver offers a wide range of customizable options to suit various environments.

Image 1: PHYSEN Wireless Doorbell Receiver, featuring a sleek black design with a blue LED indicator.
Key Features:
- Extended Range: Up to 1300 feet (400 meters) in open areas.
- Multiple Chimes: 58 distinct melodies to choose from.
- Adjustable Volume: 5 levels, ranging from 0dB (mute) to 110dB.
- LED Indicator: Visual alert for visitors, ideal for noisy environments or hearing-impaired users.
- Memory Function: Retains your last selected chime and volume level after a power outage.
- Easy Installation: Plug-and-play design for the receiver.
2. Setup and Installation
2.1 Unboxing and Components
Upon opening the package, you should find the PHYSEN Wireless Doorbell Receiver and a user manual. If you purchased a kit, it would also include one or more PHYSEN doorbell transmitters and mounting accessories (screws, anchors, double-sided adhesive tape).

Image 2: The PHYSEN Wireless Doorbell Receiver plugged into an electrical outlet, highlighting its 58 ringtones, 0-110 dB volume range, eye-catching LED indicator, and memory function.
2.2 Receiver Placement
Plug the receiver into any standard electrical outlet within range of your PHYSEN doorbell transmitter. Ensure it is not plugged into UPS units. For optimal performance, avoid placing the receiver near large metal objects or other electronic devices that may cause interference.

Image 3: The PHYSEN Wireless Doorbell Receiver plugged into a wall outlet, ready for operation.
2.3 Transmitter Installation (If applicable)
If your package includes a transmitter, install it at your desired location (e.g., beside your front door). You can choose between two installation methods:
- Screw Mounting: Use the provided screws and anchors to securely attach the transmitter to the wall.
- Adhesive Mounting: Peel off the protective film from the double-sided adhesive tape and firmly press the transmitter onto a clean, dry, and flat surface.

Image 4: A PHYSEN doorbell transmitter mounted on a door frame, demonstrating typical placement.
2.4 Pairing the Transmitter with the Receiver
The receiver and transmitter are typically pre-paired from the factory. If re-pairing is needed or if you are adding new transmitters/receivers, follow these steps:
- Plug the receiver into an electrical socket.
- Short press the 'Up' or 'Down' button on the receiver to select your desired ringtone.
- Long press the 'Volume' button for 5-7 seconds (or short press 'Volume' and 'Down' buttons together). The receiver will beep once and flash, indicating it is in pairing mode.
- Immediately trigger the transmitter button. The receiver will ring and flash, confirming successful pairing.

Image 5: Step-by-step visual guide for changing the ringtone and pairing the doorbell transmitter with the receiver.
Video 1: A demonstration of the doorbell pairing process, showing how to put the receiver into pairing mode and trigger the transmitter.
3. Operating Instructions
3.1 Changing Ringtones
To change the ringtone, short press the 'Up' or 'Down' button on the side of the receiver. Each press will cycle through the 58 available melodies. The receiver will play the selected chime.
3.2 Adjusting Volume
To adjust the volume, short press the 'Volume' button on the side of the receiver. There are 5 volume levels, including a mute mode (0dB) and a maximum volume of 110dB. Continue pressing until you reach your desired volume.

Image 6: Illustration of the 5 volume levels (0dB to 110dB) and their suitability for different environments, from quiet to loud.
3.3 LED Indicator
When the doorbell transmitter is pressed, the receiver's blue LED indicator will flash, providing a visual alert. This feature is particularly useful in loud environments or for individuals with hearing impairments.
3.4 Operating Range
The PHYSEN Wireless Doorbell system offers an operating range of up to 1300 feet (400 meters) in open, unobstructed areas. Actual range may vary depending on environmental factors such as walls, metal structures, and other electronic interference.

Image 7: Diagram illustrating the 1300ft/400m working range of the doorbell system, showing signal penetration through various wall types.
Video 2: An overview of the PHYSEN Wireless Doorbell system, highlighting its 1300ft range and 58 melodies.
4. Maintenance
The PHYSEN Wireless Doorbell Receiver requires minimal maintenance. Follow these guidelines to ensure longevity:
- Cleaning: Wipe the receiver with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Environment: Keep the receiver in a dry indoor environment. Avoid exposure to extreme temperatures or direct sunlight.
- Transmitter (if applicable): Ensure the transmitter's battery (if replaceable) is in good condition. The transmitter is IP55 waterproof, but avoid submerging it in water.
5. Troubleshooting
If you encounter issues with your PHYSEN Wireless Doorbell Receiver, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Receiver does not chime when transmitter is pressed. | Not paired; out of range; power issue; transmitter battery low (if applicable). | Re-pair the devices (refer to Section 2.4); move receiver closer to transmitter; check power outlet; replace transmitter battery. |
| Short operating range. | Obstructions (walls, metal); interference from other electronics. | Relocate receiver or transmitter to minimize obstructions; move away from other electronic devices. |
| Chime volume is too low or too high. | Volume setting needs adjustment. | Press the 'Volume' button on the receiver to adjust to the desired level (refer to Section 3.2). |
| Receiver LED flashes but no sound. | Receiver is in mute mode. | Press the 'Volume' button to increase the volume from 0dB. |
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | CW-SNJ-B |
| Brand | PHYSEN |
| Item Weight | 4.5 ounces |
| Product Dimensions | 3.7 x 3.5 x 3 inches |
| Color | Black |
| Material | ABS |
| Included Components | Wireless Doorbell Receiver |
| Power Source | Plug-in (No batteries required for receiver) |
| Wireless Range | Up to 1300ft / 400m (open area) |
| Chimes | 58 options |
| Volume Levels | 5 (0dB to 110dB) |
7. Warranty and Support
Specific warranty details for the PHYSEN Wireless Doorbell Receiver (Model CW-SNJ-B) are not provided within this instruction manual. For comprehensive warranty information, technical support, or to contact customer service, please refer to the official PHYSEN website or the contact information provided with your product packaging.
