1. Introduction
Thank you for choosing the SECRUI Wireless Doorbell. This manual provides detailed instructions to ensure proper installation, operation, and maintenance of your device. Please read this manual thoroughly before use and retain it for future reference.
2. Package Contents
Verify that all items listed below are included in your package:
- 1 × Transmitter (Doorbell Button) with pre-installed battery
- 1 × Plug-in Receiver
- 1 × Adhesive Tape for mounting
- 1 × Screw for mounting
- 1 × Anchor for mounting
- 1 × User Manual (this document)

Figure 2.1: Included Components
3. Product Features
- Modern Design: Sleek white aesthetic that complements various home decors.
- Easy Installation: No complex wiring required, offering quick setup.
- Extended Range: Up to 1000 feet (300 meters) wireless transmission range.
- Customizable Alerts: 32 selectable melodies and 5 adjustable volume levels (including mute mode).
- Weather Resistant: IP55 waterproof rating for outdoor durability.
- Expandable System: Supports connection of up to 20 accessories (additional transmitters or receivers).

Figure 3.1: SECRUI Wireless Doorbell Kit
4. Setup and Installation
4.1. Receiver Installation
- Plug the receiver into a standard electrical outlet in your desired location. Ensure the outlet is easily accessible and within the wireless range of the transmitter.
- Upon plugging in, the receiver will light up and beep twice, indicating it is powered on and ready for pairing.

Figure 4.1: Plug-in Receiver

Figure 4.2: Compact Receiver Design
4.2. Transmitter (Doorbell Button) Installation
Choose a suitable location for your doorbell button, typically near your front door. Ensure the surface is clean and dry before installation.

Figure 4.3: Installation Methods
Method 1: Adhesive Mounting
- Clean the mounting surface thoroughly with a degreasing agent or alcohol wipe to ensure optimal adhesion. Allow the surface to dry completely.
- Peel off one side of the provided adhesive tape and firmly attach it to the back of the doorbell button.
- Peel off the other side of the adhesive tape and press the doorbell button firmly onto the desired clean surface for at least 30 seconds.
Method 2: Screw Mounting
- Carefully open the back cover of the doorbell button.
- Mark the positions for drilling holes using the back cover as a template.
- Drill two holes at the marked positions. Insert the provided anchors into the holes.
- Secure the back cover to the wall using the provided screws.
- Attach the doorbell button to its secured back cover.
The transmitter is designed to be weather-resistant (IP55 rated), suitable for outdoor use in various conditions.

Figure 4.4: Weather Resistant Transmitter
5. Operating Instructions
5.1. Volume Adjustment
The receiver features volume control buttons on its side. Press the volume up/down buttons to cycle through 5 different volume levels, including a mute mode. Select the desired volume for your environment.
5.2. Ringtone Selection
The receiver offers 32 distinct melodies. Use the melody selection buttons on the side of the receiver to preview and choose your preferred ringtone. The receiver has a memory function to retain your last selected melody and volume level even after a power outage.

Figure 5.1: Receiver Controls
5.3. Pairing Additional Transmitters/Receivers
The system supports connecting up to 20 accessories (additional doorbell buttons or receivers). To pair a new accessory:
- Plug in the receiver.
- Press and hold the volume button on the receiver for approximately 5 seconds until the LED indicator flashes rapidly. This puts the receiver into pairing mode.
- Immediately press the button on the new transmitter. The receiver will chime, indicating successful pairing.
- Test the new transmitter to ensure it triggers the receiver.
You can assign different ringtones to different transmitters to distinguish which door is being rung.
6. Maintenance
6.1. Cleaning
Wipe the doorbell button and receiver with a soft, dry cloth. Do not use abrasive cleaners or solvents. The doorbell button is IP55 rated, meaning it is protected against dust and water splashes, but should not be submerged in water.
6.2. Battery Replacement (Transmitter)
The transmitter uses an Alkaline battery (CR2032, typically). If the doorbell button stops working or the LED indicator does not light up when pressed, the battery may need replacement. To replace:
- Carefully open the back cover of the transmitter.
- Remove the old battery and insert a new CR2032 Alkaline battery, ensuring correct polarity (+/-).
- Close the back cover securely.

Figure 6.1: Transmitter Battery Access
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Doorbell does not ring. | Receiver unplugged or no power. Transmitter battery low/dead. Not paired correctly. Out of range. | Ensure receiver is plugged into a live outlet. Replace transmitter battery. Re-pair transmitter and receiver (refer to Section 5.3). Move receiver closer to transmitter. |
| Short wireless range. | Obstructions (thick walls, metal structures). Interference from other wireless devices. | Relocate receiver or transmitter to minimize obstructions. Move away from other wireless devices (e.g., Wi-Fi routers, microwaves). |
| Volume too low/high. | Volume setting needs adjustment. | Adjust volume using the buttons on the receiver (refer to Section 5.1). |
8. Specifications
- Brand: SECRUI
- Model Number: M5373+F152
- Wireless Range: Up to 1000ft (300m) in open air
- Ringtones: 32 selectable melodies
- Volume Levels: 5 levels (0-120dB), including mute
- Waterproof Rating (Transmitter): IP55
- Operating Temperature: -4°F to 140°F (-20°C to 60°C)
- Power Source (Receiver): AC 110-240V (Plug-in)
- Power Source (Transmitter): 1 x CR2032 Alkaline Battery (included)
- Product Dimensions (approx.): 4 x 2 x 2 inches (Receiver), 2.56 x 1.30 x 0.59 inches (Transmitter)
- Item Weight (approx.): 4.2 ounces
9. Warranty and Support
For warranty information, technical support, or any inquiries regarding your SECRUI Wireless Doorbell, please refer to the manufacturer's official website or contact their customer service directly. Contact details are typically found on the product packaging or the manufacturer's website.





