1. Introduction
The BITIWEND Wireless Door Chime System is designed to provide reliable alerts for door and window openings. This system is ideal for homes, offices, garages, and retail stores, ensuring you never miss a visitor or an unauthorized entry. With a long wireless range, multiple chime options, and adjustable volume levels, it offers a customizable and effective monitoring solution.
Key Features:
- Extended Wireless Range: Up to 600 feet (183 meters) in open areas.
- Versatile Chime Options: 58 selectable ringtones, including various melodies and alerts.
- Adjustable Volume: 5 levels, ranging from 0dB (mute) to 110dB.
- Expandable System: Supports multiple door/window sensors and receivers.
- Memory Function: Retains last-set volume and ringtone settings after power off.

Image: The BITIWEND Wireless Door Chime System, showing the main receiver unit and three contact sensors.
2. Components
Please verify that all components are present in your package:
- 1 x Plug-in Receiver (Chime Unit)
- Door/Window Contact Sensors (Quantity may vary based on package)
- Mounting Hardware (Screws, double-sided adhesive tape)
- Small Screwdriver (for battery replacement)
- User Manual (This document)
3. Setup Instructions
Follow these steps to set up your BITIWEND Wireless Door Chime System:
- Prepare the Sensor: Pull out the plastic insulation strip from the battery compartment of each door sensor.
- Plug in the Receiver: Plug the receiver unit into a standard electrical outlet in your desired location.
- Adjust Volume & Choose Ringtone:
- Press the 'Volume' button on the receiver to cycle through 5 volume levels.
- Use the 'Up' and 'Down' buttons to select your preferred ringtone from the 58 available options.
- Pair the Sensor:
- Press and hold both the 'Volume' and 'Down' buttons on the receiver simultaneously for a few seconds until the LED indicator flashes.
- Quickly separate the two parts of the door sensor (as if a door is opening) to trigger it. The receiver will chime, indicating successful pairing.
- Install the Sensor:
- Clean the desired installation surface (door/window frame and the moving part).
- Attach the two sensor parts using the provided double-sided adhesive tape or screws. Ensure the two parts are aligned and the gap between them is no more than 0.4 inches (1 cm) when the door/window is closed.

Image: Visual guide for setting up the door chime, from sensor preparation to pairing.
Video: An official product video demonstrating the setup and basic functionality of the BITIWEND Door Chime.
4. Operating Instructions
Once set up, the BITIWEND Wireless Door Chime operates automatically. When a monitored door or window opens and the two sensor parts separate, the sensor sends a signal to the receiver, triggering the selected chime.
Adjusting Volume and Chimes:
- Volume Control: Press the 'Volume' button on the receiver to cycle through 5 distinct volume levels (0dB, 50dB, 70dB, 90dB, 110dB) to suit your environment.
- Ringtone Selection: Use the 'Up' and 'Down' buttons to browse and select from 58 different ringtones.

Image: Illustration of the 5 volume levels and the variety of 58 chime tones available.
Memory Function:
The receiver is equipped with a memory function that saves your last-set volume and ringtone preferences. This ensures that your settings are retained even if the receiver is unplugged or experiences a power outage, eliminating the need for re-configuration.

Image: A visual representation of the memory function, highlighting its benefit.
Applications:
- Home Security: Monitor entry points like front doors, back doors, and windows to detect unauthorized access.
- Child/Pet Safety: Place sensors on doors leading to dangerous areas or exits to be alerted if children or pets open them.
- Retail/Office Use: Use as a welcome chime for customers entering a store or to monitor restricted areas in an office.

Image: The system's ultra-long wireless range demonstrated across different parts of a house.
5. Maintenance
Battery Replacement (Sensor):
The door/window sensors are powered by a button cell battery. When the sensor's blue LED indicator no longer flashes upon activation, or if the chime unit fails to respond to the sensor, it's time to replace the battery.
- Separate Sensor Parts: Gently separate the two parts of the sensor.
- Open the Casing: Use the provided small screwdriver to carefully pry open the sensor casing.
- Remove Battery Panel: Take out the internal battery panel. Be careful not to touch the metal ring tube at the top or the black conduit raised on the side, as these are sensitive components.
- Replace Battery: Carefully remove the old button cell battery. Insert a new CR2032 battery, ensuring the positive (+) side is facing up.
- Secure Battery Slot: After removing the battery, gently press the metal tab of the battery slot to ensure a snug fit for the new battery and prevent loosening.
- Reassemble: Place the battery panel back into its original position, then close the sensor casing by pressing it firmly until it clicks into place.

Image: Step-by-step visual guide for replacing the sensor battery.
Video: An official product video demonstrating how to replace the battery of the sensor.
6. Troubleshooting
If you encounter issues with your BITIWEND Wireless Door Chime System, refer to the table below for common problems and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chime unit does not sound when sensor is triggered. | Sensor battery is low or dead. Sensor is out of range. Sensor and receiver are not paired. Sensor parts are not aligned correctly. | Replace sensor battery. Move receiver closer to the sensor. Re-pair the sensor and receiver (refer to Setup section). Adjust sensor alignment; ensure gap is within 0.4 inches. |
| Chime sounds intermittently or falsely. | Interference from other wireless devices. Sensor parts are too far apart or loose. Environmental factors (e.g., metal doors). | Relocate receiver or sensor away from interfering devices. Re-secure sensor parts; ensure proper alignment and gap. Note: Metal doors may reduce wireless range. |
| Receiver LED flashes but no sound. | Volume is set to 0dB (mute). | Press the 'Volume' button to increase the volume level. |
| Cannot change ringtone or volume. | Buttons are not responding. | Unplug the receiver, wait 10 seconds, then plug it back in. Try again. |
7. Specifications
| Specification | Detail |
|---|---|
| Brand | BITIWEND |
| Model Number | Door Chime |
| Power Source (Receiver) | AC Plug-in |
| Power Source (Sensor) | Battery Powered (Alkaline, CR2032) |
| Voltage | 1.5 Volts (DC) |
| Wireless Range | Up to 600 feet (approx. 183 meters) |
| Chime Tones | 58 selectable |
| Volume Levels | 5 (0dB to 110dB) |
| Noise Level (Max) | 110 dB |
| Mounting Type | Door Mount (Adhesive/Screws) |
| Sensor Technology | Contact Sensor |
| Color | Black |
| Item Weight | 6.7 ounces (approx. 190 grams) |
| Package Dimensions | 3.78 x 3.74 x 3.11 inches (approx. 9.6 x 9.5 x 7.9 cm) |
8. Warranty and Support
For product support, troubleshooting assistance beyond this manual, or warranty inquiries, please contact BITIWEND customer service directly. Refer to the product packaging or the official BITIWEND website for the most current contact information.
You may also find additional resources and FAQs on the BITIWEND store page on Amazon: BITIWEND Store



