1. Introduction
The KERUI M7 Split Welcome Alarm utilizes advanced wireless transceiver technology, a robust microcomputer control system, and a power-saving design. It features high-quality voice processing and integrates 32 selectable songs. This device offers stable and reliable performance, with receivers and transmitters that operate on a wireless code. It combines the functions of a welcome chime, burglar alarm, doorbell, and night light, making it suitable for various environments such as homes, offices, stores, and factories.
Key Features:
- 32 selectable songs.
- Integrated functions: welcome chime, burglar alarm, doorbell, and night light.
- Supports up to 30 accessories (detectors and remote controls).
- Compatible with EV1527/PT2262 code accessories.
- 4 adjustable volume levels.
- Power-saving design.
2. Setup
2.1. Battery Installation
Both the receiver and the PIR motion sensor require batteries for operation. The receiver can also be powered via a 5V power source (e.g., USB adapter).
- Receiver: Open the battery compartment on the back of the receiver. Insert 3 AAA batteries, ensuring correct polarity. Close the compartment.
- PIR Motion Sensor: Open the battery compartment on the back of the sensor. Insert 3 AAA batteries, ensuring correct polarity. Close the compartment.
2.2. Mounting
The receiver and PIR motion sensor can be mounted on a wall or placed on a flat surface using their integrated stands or mounting holes.
- Receiver: Use the hanging hole on the back to mount it on a screw, or place it on its stand.
- PIR Motion Sensor: The sensor comes with an adjustable mount. Attach the mount to a wall or ceiling using screws, then secure the sensor to the mount. Adjust the angle for optimal detection coverage.
2.3. Adding Detectors and Remote Controls
The system supports up to 30 detectors and remote controls.
- Add Detectors:
a. After booting the receiver, press the [♫] button and [M] button simultaneously. The LED light will illuminate, indicating it has entered the adding detectors status.
b. Trigger a detector (e.g., wave hand in front of the PIR sensor) to send a signal to the receiver. The receiver's LED light will twinkle once, confirming the detector has been added.
c. You can trigger other detectors to add more. If the LED light twinkles three times, it means the maximum number of detectors has been added.
d. Press the [M] button to exit, or it will automatically exit after 20 seconds of inactivity. - Delete Detectors:
a. After booting the receiver, press the [♫] button and [M] button simultaneously. The LED light will illuminate.
b. Long press the [M] button until the LED goes off. All previously added detectors will be deleted, and the receiver will exit the status automatically. - Add Remote Controls:
a. After booting the receiver, press the [M] button and [♫] button simultaneously. The LED light will illuminate, indicating it has entered the adding detectors status.
b. Press any button on the remote control to send a signal to the receiver. The receiver's LED light will twinkle once, confirming the remote control has been added.
c. You can trigger other remote controls to add more. If the LED light twinkles three times, it means the maximum number of remote controls has been added.
d. Press the [M] button to exit, or it will automatically exit after 20 seconds of inactivity. - Delete Remote Controls:
a. After booting the receiver, press the [M] button and [♫] button simultaneously. The LED light will illuminate.
b. Long press the [M] button until the LED goes off. All previously added remote controls will be deleted, and the receiver will exit the status automatically.
3. Operating Instructions
The KERUI M7 offers four distinct operating modes and customizable settings.
3.1. Power On/Off
- To Turn On/Off: Long press the [M] button for 5 seconds.
3.2. Mode Selection
The receiver has 4 operating modes: Welcome Mode, Alarm Mode, Doorbell Mode, and Night Light Mode. You can switch between these modes in two ways:
- Using the [M] button on the receiver: After booting, press the [M] button to cycle through the modes.
- Using corresponding buttons on the remote control (if paired).
| Mode | Playing | Description |
|---|---|---|
| Welcome Mode | "Hello welcome" | Plays a welcoming message when motion is detected. Ideal for entrances. |
| Alarm Mode | Alert like "Wu-wu-wu" | Emits a loud alarm sound when motion is detected. Suitable for security. |
| Doorbell Mode | One of 32 songs | Plays a selected doorbell chime when motion is detected. |
| Night Light Mode | LED light up 2 seconds | The LED light illuminates for 2 seconds upon motion detection, without sound. |
3.3. Song Selection
- Press the [♫] button to select a piece of music. There are 32 music loops to choose from.
3.4. Volume Adjustment
- Press the [ill] button to adjust the volume level. There are 4 adjustable volume levels.
3.5. Night Light Function
The night light function can be used in two ways:
- Long press the [M] button for 3 seconds. The LED will light up for 2 minutes.
- Set the receiver mode to "Night Light Mode". When a detector is triggered, the LED light will illuminate for 2 seconds. You can press any key to turn off the light manually.
4. Maintenance
4.1. Battery Replacement
When the red LED light near the USB port on the receiver lights up and stays on, it indicates the battery is charging. If it lights off, it's fully charged or not connected to power. For the PIR motion sensor, if the red LED indicator flashes, it indicates low battery and replacement is needed.
Always use high-quality alkaline or rechargeable AAA batteries for optimal performance and longevity.
4.2. Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
4.3. Reset Procedure
To reset the receiver and remove all paired detectors and remote controls:
- Unplug the power source (if applicable) and remove the batteries.
- Press and hold the [M] button.
- While holding the [M] button, reinsert the batteries or plug in the power.
- Release the button when the LED flashes 10 times. The receiver will now be in Welcome Mode, and all previous pairings will be cleared.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low or dead batteries; incorrect battery installation. | Replace batteries, ensuring correct polarity. Check if 5V power source is connected properly. |
| Motion sensor does not detect. | Incorrect sensor placement; low battery in sensor; sensor not paired. | Ensure sensor is placed in an optimal detection area. Replace sensor batteries. Re-pair the sensor with the receiver. |
| No sound or light signal. | Incorrect mode selected; volume too low; receiver not paired with sensor. | Check the selected mode. Adjust volume. Re-pair the sensor/remote with the receiver. |
| Sound is too loud or causes vibration. | Volume set too high. | Adjust the volume level using the [ill] button. Consider placing the receiver on a stable surface or mounting it securely to reduce vibration. |
| Cannot pair new detectors/remotes. | Incorrect pairing procedure; maximum devices reached. | Follow the pairing instructions carefully. Ensure you are in the correct adding status. If 30 devices are already paired, you may need to delete some. |
| Want light signal only, no sound. | Sound is active in other modes. | Switch the receiver to "Night Light Mode". In this mode, only the LED light will activate upon detection. |
6. Specifications
| Parameter | Value |
|---|---|
| Working Current | <1mA |
| Working Temperature | -10°C to 50°C |
| Receiving Frequency | 433MHz |
| Receiving Distance | Up to 150 meters (in open area) |
| Power Source (Receiver) | 3 x AAA batteries or 5V USB power source |
| Power Source (Sensor) | 3 x AAA batteries |
| Number of Songs | 32 |
| Max. Accessories Supported | 30 (detectors and remote controls) |
7. User Tips
- For optimal performance, always use high-quality alkaline or rechargeable batteries.
- Avoid installing the product in locations exposed to direct sunlight or rain, as this can affect performance and longevity.
- Experiment with sensor placement to find the best detection range for your specific needs. Some users find the motion sensor range to be very good.
- If the device vibrates excessively at high volumes, try reducing the volume or ensuring it is securely mounted.
- The night light mode is excellent for discreet alerts without sound, useful in quiet environments or at night.
8. Warranty and Support
For any issues, questions, or support needs regarding your KERUI M7 Welcome Motion Sensor Alarm, please contact the seller or manufacturer directly. Non-professionals should not attempt to repair the device.
Please refer to the official product page or packaging for specific warranty terms and contact information.