Introduction
The Mengshen Anti-Theft Door Window Alarm is a wireless security device designed to enhance the safety of your home. Featuring a powerful 105 dB siren, it effectively deters intruders and alerts occupants. The system includes a main alarm unit and a remote control for convenient operation. Its compact and innovative design ensures comprehensive security for various entry points like doors and windows.

Image: The Mengshen Anti-Theft Door Window Alarm system, showing the main alarm unit, the magnetic sensor strip, and the remote control.
Setup
Battery Installation
The main alarm unit requires two AAA batteries. To install, slide open the battery compartment cover on the back of the alarm unit. Insert the batteries, ensuring correct polarity. Close the cover securely. The remote control uses a 12V battery, typically pre-installed.

Image: The main alarm unit with its battery compartment open, showing the slots for two AAA batteries.
Pairing Additional Remote Controls
If you need to add more remote controllers, follow these steps:
- Remove the batteries from the main alarm unit.
- Press and hold the 'Study' button on the alarm unit.
- While holding the 'Study' button, re-install the batteries into the alarm. You will hear a beep, indicating the alarm is in study mode.
- Press any one of the other three buttons on the new remote controller. The alarm will beep twice, confirming successful pairing.
Video: Demonstration of how to install batteries and pair an extra remote control with the Mengshen door alarm unit.
Operating Instructions
Arming and Disarming
To arm the alarm: In standby state, press the "Unlock" button on the remote controller once. The alarm will beep three times and enter the protection state, indicated by the LED flashing once every three seconds.
To disarm the alarm: In the armed state, press the "Lock" button on the remote controller once. The alarm will emit a long beep and exit the armed state. In this disarmed state, the alarm will not function unless there is a low battery indication.
Video: Overview of the Mengshen Wireless Door Alarm, demonstrating its arming and disarming functions with the remote control.
Triggering an Alarm
When the alarm is in the armed state, it will trigger a 30-second siren if the door or window it is protecting is opened. If the door or window remains open, the alarm will sound again after 15 seconds for another 30 seconds, continuing until the entry point is closed or the alarm is stopped. To stop an active alarm, press the "withdraw" button on the remote control.

Image: The Mengshen alarm unit installed on a door frame, with the remote control in hand, illustrating its active state.
Video: A brief demonstration of the Mengshen Door Alarm's operation, showing how it triggers when the magnetic contact is broken.
Emergency Function
In case of an intrusion or any other emergency, you can manually trigger the alarm by pressing the "Emergency" button on the remote control. This function is active and can be used regardless of the alarm's current arming state.
Doorbell Function
When the alarm is in standby (disarmed) state, pressing the "Doorbell" button on the remote control will cause the receiver to emit a "Ding Dong" sound twice. This feature can be used to alert people inside to open the door.

Image: The Mengshen alarm unit and its magnetic sensor strip installed on a window frame, demonstrating typical placement.
Maintenance
The Mengshen Door Window Alarm is designed for long-lasting use, with batteries typically lasting at least one year. The alarm unit features a low battery indication to alert you when the batteries need replacement. Replace the two AAA batteries in the main unit as needed to ensure continuous operation. Keep the unit clean and free from dust. Avoid exposing the unit to extreme temperatures or moisture beyond its specified operating conditions.
Troubleshooting
- Alarm not sounding: Check if the alarm is properly armed. Ensure the magnetic sensor strip is correctly aligned with the main unit when the door/window is closed. Verify that the batteries are not depleted and are installed with correct polarity.
- Remote control not working: Ensure the remote control's 12V battery is not depleted. Re-pair the remote control with the alarm unit following the 'Pairing Additional Remote Controls' instructions in the Setup section.
- False alarms: Ensure the alarm unit and magnetic strip are securely mounted and not subject to movement or vibration. Check for proper alignment of the two parts when the door/window is closed.
Specifications
| Feature | Detail |
|---|---|
| Brand | Mengshen |
| Model Number | MS-M64 |
| Control Method | Remote |
| Noise Level | 105 dB |
| Main Unit Batteries | 2 x AAA (not included) |
| Remote Control Battery | 1 x 12V (not included) |
| Item Weight | 2.82 ounces |
| Product Dimensions | 3.39 x 1.57 x 0.59 inches |
| Working Temperature | -10℃ to 60℃ (14℉ to 140℉) |
| Storage Temperature | -20℃ to 70℃ (-4℉ to 158℉) |
| Working Moisture | Less than 80% |
| Country of Origin | China |
Warranty
Specific warranty information for the Mengshen Anti-Theft Door Window Alarm is not provided in the available product data. Please refer to the product packaging or contact Mengshen customer support for warranty details.
Support
For additional support, product inquiries, or to purchase accessories like extra remote controls (search for "Mengshen Remote Control AR01"), please visit the official Mengshen store: