
Mengshen Bicycle Wireless Anti-Theft Security Alarm
SPECIFICATIONS
- Brand Mengshen
- Maximum Range 15 Meters
- Noise Level 113 dB
- Wireless Remote Yes
- Item Weight 2.54 ounces
- Product Dimensions 1.57 x 0.79 x 3.74 inches
- Batteries 3 AAA batteries are required.
FEATURES
- Small Size:
Compact with innovative design, 65mm*45mm - Waterproof:
IP55 waterproof PC material casing that is suitable for use outside. - Loudest Burglar Alarm Ever:
113 dB will act as a powerful deterrent. Adaptable sensitivity with 7 levels. E-bikes, scooters, doors, and windows may all be used with designs that are not just for bicycles and motorcycles. - Simple Installation & Operation:
Using a remote control makes it simple to arm and disarm an alarm system and locate a car. Distance for remote control up to 20m. There are two installation options: double-sided sticker or straps. - Expandable:
If you require additional remote controls for a family member or simply as a backup. Just add more remote controls to your order.
How to pair the remote control with a bicycle alarm?
Please attention:
- The remote control on the left is the “original remote control”, it comes with the alarm when you receive the package. It can activate/deactivate the alarm directly.
- The remote control on the right is the remote that you buy It can’t activate/deactivate the alarm directly, so you need to pair it with the alarm before using it.
- If you have an original remote control, we can pair the second remote control with the alarm without opening the battery cover; If you have lost it, we can also complete the pair, the steps are different.
- Relevant demonstration videos have been posted on YouTube, just search “Mengshen direct” to find and watch them.

If you have the original remote control:
- Press the second key of the original remote control once,

- long press the fourth key of the original remote control, and don’t release, the bicycle alarm will go off a long sound twice. 5s later, there will be a short sound.

- At this time, release the fourth key of the original remote control, then press the second key of the unpaired remote control once, alarm will ring “Bi Bi” which means the pairing is successful.

If you don’t have the original remote control:
- Use a screwdriver and the blue tool to open the alarm,

- Next, lift one battery, 10s later, upload the battery.

- Long press the last key of the remote control for about 6s until the alarm ring “Bi”.
Finally press the second key once, and the alarm will ring twice “BiBi” which means the pairing is successful.
FREQUENTLY ASKED QUESTIONS
The maximum range of the alarm is 15 meters.
The noise level of the alarm is 113 dB.
Yes, the alarm is waterproof with an IP55 waterproof PC material casing that is suitable for use outside.
The alarm is easy to install and operate using a remote control. The distance for the remote control is up to 20m. There are two installation options: double-sided sticker or straps.
Yes, the alarm can be used for E-bikes, scooters, doors, and windows with adaptable sensitivity with 7 levels.
If you have the original remote control, press the second key of the original remote control once, long press the fourth key of the original remote control, and don’t release, the bicycle alarm will go off a long sound twice. 5s later, there will be a short sound. At this time, release the fourth key of the original remote control, then press the second key of the unpaired remote control once, alarm will ring “Bi Bi” which means the pairing is successful. If you don’t have the original remote control, use a screwdriver and the blue tool to open the alarm, lift one battery, 10s later, upload the battery. Long press the last key of the remote control for about 6s until the alarm ring “Bi”. Finally press the second key once, and the alarm will ring twice “BiBi” which means the pairing is successful.
If you require additional remote controls for a family member or simply as a backup, just add more remote controls to your order.
The Mengshen Bicycle Wireless Anti-Theft Security Alarm uses a wireless sensor to detect the movement of your bike, and when triggered, emits a loud alarm to deter theft.
The alarm emits a sound of up to 113 decibels, which is loud enough to attract attention and deter potential thieves.
The wireless sensor has a range of up to 10 meters.
No, the alarm can only be turned off by entering the correct four-digit code on the keypad.
If the wrong code is entered, the alarm will continue to sound for 30 seconds, and then automatically reset.
The battery can last up to 8 months on standby mode, or up to 4 months with regular use.
Yes, the alarm is waterproof and can be used in all weather conditions.
The alarm is powered by a 9V battery, which is included with the product.
The alarm can be attached to your bike with a bracket and zip ties, which are included with the product.
Yes, the alarm can be used on other items that require anti-theft protection, such as scooters or motorcycles.
VIDEO – PRODUCT UNBOXING
DOWNLOAD THE PDF LINK: Mengshen Bicycle Wireless Anti-Theft Security Alarm User Manual






Finally press the second key once, and the alarm will ring twice “BiBi” which means the pairing is successful.


















