Bike Alarm Wireless with Horn Function for 31.8mm, 22.2mm Handlebar

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ABOUT US: With a focus on excellence, we are the professionals: We exclusively develop and produce bicycle lights, with a 20-year history in this industry. Our dedicated R&D team and in-house production facility ensure the authenticity of our data. The brightness, weight, size, irradiation angle, and distance details on our product pages are all based on actual measurements, without any false or exaggerated labeling.

All Series High Waterproofness Achieving IP66-level waterproof and dustproof protection, our lights are unafraid of any adverse weather or environment.

Smart Tail Light Brake Warning When the brake is detected, the tail light will automatically increase in brightness to warn the pedestrians behind you.

Smart Tail Light Auto On/Off The smart mode can automatically turn the light on or off, solving the problem of forgetting to turn it off.

Separate Control Helmet Light The headlight and rear light have independent switches, allowing you to control them separately.

Exclusive Swivel Lens Design The anti-glare design can still be achieved even when the light is mounted.

BIKE ALARM WITH HORN FUNCTION Semaho Bike Alarm is also a bike electric horn that emits a loud 80-130dB alarm to alert those around you and improve your riding safety.

WIRELESS REMOTE CONTROL The wireless bicycle alarm comes with a remote control that allows you to set and control the alarm functions, such as ringing the bell, adjusting the volume, and activating the anti-theft mode. The remote control's range can reach up to 165ft, enabling you to carry it with you and enjoy remote control convenience.

ANTI-THEFT FUNCTION You can set the anti-theft mode and release it through the remote control after your ride. Activate the anti-theft mode when you are away from the bike or it is out of sight, and then remove and take the remote control with you - the alarm will sound whenever the bike is moved.

ONE CLICK BIKE FINDER When your bike is parked among many others or you've forgotten where you parked it, you can press the remote control's ringer button to make the bike bell sound, helping you quickly locate your bike.

SWITCHING AND PAIRING METHODS To turn the bike alarm on or off, simply use the touch switch - a long press of 2 seconds will power it on or off. The power-on prompt is two "Didi" sounds, and the power-off prompt is one "Di" sound. To pair the remote control, power on the alarm, click the touch switch, and the alarm will emit a "Di" sound to enter pairing mode. Then, press any button on the remote control to complete the pairing.

EASY TO INSTALL Following the straightforward installation steps, you can have the bike alarm and remote control set up in less than a minute. The alarm is securely screwed in place, so you don't have to worry about it being stolen, and the remote control can be easily installed and removed by simply rotating it 90°.

ADJUSTABLE VOLUME AND 4-SOUND MODES Semaho Bicycle Electric Horn can be adjusted to different usage scenarios by controlling the volume level via the remote control. You can also choose from four different sound modes: normal horn, whistle, alarm, and car horn.

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