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Helps me stay visible when I'm on an actual street with cars. I just feel safer with this on my bike. - Deanna R. USA

Sentinel - Tail Light Alarm

Sentinel - Tail Light Alarm

Regular price $59.98
Regular price $79.98 Sale price $59.98
Sale Sold out

5-in-1 bike alarm / taillight / horn / turn signal / break light

• Protect your bike & improve your safety on the road

Buy 2, get FREE shipping

Deter Thieves and Protect Your Bike

Your bike not just a mode of transportation - it's a trusted companion that takes you on thrilling adventures and brings a sense of freedom.

Now, you can park your bike with confidence. The 110 dB alarm will deter potential thieves, providing an added layer of security and peace of mind.

Be Visible, Be Seen

With its powerful taillight function you can be seen by other road users up to 150 ft away in low light conditions and at night. Stay safe and make sure you're seen, reducing the risk of accidents and collisions.

Clear and Intuitive Turn Signals

Communicate your intentions effortlessly with our integrated left and right turn signals. Alert motorists and pedestrians to your next move, allowing them to react accordingly and enhancing overall road safety.

Versatile Lighting Modes for Every Situation

Sentinel offers six different light modes to suit your specific needs. Whether you're riding in heavy traffic, on a dark road, or need to grab attention in an emergency, you'll have the perfect lighting mode at your fingertips.

Effortless Installation and Operation

We understand that convenience is key, which is why our device is designed for easy installation and operation. Attach it to your bike in minutes and navigate the intuitive control buttons effortlessly, so you can focus on what really matters—your ride.

Package Contains:

(1) x Alarm
(1) x Tail Light Mount
(1) x Wireless Remote
(1) x Remote Mount
(1) x Charging Cable
(1) x User Manual

30-Day Warranty

Our products arrive with an ironclad 30-day warranty. If defective, or damaged during delivery, we replace them for FREE. We guarantee for the quality of our product.

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Customer Reviews

Based on 117 reviews
Nicolette Roob

Actually much better then I thought. works as described, super happy with the quality and all the features.

Trystan Crist

Love: 1. Nice bright light. 2. Brake sensing works perfectly. 3. lets you leave it on, simply arming and disarming, and the lights reactivate with motion.

Like: Having a horn. It's a harsh beep that people don't recognize from bikes around here - we use bells. The loud screech of a beep will get someone's attention but may startle them and they may not know it's a bike at first. Use, "On your left!"

Donna Maggio

What a great tail light for your bike. It has a cool control pad that you mount to your handle bars.There are 5 alarm, the brake light, a center horn, left turn and right turn.It comes with everything you need as you can see in Picture 1. It includes a charging cable, a mounting bracket for your seat stem, the brake light, a mounting bracket for your handlebars, the control panel with a bag of hex bolts, nuts, hex wrench and a tether for the control panel.I first charged it using the USB cable. It took a couple of hours. A full charge is indicated by the left signal light. I connected the mounting bracket to my handlebar for the control panel. The one issue that I had was that the nut that is inserted into the cutout in the bracket was spinning as I screwed in the Hex bolt. It was flush and had a bit a play which caused the nut to spin when I was bolting it down. I then mounted the mounting bracket on the seat post. Its very straight forward. Make sure to use the rubber pads so that the mounting brackets lock down. That's it.

Deanna Roberts

I recently started riding a bike. The bike is somewhat heavy and I felt a little uncomfortable with using hand signals. I love the turn signals on this device. I put the turn signal on and then I use the hand signal just for a moment. I travel mostly multi-mobile paths in my golf cart community, but sometimes need to get on the actual street with cars. I love the rear blinking light along with my flashing front and rear lights. I just feel safer with this on my bike.

Taya Herzog

I got this relatively huge LED rear light for my wifey's 2020 Marlin 6 MTB and she likes it because it's big and bright, the light comes with multiple blinking modes, and the remote controller is easy to use and operate. Due to the big battery inside as well as its bulk, it's quite a bit heavier than regular LED lights for bikes. But the long battery life makes up for it.Although the electronic horn is very loud and gets people's attention quickly, she avoids using it because it's too loud and she doesn't want to come off as being obnoxious.