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DanmarkBBB Cycling Signal Radar BLS-251 Rear Bike Light
BBB Cycling Signal Radar BLS-251 Rear Bike Light
5 reviews
RRP 139,-
94,95
- Ordered before 22:00, delivered tomorrow
- Free tracked delivery
Pros & Cons
Pros & Cons
- The 35 degree angle provides a wide radar zone, and object detection up to 190 metres gives you ample time to react.
- The Signal Radar can be paired with a phone or bike computer using ANT+ or Bluetooth.
- DayFlash mode with an 80 lumen output ensures clear daytime visibility.
- Thanks to the battery runtime of 14 hours, the radar will not soon run out of power and, therefore, is a reliable choice for commuting or long bike rides.
- The Signal Radar can only be attached with an elastic strap, which is a bit more vulnerable than a hard clamping band but ensures that the radar can be used on all bikes.
- Some users may find the sound signals unnecessary.
Specifications
Specifications
| Brand | BBB Cycling | |
| Light Output in Lumen | 80 lumen | |
| USB rechargeable | Yes, USB-C | |
| Compatibility | Bluetooth / ANT+ | |
| Max. battery Life lowest mode | 14 hours | |
| Flashing Mode | Yes | |
| Lateral visibility | Better | |
| Brake light feature | No | |
| Radar feature | Rear light with radar function |
The BBB Cycling Signal Radar (BLS 251) detects objects up to 190 metres away and within a 35 degree angle to give you a good and safe overview of what is happening behind you. The combination of clear alerts via your smartphone or bike computer, and a powerful rear light with multiple modes, ensures a safe bike ride. The built-in speaker allows for standalone use, without additional devices: the radar will beep when traffic is approaching.
Construction and operation
The Signal Radar detects objects up to 190 metres away and within a 35 degree angle. This wide coverage adds noticeably to your on-road perception, and increases alertness. The maximum light output of 80 lumens in DayFlash mode ensures clear visibility in a variety of conditions. The combination of radar and light functions is incorporated in a compact and efficient design aimed at clear signalling.
Functions and controls
ANT+ and Bluetooth connectivity enables pairing with a bike computer or smartphone, allowing alerts to come through quickly. The built-in speaker provides an additional source of feedback when the radar is used without a paired device. The radar has 6 light modes that can be easily selected. The car warning light enhances your visibility in traffic. Thanks to the battery runtime of 14 hours, you can easily use the light and radar for commuting, longer bike rides and holidays.
Battery status indicator
On one side of the Signal Radar BLS-251 there are five white coloured LED lights that accurately display current battery status. A sixth green light indicates whether the speaker is on or muted. This allows you to be always aware of the status of your rear bike light.
The Signal Radar detects objects up to 190 metres away and within a 35 degree angle. This wide coverage adds noticeably to your on-road perception, and increases alertness. The maximum light output of 80 lumens in DayFlash mode ensures clear visibility in a variety of conditions. The combination of radar and light functions is incorporated in a compact and efficient design aimed at clear signalling.
Functions and controls
ANT+ and Bluetooth connectivity enables pairing with a bike computer or smartphone, allowing alerts to come through quickly. The built-in speaker provides an additional source of feedback when the radar is used without a paired device. The radar has 6 light modes that can be easily selected. The car warning light enhances your visibility in traffic. Thanks to the battery runtime of 14 hours, you can easily use the light and radar for commuting, longer bike rides and holidays.
Battery status indicator
On one side of the Signal Radar BLS-251 there are five white coloured LED lights that accurately display current battery status. A sixth green light indicates whether the speaker is on or muted. This allows you to be always aware of the status of your rear bike light.
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Bike Lights: Stay safe and visible on the road [Buyer's Guide]
Read moreReviews
Reviews
Most recent reviews
5 / 5
Goed licht en geeft extra veiligheid door de radar functie
- Arnoud 12 August 2026
Werkt eenvoudig en signaleert achteropkomend verkeer (ook als je parallel opeen fietspad fietst
Pros & Cons
Eenvoudige montage
Geeft lichtsignaal bij achteropkomend verkeer
Geeft ook eventueel geluidssignaal
Koppelt automatisch met mijn bryton
Verschillende lichtinstellingen
5 / 5
Mooi radar licht tegen een aantrekkelijke prijs
- Bart 25 July 2026
Mooi radar licht tegen een aantrekkelijke prijs. Eenvoudig te koppelen. Ook te bedienen met cannondale app.
Pros & Cons
Eenvoudig te koppelen met fietscomputer
Goede kwaliteit
Ondersteuning Bluetooth en ANT+
Prijs, zeker in verhouding met andere merken
5 / 5
You won’t want to go on a bike ride without it!
- Marc 21 July 2026
Commuting between home and work, and gravel rides… safety alerts make you feel much better compared to those reckless motorcyclists who zoom past you at a distance of just 0.5 metres
Pros & Cons
Notifications without the need for a mobile phone or ANT+ devices
Price
Sleek design
Automatic translation
4 / 5
Good device
- Roland 8 March 2026
The BBB radar works very well, the rubber strap well
Automatic translation
5 / 5
Very good site with the material available free 4-day delivery
- Patrick 17 February 2026
The radar is bright several functions but I prefer radar only and it flashes when a car arrives, you can cut if you want the speaker function, for the moment I use it with hspeaker because my meter is not recent enough to integrate the visual, but I lent it and works very well on a recent meter.
Automatic translation
5
Marc, 21 July 2026
You won’t want to go on a bike ride without it!
Commuting between home and work, and gravel rides… safety alerts make you feel much better compared to those reckless motorcyclists who zoom past you at a distance of just 0.5 metres
-
Notifications without the need for a mobile phone or ANT+ devices
-
Price
-
Sleek design
Automatic translation
5
Patrick, 17 February 2026
Very good site with the material available free 4-day delivery
The radar is bright several functions but I prefer radar only and it flashes when a car arrives, you can cut if you want the speaker function, for the moment I use it with hspeaker because my meter is not recent enough to integrate the visual, but I lent it and works very well on a recent meter.
Automatic translation
Frequently bought together
Frequently bought together
BBB Cycling Frontlight NanoStrike 1000i BLS-263i
RRP 74,95
From 54,95
Recommended by the product specialist
Recommended by the product specialist
Related products
Related products
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| BBB Cycling Signal Radar BLS-251 | Trek CarBack Radar | IGPSPORT Radar SR mini | Magicshine SEEMEE R300 | |
| 5 reviews | 7 reviews | |||
| Light Output in Lumen | 80 lumen | Being seen in urban environment: 0 - 100 lumen | Being seen in urban environment: 0 - 100 lumen | Being seen in limited lighted environment: 100 - 400 lumen |
| USB rechargeable | Yes, USB-C | Yes, USB-C | Yes, USB-C | Yes, USB-C |
| Compatibility | Bluetooth / ANT+ | Bluetooth / ANT+ | None | |
| Max. battery Life lowest mode | 14 hours | 7 hours | 50 hours | 100 hours |
| Flashing Mode | Yes | Yes | Yes | Yes |
| Lateral visibility | Better | Good | Better | Better |
| 94,95 | 119,95 | 84,95 | 89,95 | |
| This product | View product | View product | View product |
All specifications
General
Brand
BBB Cycling
Compatibility
Bluetooth / ANT+
Lateral visibility
Better
Radar feature
Rear light with radar function
Camera function
No camera function
Mounting location
Seatpost
Light Type
Detachable light
Mount(s)
Elastic Band / Strap
Power supply
USB rechargeable
Yes, USB-C
Max. battery Life lowest mode
14 hours
Power Source
Internal Battery
Connectivity
Connector plug
USB-C
Functions
Flashing Mode
Yes
Brake light feature
No
Daytime running lights
Yes
Number of Modes
6
Smart Bike Light
Yes
Lighting
Light Output in Lumen
80 lumen
Water resistance
IPX4: protected against splashing water
Amount of lumen
80