Rear bike light Cycplus L7 with radar sensor, rear safety light, rechargeable

The Cycplus L7 is a rechargeable rear bike light with an integrated millimeter-wave radar sensor that detects approaching vehicles from up to 160 meters. Designed for mounting on a seatpost or saddle rails, the light provides a wide 270° visibility to other road users while the radar system monitors the space behind the cyclist and relays approach warnings to a compatible bike computer or device. Compact and lightweight, the L7 combines lighting modes, detection alerts and energy-efficient operation to support safer commuting and urban riding both day and night.

Advantages

The Cycplus L7 integrates a long-range radar and multiple light modes in a single, weather-resistant unit. Its millimeter-wave radar detects relative vehicle speeds from 6 to 160 km/h and covers a 40° detection angle to reduce blind spots when cornering. With up to 36 hours of operation in radar mode and automatic sleep/wake behaviour, the device balances performance and battery life. Clear LED indicators show battery level and radar status, and ANT+/BLE compatibility enables connection to bike computers and smart devices.

Suitable for

• Daily commuting in urban environments
• Daytime group rides where synchronized flashing is useful
• Evening or night cycling requiring visible rear lighting
• Riders who want real-time rear-approach alerts via a compatible device

Key specifications

• Detection range: up to 160 m
• Detection angle: ±20° horizontal, ±5° vertical (approx. 40° total)
• Detectable relative speed: 6–160 km/h
• Viewing angle (light): 270°
• Battery: 2000 mAh (3.7 V) — up to 25 h bright flashing / up to 36 h radar mode
• Charging: USB-C (5 V, 1 A)
• Connectivity: ANT+ and BLE 5.0
• Weight and dimensions: 67 g; 76.5 × 37 × 25 mm
• Ingress protection: IPX6 (splash and rain resistant)
• Operating temperature range: 0°C to 50°C

How to use

Attach the Cycplus L7 securely to the seatpost or saddle rails using the included mounts, rubber pads and straps. Charge the internal battery via the USB-C cable before first use. Power on the unit and select the desired light mode (Constant, Blinking, Breathing, Radar or Peloton) using the button on the housing or the CYCPLUS app. To receive audible and visual approach alerts, pair the light with an ANT+ or BLE-compatible bike computer or smartwatch following the device pairing instructions.

Usage recommendations

Use radar mode during daytime rides to receive rear-approach warnings and switch to bright blinking modes in low-light conditions for maximum visibility. Regularly check the LED status indicator to monitor battery level and recharge when the indicator shows 30% or less. Ensure mounts are tightened and rubber pads are correctly positioned to maintain a stable fit; the device is IPX6-rated but should be dried after heavy exposure to water.