The Sentinel series consists of round 9" lamps that combine high-end product design with top performance lighting. The series includes Sentinel Black, Sentinel Chrome and Sentinel Elite. Black and Chrome are part of the standard range, while the Elite has a higher light performance.

With its 20 highly efficient LEDs, the Sentinel Black achieves 9,529 theoretical lumens (with E-boost) and delivers 1 lux at 742 meters.In addition, the product has a light spread of 52 degrees, which is designed to provide maximum light and is suitable for all types of roads and use. 
Sentinel is E-approved R112, but this does not apply to E-Boost so in order for it to be approved, the E-Boost technology must be switched off so that the brightness is reduced to within the permitted limit.
Supplied with an aluminum mounting bracket, which has been treated with the same satin black powder coating to protect against aesthetic deterioration or corrosion as the product itself.
E-boost for double properties (E-marked and extra strong)
With white or orange position light (selectable)
E-marked ECE R112 (not E-boost) and ECE R7 (white position light) 
707m / 316m at 1 lux (E-boost and E-marked respectively)
Brightness: 9520 lumens / 1904 lumens (E-boost and E-marked respectively)
Power consumption 87W / 17W (E-boost and E-marked respectively)
Includes centered mount with option for side mounting (the latter sold separately)
Computer-optimized heatsinks
Electronic heat monitoring system
"Unbreakable" polycarbonate glass
IP68 (water/dustproof)
Designed and manufactured in England
Light image: Spot
5000K color temperature
Voltage: 10V-32V
LED life: 50,000 hours
5 year warranty
Measure: 
Width: 225 mm
Height: 230 mm
Depth: 90 mm