Chris takes apart a Whelen L21 and shows us High vs Low Dome

Features:
SmartLED beacon design offers 75 SignalAlert flashes per minute standard.
21 Total Scan-Lock alternating and simultaneous flash patterns built-in.
Synchronize with up to 7 more L21 beacons.
Supplied with 6" pigtail.
Choice of high or low polycarbonate dome.
Black polycarbonate base.
Virtually no EMI radiation.
High/Low mode.
Certified SAE Class J845 Class 1 360° (Amber).
50,000 hour rated life.
Voltage: 12 VDC
Current: 1.5 Amps (peak), 0.6 Amps (average).
Combination mounting (pipe/permanent/J-hook).

Optional Brush Guards are available for Low Domes and High Domes.

Whelen 5 Year Warranty

MADE IN THE USA

The use of a magnetic mounted light on the roof of a vehicle in
motion is not recommended, and is at the sole discretion and risk of the user.
Use of a magnetic mount on vehicle in motion will violate warranty.

[LVSWRKINGATNITE]

Would it be brighter with clear LED's and a amber dome?

[aarons]

I got that one I got it from a different site but bright only with 1 led on each side