Whelen 4 light dominator Red blue TIR3

Used condition tested and fully working
Red blue split with built in flasher. Includes sync and pattern change wire.
Part #01-0684607-06B
Model #D4RRBB
Mfg date #08/2010
Has a set of 90 degree brackets. Will receive pictured unit. Two available and may not receive exact pictured unit. 
Can change to all red or blue but must specify upon checkout. Replacement heads may be different than pictured and have light yellowing.