Whelen Engineering Epsilon Electronic Siren
For a very economical price you get a quality Whelen siren that has a surprising number of features including nine Scan-Lock tones and even a real time diagnostic indicator. Full featured, self-contained electronic siren. Hands-free operation from the vehicle steering wheel. Compact design, includes noise-cancelling microphone. Scan-Lock siren tone programming with nine tones to choose from. Harmonically rich composite airhorn tones. 7 position rotary switch function selector allows choice of standby for use with the manual button, manual tone 1 & 2.