100 watt amplifier, with LED back-lighting.
Nine Scan-Lock siren tones to choose from: Tone off, Wail, Yelp, Airhorn, Hi/Low, Piercer, Y249, Manual wail coast to stop and Manual wail stop.
Scan-Lock switch is "security" located on the rear to ensure all fleet sirens are set with the same tone sequences.
Rotary switch allows choice of standby for use with the manual button, manual tone 1 & 2.Hands-free position allows horn ring operation of the siren and tone 1, 2 and 3 positions.
Input voltage: 12.8 VDC ±20%, Input current: 8 Amps Max, Input fuse: 10 AMPS, 11 OHMS.