Redline has three sirens. They are not the same product with different names.
Rhythm is the console. Knob on the front, bail bracket, 100 watts, one small auxiliary output. No programming.
Resonance is the handheld. Same 100-watt single-tone power, but lives on a mic clip. Four light outputs. Still no programming.
Hot Zone is the programmable one. 200 watts dual-tone. Handheld or panel. USB-C. You set the tones and the behavior in software.
Let's look at the Rhythm.

Console, knob, done
It mounts with a bail bracket. The control face has a knob for the tone and one master switch. Wail, yelp, hi-lo, phaser. You turn the knob. That's the interface.
The microphone is included. Clip and all. When you need to talk outside the truck, you talk. PA is part of the unit, not an extra.
There's one auxiliary output. 0.2 amps max. You can trigger something small with it. It is not a lighting controller. If you need multiple light outputs, look at Resonance. If you need programmable tones and dual-tone power, look at Hot Zone.
The numbers
100 watts into one 11-ohm speaker. That's the RL-100 if you're building a Redline package. 12 to 24 volts. 10 amps max at 12 volts. 15-amp fuse. Dimensions are 1.97 by 5.51 by 5.04 inches.
Certifications: SAE J1849 EVS1, ECE R10, CISPR 25. Part number RL-RYTH.
Where it fits
It's the one you put in a console or under a dash when you don't need a handheld and you don't need software. One speaker. Knob. Mic. One small aux. That's the whole job.
Speaker is sold separately. Wire it to an 11-ohm 100-watt unit. Read the manual before you pull power.
Learn more and find your Rhythm here.
If the truck needs a handheld instead, look at Resonance. If it needs programmable dual-tone and more control, look at Hot Zone.



