
EDIT: A few weeks after installation the rotary knob/selector stopped working. I discovered this while trying to react to the scene. Watch the attached video. This is something serious that could lead to a very bad outcome. After answering calls with two separate switches for the lights, and then digging up a siren controller, I decided I needed an all-in-one option. This option seemed the most versatile to me, so I went for it. I'm glad I did! The instructions are not very clear, but you can program 6 different siren sounds in addition to the manual buttons. The 6 extra knobs are the best: I have one for the headlights, one for the taillights and another for the headlight. I have 3 left to add more circuits. I installed it in an accessible place and it looks amazing!

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