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by Federal Signal Corp.
Description:
The 100-watt PA 640 model breaks new ground with full-featured, programmable performance in a mid-range siren. It meets SAE JI949 and Class A, and incorporates auxiliary relay and light controls.
Features include: a four-position slide switch; a five position rotary siren switch with wail, yelp, priority or hi-lo, air horn, and peak-and-hold tones; nine relay-controlled outputs for 80 amp switching capacity; dynamic short circuit protection; and a noise-cancelling microphone.
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