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Used Watchdog Inflatable Blower SirenPick up in Crystal Lake, Illinois 60014 $115 cash and carry.DescriptionBLOWER ACCESSORIESThe Watchdog blower siren is the future for safe operation of inflatable amusement rides. It is amazing that the inflatable industry has gone without any type of device for monitoring inflation for so long.Now, the wait is over. The patented and amazing Safety Air System...