Challenge Electronics voice devices are widely used in many world leading manufacturers in the fields of security, agriculture, medical treatment and shipping. Applications ranging from mobile scanners to heavy equipment, and customers and their requirements are unique. The key to meeting these challenges is to work with suppliers with highly specialized engineering design capabilities and manufacturing technologies. Challenge Electronics is a global leader in piezoelectric alarms, acoustic transducers, speakers, buzzer and microphones. They provide the best audio solutions - smaller, louder, more reliable, more energy efficient, and / or more cost effective.