The range of applications in the industrial market segment is so vast that it draws from every point in the BeStar acoustic products spectrum. A popular product range are panel mount buzzers, because they provide constant or pulse tone alerts and can work off of the available power source. Their easy mounting screw system makes fitting easy on sheet metal enclosures. Industrial systems may require indoor and outdoor loud multi-tone sirens for warning if a dangerous system malfunction occurs. Powerful speakers for public address systems, smaller speakers for voice messages and intercoms or access systems are also typical applications in the Industrial Market. Even mobile communications devices offer special heavy duty products, which can handle the rigors of industrial sites.