The Federal Commander Digital system, manufactured by Federal Signal Corporation, offers complete, secure activation and status monitoring of any siren system.

联邦信号公司(Federal Signal corporation)所生产的联邦指挥数字化系统可对任何系统提供完善而可靠的激活和状态监控功能。

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Federal Signal Corporation, founded in 1901, is a leading global designer and manufacturer of products and total solutions serving municipal, governmental, industrial and institutional customers.

美国联邦信号集团，成立于1901年，全球领先的产品设计制造商，主要为市政、工业机构等用户提供先进的产品及问题解决方案。

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