When the system was first installed, the manufacturer, Railroad Controls Limited, told village officials that a regular 80-decibel train horn could be heard in the surrounding 171 acres.

The alarm horn sounder DC voltage range is now extended from 10 to 60VDC, and the AC versions have a universal power supply accepting inputs from 100 to 240VAC.

The cases are slotted for horn or speaker units (STI-1210A-E), while the strobe-only units feature a solid front (STI-1221A-E). Sound and light losses will occur, from 22 to 47 percent depending ...

Livonia-based TRW Automotive Holdings Corp. said Wednesday that it is developing a new electronic horn system, activated by touching a conductive area on the steering wheel airbag cover.