New back-up alarm system for trailers unveiled

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WOODRIDGE, Ill. – Hendrickson has introduced a new automatic trailer back-up alarm system.

The audible alarm system can be installed on new trailers by manufacturers, or it can be purchased aftermarket for retrofitting.

The system activities with reward trailer movement, producing a loud warning sound to alert bystanders and other drivers.

A wheel-end direction sensor reads the ABS ring tone and activities the alarm, a 97-decibel repeating pound pulse, after one-half of a reverse revolution of the tire. The alarm stops two seconds after the trailer stops or immediately upon any forward movement.

The system comes in a kit, which includes a direction sensor, electronic control unit, wiring harness and alarm. The electronic module features an additional output that may be wired for a warning or back up light (not included in the kit).

The system requires no communication with the tractor and features reverse polarity protection and reset fuses.

For information, call 866-Rideair, or visit

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