Trailer Sentry™ Trailer Alarm System

It's your trailer. Make sure it stays that way with Master Lock's Trailer Sentry Trailer Alarm System. By monitoring your trailer's lighting circuitry, this patent-pending system will trigger a remote alarm in the even that your trailer is disconnected from your vehicle or if the wires are cut. This alarm system can work in tandem with any mechanical security device to provide you with yet another level of security, convenience, and peace of mind. 

About Master Lock
The most familiar and trusted name in safekeeping, Master Lock, conjures memories of everything from high school gym to biking across town. And though these may be nostalgic these days, you know that Master Lock is still the name you want on your padlock or other security solution. They are by far the largest manufacturer and distributor of quality security devices, and as they expand, they continue offering innovative products in all fields. Look for Master Lock solutions for your automobile and computer in addition to yard, school and commercial uses.