"The Accessory Beeper lets you know where your dog is and what he's doing when you're hunting. There's no extra box riding under your dog's neck. And there are no connecting wires to bend or break. The small lightweight Accessory Beeper rests on top of the neck and can be used with any brand of electronic collar or most other one-inch wide collar straps. Now with a new improved sound! Beeper can be used stand-alone with its included collar strap or it can be mounted on your Tri-Tronics Remote Trainer strap. This unit can now be remotely activated from any G2 or G3 Field or Pro transmitter (remote activation not available from Sport series transmitters). You choose the sound - single, double, or triple beep, tracking tone, or hawk scream; This allows you to distinguish between multiple dogs running at the same time and makes it easy to follow each dog's performance - when both are out "
