Check the listing for details. DT Systems BTB-809 Single Beep Baritone Dog Beeper Collar with Remote Control. Color: Orange, Condition: New, Made in Korea, Republic of. Listed at 149.95 USD. D.T. Systems BTB-809 Baritone Beeper Collar with Remote Activation Control - Single Beep. The BTB 809 gives you the ability to keep track of your dog's location when he is out of sight and lets you know when he has gone on point. This allows you to find the dog quickly and prevents you from making the mistake of calling the dog to you when he's on point. The BTB 809 beeper collar is lightweight and built to withstand the rugged conditions and heavy cover dogs often encounter. The use of both the sound booster element and the long duration, double-beep make the BTB 809 collar much easier to hear at long range. (Actual yardage will vary depending upon the relative position of you and your dog and other variables such as cover, wind speed and direction).