Extra collar receiver for the SDF-100 in ground fence system. Required when adding additional dogs the the SDF-100 in ground fence system. SportDog SDR-Beep Extra Training/Beeper Collar Features: Original Collar Receiver/Remote Beeper for the UplandHunter SD-1850 Both the Collar Receiver and Remote Beeper are compatible with SportDOG SD-1800, SD-1850, SD-2000, SD-2500 and SD-3000 Remote Transmitters Modular design allows use of Collar Receiver and Remote Beeper together or separately Waterproof Collar Receiver and Remote Beeper Collar Receiver uses replaceable, rechargeable NiMH battery Beeper uses disposable CR123A battery Lifetime Limited Warranty Beeper Tones: Low Volume Hawk High Volume Hawk Bobwhite Quail Call Triple Beep Low Volume Beep High Volume Beep Double High Volume Beep High Falling to Low Volume Double High Falling to Low Volume This unit can be used with any SportDOG FieldTrainer, SportHunter 1800, WetlandHunter, and ProHunter transmitters.

This unit can be used with any SportDOG FieldTrainer, SportHunter 1800, WetlandHunter, and ProHunter transmitters.