PetSafe OEM Probes for RF Receivers and Bark Collars

 This is the standard probe that comes from the factory installed on all collars sold.  It is for dogs with average length hair or coat.  Small probes are used for dogs with very short hair or coat.  Long haired dogs with a thick coat should use the long probes.

Part Number 200-321 Medium Male Probe	Fits these collars
	UL-275V Deluxe Ultralight Receiver. RF-275M Stubborn Dog Receiver. UL-250M Ultralight Receiver. PIF-200M Instant Fence Receiver. PST-100 and PST-105 Little Dog Trainer Receiver. PST-100S and PST-105S Big Dog Trainer Receiver.

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