The RF-1010 Transmitter will work with any PetSafe or Guardian Underground fence collar including the UL-275, the PUL-275, the large or stubborn dog collar and all of the PetSafe Comfort fit collars. As of right now, PetSafe is marketing this transmitter with the Standard/Premium System and the Stubborn Dog system with a working range of 10 acres. However it will produce a signal for up to 4,000 feet of wire which will cover 25 acres.
The part number for this dog fence transmitter (found on the back) is RF-1010.
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