PetSafe - PUL-275 - Wireless Collar Extra Receiver for Underground (In-Ground) Fence PetSafe - PUL-275 PUL-275 Extra receiver is compatible with PetSafe underground fences: PIG00-10773, PIG00-10777, PIG00-13661, PIG00-14582, PIG00-11007 and PIRF-100. Use with dog that are 8 pounds and up. Receiver has 4 adjustable levels of static correction and tone-only mode that alerts you pet with a beep.