The New Wireless Dog Fence aka Instant Fence from PetSafe™ (PIF-300) can be installed in an instant -- if you can plug in a cord, you can install this! The Petsafe PIF-300 Wireless Dog Fence is completely portable, you can take it - and your pet - wherever you go: to the beach, to a friend's house, even on vacation! How this Wireless Dog Fence works? Plug in the transmitter somewhere inconspicuously in your home, garage, or tool shed. The Petsafe Instant Fence (PIF-300) uses a constant radio signal to create a "stay zone". If your dog leaves the stay zone, it receives a warning tone first, if he continues, one second later he will get a correction (at the level you initially set the collar for) and if he continues to leave the correction gets progressively stronger until your dog returns. This Petsafe PIF-300 Wireless Dog Fence does have an Automatic Safety Shut Off after 27 seconds. Boundary ranges are set instantly with the dial on the transmitter. With the Petsafe Instant Fence (PIF-300), your pet is safe, and your mind is at ease! Fits dogs 8 lbs and up and at least a 6" neck. Range of the Petsafe Pif-300: Up to 1/2 acre -up to 90 feet radius (in all directions) Ideal for any flat area(sloped yards can affect the range of the transmitter) Features of the Petsafe Pif-300: Plugs into standard 110-volt outlet. Place in the center of your home (like a closet or garage) Wireless: Just plug and play, sets up in minutes. No installation, no burying wire, no stakes. Portable: Can be easily taken to a new home, or while traveling in an RV Lightweight - collar & receiver weigh 2.5 oz You can even add our DC to AC Power Inverter that will allow you to plug the system into the cigarette lighter of your car, boat or RV Petsafe Pif-300 Includes: One waterproof receiver/collar with short contact points One set of two long contact points Transmitter Power adaptor Test light RFA-67D-11 6 V batteries 50 boundary flags for training Operating and training guide Warranty card Transmitter Specs: Height: 9" Width: 9" Depth: 8.5" Frequency: 18 kHz Fuse Type: 250 volt 1/2 amp (inside transmitter) Rounded front, or barrel shaped Light gray front On-Off switch on left Boundary control dial on face High-Low switch on face Power indicator light on face (red) Adapter: Model number: 300-089 (14v A/C 1800 ma) Receiver Collar Specs: Height: 1" Width: 2" Depth: 1" Weight: 2.5 oz Translucent Smoke-colored Case Uses 6-volt (RFA-67) battery Waterproof Low battery indicator (light will flash every 4 to 5 seconds) Interchangeable Contact Points (Long and Short) Screw off cap covering Correction Level Button Concave interior wall (side facing throat) Curved washers 25 second safety timeout Warrant Information All parts are covered under warranty for the life of this product. Labor is covered for the first year of ownership. Thereafter, there is a minimum service charge for the repair or replacement of the product. Misuse, loss, or improper handling is not covered. PetSafe will not pay for loss of time, inconvenience, loss of use of your product, or any incidental or consequential damages.