A: Thank you for this question, Steve! You can add as many compatible collars to this system as needed. Prices may vary for additional collars purchased separately; examples of these can be seen here- https://www.tractorsupply.com/tsc/product/petsafe-free-to-roam-wireless-fence-receiver-collar-1258727 https://www.tractorsupply.com/tsc/product/petsafe-stubborn-dog-stay--play-wireless-fence-receiver-collar-1052855 https://www.tractorsupply.com/tsc/product/petsafe-stay--play-wireless-fence-receiver-collar-1016176 https://www.tractorsupply.com/tsc/product/petsafe-wireless-pet-containment-system-receiver-collar-3691054 If you are looking at collars at your local Tractor Supply, you want to check the packaging to be sure the collar you are considering is compatible, as some of our in-ground collars look incredibly similar to our wireless ones. Wireless collars will have a blue circle on the package with a “wi-fi” style symbol in it, or a blue circle with a house with “wi-fi” marks around it, while collars for our in ground systems will have a red circle with a digging man, or a blue circle with a house and a dotted perimeter around it.

A: Hello Mary Jo! Thank you for your question. The PetSafe Stay and Play Wireless Fence creates a circular boundary that covers up to 3/4 acre (5-105 ft in all directions).

A: Hello Andrew. Thank you for your questions. The Stay & Play Wireless will correct the pet for up to 20 seconds once the boudary is crossed if they do not return, then it will stop.

A: Thank you for your question, Bumber! It is important to note that wireless receiver collars are designed to activate specifically when they lose the signal from the transmitter. Power loss for the transmitter creates an abrupt reduction of the signal field. Since the collar is unaware that the transmitter has lost power, it will then begin to activate because it thinks it is outside of the boundary zone. Due to this, you may want to consider using an Uninterruptible Power Supply (UPS) with your wireless fence if you regularly experience power outages. Uninterruptible Power Supplies (UPS) can be found at your local home and hardware stores. While results will vary depending on the UPS manufacturer’s specifications; the following are typical examples to guide your choice of a UPS: - Using a 400 VA UPS, you should expect at least 1 hour of backup time. - Using a 900 VA UPS, you should expect at least 4 hours of backup time.

A: To better answer your questions please get in touch with our Customer Care team here- https://support.petsafe.net/ Our phone hours are Monday through Friday 8 A.M.- 7 P.M. EST, and our chat hours are Monday through Saturday 9 A.M. – 9 P.M. EST.

A: Hi David, Per the vendor: We typically do not recommend placing the fence transmitter near anything metal in general. Metal objects can interfere with signal transmission and can cause all sorts of issues. It's best to keep the transmitter at least 5 feet away from large metal objects in general.

A: Hello! Thank you for your question! The Stay & Play Wireless Fence covers up to 3/4 acre. If you are looking to go bigger, it's not capable of anything larger. You can look at the Guardian GPS fence which is a more customizable option and can do 3/4 acres and up. sku # 2350830 (Manufacturer part number PIF00-17778)

A: Hello! Thank you for your question. The PetSafe Stay & Play Wireless Fence creates a dome from the unit, the collar will not have an issue receiving the signal in these conditions.

A: Hello! Thank you for your question. The PetSafe Stay & Play Wireless Fence contains one collar receiver. For the second dog you would also need the Stay & Play Wireless Fence Replaceable Battery Receiver Collar (PIF00-15002).

A: Hello! Thank you for your question. The PetSafe In-Ground fences work on a different frequency and therefor will not work with the PetSafe Wireless Fence systems.