Perimeter Technologies Invisible Fence R21 Replacement Collar 7K – 1 Dog And Free Backup Collar Strap : Extreme Dog Fence : Pet Supplies

ONLY WORKS WITH THE SYSTEMS IDENTIFIED IN THIS LISTING – NONE OTHERSeXtreme Dog Fence Presents the Invisible Fence Compatible Dog Fence Collar 7kHz Model Powered by Perimeter TechnologiesThe Perimeter Technologies electronics in the collar receiver is designed specifically to provide a more cost effective solution to replacing an Invisible Fence collar or adding an additional or more dog to your existing fence.The collar receiver is completely waterproof and submersible up to 10 deep. It only weighs a mere 1.1 oz. making it one of the lightest electric dog fence receivers available. The collar is available in both 7k and 10k frequencies to accommodate either frequency that an Invisible Fence system may be set to function in. Most of the compatible Invisible Fence transmitters will have a toggle or dipswitch set underneath the cover to help you determine which frequency your fence is set to. Please see picture for an example.These collars are proudly manufactured in the USA with a high quality polycarbonate plastic. This makes them more resistant to damage from dogs chewing on them.Your package includes: 1x 7k Collar Receiver w/ Strap 2x Sets of Contacts w/ Comfort Covers 1 shorter 1 longer 2x Sets of Training Covers 1 shorter 1 longer 1x Collar BatteryINVISIBLE FENCE COMPATIBLE – This Collar Will Work with Invisible Fence Inground Fences Prior to the 800 Series Including ICT-700 ICT-725 ICT-750 ICT-775 ICT-150 ICT-250 ICT-100 ICT-75 ICT-50 AT-950 Indoor Transmitter CT-4000NOT COMPATIBLE – These Collars Will NOT Work with Invisible Fence 800 Series Systems or Later Fence Including the Titanium Series. . Will NOT work with Boundaries Plus Fence. Nor Will They Work With the Shields Indoor Avoidance Transmitters