<b>BEFORE YOU PURCHASE - PLEASE READ: THIS COLLAR ONLY WORKS WITH THE SYSTEMS IDENTIFIED IN THIS LISTING - NONE OTHERS</b><br><br><b>eXtreme Dog Fence Presents the Invisible Fence Compatible Dog Fence Collar (7kHz Model) Powered by Perimeter Technologies</b><br><br>The Perimeter Technologies electronics in the collar receiver is designed specifically to provide a more cost effective solution to replacing an Invisible Fence brand collar, or adding an additional (or more) dog to your existing fence.<br><br>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 brand 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.<br><br>These collars are proudly <b>manufactured in the USA</b>, with a high quality polycarbonate plastic. This makes them more resistant to damage from dogs chewing on them.<br><br><b>Your package includes:</b><br> 1x 7k Collar Receiver w/ Strap<br> 2x Sets of Contacts w/ Comfort Covers (1 shorter, 1 longer)<br> 2x Sets of Training Covers (1 shorter, 1 longer)<br> 1x Collar Battery<br><br>INVISIBLE FENCE COMPATIBLE - This Collar Will Work with Invisible Fence Brand 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-4000<br><br>NOT 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