Perimeter Technologies New Dog Fence Collar for Invisible Fence Brand Pet Fencing Systems - Better Than The R21!| Invisible Fence System Frequency| 7k - High
- Works on ICT 700,725,750,775,250,150,100,100A Transmitters.
- NOT Compatible with Invisible Fence 800 Series Transmitters..
- Extremely Small & Lightweight Receiver Weighs in at Only 1.1 Ounces.
- High Correction (for high energy dogs or dogs that may test the fence a lot).