Pet Fence Pros New Dog Combo Pack for Invisible Fence Brand Dog Fence Systems| Invisible Fence System Frequency| 10k You Choose the Correction Level! 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 Energetic Dogs or Dogs that may test the fence often)