<b>Wireless Dog Fence</b><br><br>AngelaKerry EF851S is a new generation pet fence system that use GPS position technology, it is more accurate and stable, it can keep the dogs safe in an adjustable area.<br><br><b>Working Principle</b><br><br>The EF851S perfectly solves the inherent defects of the traditional electric fences-unstable signal and inaccurate distance control. Due to the wide coverage and accuracy of the GPS signal, the EF851S is difficult to be interfered by metal and obstacles, it means your dogs will be never mistakenly warned and injured.<br><br><b>Features</b><br><br>Adjustable radius from 20 meters(22YD) to 800 meters(850YD)<br>Covers an circular area from 0.3 acre to 496 acres<br>Rechargeable and waterproof collar with beep/shock<br>Five levels of static correction to match dogs with different sensitivity<br>All functions are integrated in the collar, easy to carry and use<br>For dogs from 15 pounds to 120 pounds<br><br><b>Instructions</b><br><br>You need to identify a central point that will be the center of the play area of your dogs.<br>Take the fence system to the central point and turn it on, then set the radius of the play area and position the fence system. After position successfully, the "00" will stay on, put the collar on your dog.<br>When your dog get to the boundary line, it will beep and shock your dog, then your dog will be back.<br><br><b>Notice</b><br><br>1. Due to the GPS position system, you need to reset it every time you turn on the fence.<br>2. Train your dog for about 3 weeks to let him know how the fence system work.<br>3. Do not use this fence on aggressive dogs, and don't use this fence on dogs for over 12 hours one day.<br>4. We do not recommend using it on rainy days or near tall buildings or inside a house due to the weak GPS signals.<br><br><b>Package Included</b><br><br>1 x Pet Receiver<br>1 x TPU Belt<br>4 x Metal Contact Points<br>1 x LED Test Light<br>1 x 5V Charger<br>1 x USB charging Cable<br>1 x English Manual