Note: The item is ONLY for 110V, NOT for 220V. Please confirm the voltage of your area before placing an order.DescriptionThis fencing system is among the most reliable, cost-efficient pet containment systems available today. A buried wire transmits a radio signal. When you dog approaches the boundary, the signal causes the dog's collar receiver to deliver a warning beep first. If your dog continues closer to the boundary, the system will issue a mild shock. If your dog continues further, the system will issue stronger shocks until your dog returns to within the boundary your have set up. Your dog will naturally seek to avoid correction, and is content staying within established boundaries.Features- Color: Black. - Material: Plastic. - Size: About 17 * 1 cm/ 6.7 * 0.39 inch(L*W). - For all dogs with update version, and most reliable. - Pulsed Proportional Stimulus, the closer your pet gets to the boundary, the more intense the shock. - Tone Stimulus, a warning tone will be issued first, then a stimulus if your dog continues to move closer to the boundary. - Power Boost Switch, allows the width of the warning are to be adjusted. - Detect Anti-Run Through(Effective distance:5M), the faster your dog is moving, the quicker the higher level of is issued. - Audible Wire Break Alarm, The system's control center has an audible alarm to alert you if it senses a break in the wire or if the boundary system is not functioning correctly. - Visual Wire Break Alarm, The system's control center will light alsoup if it senses a break in the wire. - Quick Disconnet Terminals, quick and secure connection or disconnection of the wire to the control center. - Low Battery Indicator, When the light on the collar is green, it is working properly. Red means time to replace the battery. - The update version, new waterproof funtion, most reliable. - Up to 5000 square meters range. Over 1.2 acre. - Collar Max. Circumference: 58cm.