The 1.5mm gauge invisible dog fence wire ensures less resistance to the radio signal. Therefore you will have a better zone than you could expect with the industry-standard, 0.75mm containment system wire. This is particularly important with larger properties. In addition to this, the 1.5mm gauge wire, due to its strength, will effectively reduce the chance of wire breakage and signal interference. This wire also has the UV stabilized insulation skin therefore it is suitable for attaching to most existing fences. 1.5mm gauge wire is recommend for property size over 5 acres (approx 600 metres boundary). It can be used for any invisible radio fence systems.