Thunderbird Line Volt Tester The Thunderbird Line Volt Tester is a simple, cost effective tool designed to quickly check the voltage of electric fence lines and energisers. Capable of reading up to 6,000 volts, it provides a fast and reliable way to monitor fence performance and identify potential issues without the need for batteries. Compact and easy to use, this handy tester is ideal for routine fence maintenance on farms, paddocks, and rural properties, helping ensure your electric fencing system is operating effectively. Features & Benefits Tests electric fence lines and energisers Reads voltages up to 6,000 volts No batteries required Simple, quick, and easy to use Compact and lightweight design Cost effective solution for routine fence testing Ideal for livestock, rural, and agricultural fencing systems