Features: Easy and quick measurement: the fence tester allows easy and quick measurement of the voltage of your fence without the need for grounding with cable. Clear display: the voltage is displayed via 8 LED Light. A green LED indicates sufficient voltages from 2000 V to 12000V. Integrated battery indicator: a additional LED indicates the battery condition so you knowing when the battery needs to be replaced. Ready to use: current tester need a 9V battery(NOT Include) that needs to be connecting before first use, so you can start measuring immediately. Ergonomic: the housing of the fence tester is ergonomically, which ensures easy handling and long service life. Specifications: Material: Plastic Size: About. 16.5x2.5x6cm/6.50x0.98x2.36in Package Includes: 1pc Fence Tester(Battery NOT Include) note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.