Simple and easy to use electric fence tester. Emits a high pitch beep when held near a live wire. Compatible with any fence energizer brand. Conveniently attaches to a key ring for portability. Replaceable long-life battery included. Type: Indicator Dimensions: 3.25 In. W. x 5.5 In. L. x 1.5 In. D. Cord Length: Cordless