1. WIDE USE. Match all types of energizers. Can be used on any type of electric fence including steel, wire tape etc.2. . Do not need to touch fence wire. Just PRESS BUTTON and hold it to fence, it will give a loud beep if the fence is active. Working distance about 20cm near fence.3. . on-off button and light. Flash will be useful when in dark or in the . Pocketable design Requires 3 Volt CR2032 button Battery Operation (Not Included)4. LONG LASTING. Simple compact design could avoid falling damage. Made from solid materials with a replaceable battery and keyring attachment.Material: plasticcolour: blackPackage Contents:1 x Electric FenceOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.