1.The tester can only be used to test standard duty, low impedance electric fences 2.Test voltage levels on your fence line and fence controller,finding fence faults 3.Neon lamps indicates voltage levels from 0. 6kv to 7kv (600 volts to 7000 volts) 4.Keep one on hand for regular fence line maintenancefence tester can be matched to any animal control situation, offering both budget and design flexibility 5.This package does not need to add batteries.Due to new rules of China Post Air, parcels must not include batteries, otherwise it not get through the custom. 6.The tester uses lamps to indicate voltage produced on a fence line or by a fence controller.It is designed for a low impedance and standard duty fence controllers. Colour:red Material:plastic Package Contents: 1 x Voltage Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.