Specification:Item Type: Electric Fence BeeperMaterial: ABSType: Detection SeriesPurpose: Test whether the electronic fence voltage is faultyWorking Distance: 0.4-0.5 Meters / 1.31-1.64ftSize Without : Approx. 8 x 3.5 x 1.5cm / 3.15 x 1.38 x 0.60inBattery (Delivered without battery): 3V, CR2032 Button Battery x 1Wide Applications: Used for farms, home gardens, sheep, pets, horses and livestock enclosuresWeight: Approx. 19g / 0.67ozHow to Use:The working distance is 0.4‑0.5 meters near the fence, after the switch is turned on, if the fence has no fault abnormality, will emit loudly beeping soundPackage List:1 x Electric Fence BeeperNote:1. If there is no sound, means that the fence circuit is abnormal2. Necessary to remove the screws on the back of the knob before replacing and installing the battery