‍ Function 1,ABS Material: The electronic fence fault tester adopts ABS material, durable, cold-resistant and easy to carry 2,Accurate Detection: The electronic fence fault tester trigger (power supply) can accurately detect whether the fence is normally powered 3, LOUD BEEP: Add switch button, press the button close to the fence, if the fence is active, there will be a loud beep 4,Lighting Design: When the fence is active, this fence fault finder will flash red lights, simple and easy to use 5,Sleep State: The fence fault finder directly goes to sleep in a dark place or at night without causing harassment Item Type: Electric Fence Beep Material: ABS Type: detection series Purpose: To check if the voltage of the electronic fence is faulty Working distance: 0.4-0.5 meters or 1.31-1.64 feet Size without ring: approx. 8 x 3.5 x 1.5 cm or 3.15 x 1.38 x 0.60 inch Battery (supplied without battery): 3V, CR2032 button cell x 1 Wide applications: used in farms, home gardens, sheep, pets, horses and animal pens Weight: approx. 18g or 0.63oz Package list 1 x Electric Fence Sounder Note 1 . If there is no sound or flashing lights, it means the fence perimeter is wrong 2 . It is necessary to remove the screws on the back of the knob before replacing and installing the batteries