Feature: 1. ABS Material: Electric fence beeper is made of durable ABS material, resistant to cold weather, small size, light weight, easy to carry. 2. Main Purpose: The exciter (power supply) can accurately detect whether the fence is powered normally. Suitable for farms, home gardens, pets and livestock enclosures. 3. Simple to Use: Used to check the electric fence, put electric fence beeper close to the fence, if the fence is active, it will flash the lights. 4. Applicable Scenes: Electric fence beeper with light are used for many types of electric fences, including steel wire, poly wire tape, etc. 5. Product Size: Electric fence beeper size is about 8x3.5x1.5cm/3.1x1.4x0.6in (without ring). Working distance is about 0.4‑0.5m/15.7x19.7in. Specification: Item Type: Electric Fence Beeper Material: ABS Color: As Pictures Shown Weight: Approx. 25g / 0.9oz Product Size Without Ring: Approx. 8x3.5x1.5cm / 3.1x1.4x0.6in Working Distance: Approx. 0.4-0.5m / 15.7x19.7in Battery: 1 3V CR2032 Button Battery(Delivered Without Battery) Purpose: Test Whether the Electronic Fence Voltage Is Faulty Applications: Farms, Home Gardens, Sheep, Pets, Horses and Livestock Enclosures. Package List: 1 x Electronic Fence Fault Tester1 x Accessory Ring Note: 1. If the light does not flicker, it means that the fence circuit is abnormal.2. It is necessary to remove the screws on the back of the knob before replacing and installing the battery.