1. WIDELY USED. (1) Pulse Flash Signal Light works with all pulsed energizers. (2) Suitable for any type of electric fence including steel, aluminum wire, ploy wire and tape. Tape up to 40mm wide. More wider range of using. 2. EASY TO USE. (1) Just clip the Fence Indicator onto electric fence. Insert probe into earth, It will flashes with every fence pulse when the fence is working. (2) This voltage indicator use power from fence so no need battery or extra power source. (3) Could be placed anywhere on the fence 3. HUMANIZED DESIGN. (1) Oval outer case design for better ergonomics. (2) Smooth furface will not hurt your fingers. (3) Eco-friendly green colour integrates into external environment. (4) High visibility yellow colour clip with Anti-slip pattern will not slip even in extremely weather. 4. SAVING COST. (1) 3 high bright LED lights inside ensure long life and extra brightness. Visibility up to 100m at night and 20m by day. (2) Sealed weatherproof case is water and UV resistant for durability. (3) Continuous monitoring, no reset required. (4) If voltage below 2000V, the Live Fence Indicator will stop flashing. 5. WARRANTY 6 MONTHS, (1) If Quality Problems, A full refund or a new replacement can be arranged in warranty. (2) Any problem please contact me. Please kindly advise free for your concerns