Check the listing for details. Patriot Electric Fence Alert Warning Light Null Null. Color: null, Condition: New. Listed at 58.98 USD. PATRIOT Electric Fence Alert Warning Light Fence alert warning light. Battery operated (included) starts flashing when fence stops. Place on fence, when switch is on, light will activate and flash when no current is detected in fence. Plastic Housed Battery Operated Light. Lets you know from a distance when your fence is not performing. Light flashes if fence voltage is too low or there is a loss of power. Can be seen up to a mile away. Replaceable lithium battery can power up to 5 years on standby or 2 weeks of continuous flashing. The flashing light can be seen up to a mile away. Can be used on poliwire, polirope/braid, politape (1/2" and 1 1/2") and steel/aluminum wire electric fences. About Us We specialize in all types of equestrian equipment and apparel for both the English and Western rider. Shop with us and you will find everything you need for your horse, barn, farm, tack shop and shows - we even have pet, garden & pond products too! Return Policy 30 day returns. Buyer pays for return shipping.