Speedrite Fence Alert

Warning light begins flashing when voltage is too low and is visible up to 1 mile away. Rugged impact and water resistant case. Can be used with any type of electric fence including steel or aluminum wire and on portable poli-products. Works with all energizers. No ground wires or external power sources required. Typical battery life of 5\ years on standby, 2 weeks of continuous flashing. Two pre-set voltage triggers can be selected.