Warning light begins flashing when voltage is too low. Visible up to 1 mile away. Rugged impact and water-resistant case. Can be
used on 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 5 years on standby or up to 2 weeks of continuous flashing.
Two preset voltage triggers can be selected. Replaceable CR2032 lithium button cell battery.