Keep your poultry from roaming with the Fi-Shock Flock-Shock Poultry High / Low Energizer. This unit features two separate power output terminals, one for high voltage and one for low voltage. This allows for varying continuous currents to be used for large adult birds as opposed to smaller birds and chicks. The energizer is also designed to supply enough current to charge up to 1 mile of single strand fence under ideal conditions. Keep your livestock investment safe with the Flock-Shock Poultry High / Low Energizer. This energizer accepts 20 to 9 gauge fence wire. Made in the USA. Limited one year warranty.