Two Druid dual zone energizers can be controlled and programmed with the optional LED four zone keypad to form a four zone system. The energizers can be installed near the fence and the keypad can be located where it is most convenient for the user. Features: The fence voltage outputs can be adjusted using the keypad The siren and gate outputs can be bypassed using the keypad The four zone keypad can be used with either of these energizer models: D25LCD, D28LCD Can individually control and arm/disarm zones