Kasco Marine, Inc. offers Control Units that can protect your equipment and your wallet. Available in either 120V or 240V, Kasco Control Units come standard with all Decorative Floating Fountains and are available with Pond Aerators and Water Circulators. These two Control Units are equipped with a 24 hour timer to save you money on your power bill and a GFCI (Ground Fault Circuit Interrupter) to protect the equipment and you.