ETL-listed for commercial and hobby applications, the Blueprint Controllers® Digital Cycle Timer BCT-2 offers simple and precise control of two pumps, fans, CO2 regulators or generators, or other 120-volt devices on repeating on/off cycles. On and off cycles adjust from zero seconds to 96 hours, while a built-in photocell allows separate day and night cycle settings. The BCT-2 features a digital display with lithium battery backup in case of power loss. Includes hardware for wall or tent mounting. Three-year warranty; maximum load is 14.5 amps.